Outboard Motor Knocking Noise

Noise is heard only at idle RPM. There are four major causes of engine knock including engine overheating, ignition timing that is overly advanced, accumulation of carbon in the combustion cylinders or chamber and the usage of lower octane fuel, which is not in line with what is recommended for you. I would start by checking all plugs for spark to make sure you dont have a dead cylinder. When we bought it, we had to make the maintenance on it. If the shaft runs true it's probably in prop or ropecutter. Give the oil a couple of hours to work its way past the piston rings and try again. After realizing where the noise comes from we will show. Topic: Knocking Mercury 90 4 stroke. This is a great option for drivers who’ve been having problems with engine noise, as it cuts down on ticks and knocking in higher-mileage vehicles (so long as they aren’t being caused by some. Any ideas? When running at higer speeds. Who's there? It's your engine, letting you know there's a problem somewhere under the hood. Maintenance has always been done by Yamaha recommendations. Referring to FIG. The water muffles the sound so there is technically no other muffler. 2008 F-150 4stroke Knocking noise. Best, Charlie. Knocking issue. Prop spec: Mercury Enertia 48-898992 16P. You could have blown a piston. With a jet outboard, there is nothing preventing the engine from achieving peak RPM UNLESS the bearings in the jet pump are totally FUBAR’d…. I have a 175 Tracker with console steering, and can't remember what the bar. Many of those older models are in the ha nds of recent new owners who were not into boating when the. When an engine is close to seizing up, one may hear loud knocking sounds without any metallic pinging. 92 after rebate ) 115 HP Outboard Motor Cart Engine Stand (813709012485 Vehicles & Parts). It goes away above 2000 rpm. Re: Outboard Knocking Noise Check your timing, I had a 97 model Ocean Pro from new until a couple of months ago, great motor. During testing it was impossible to get sound readings due to 30+ mph winds masking the engine sounds at all speeds. Bad emissions; Bad Fuel Consumption; Clogged fuel injectors diagnostics. DF250 Rattle/Clunk Noise. If the motor only makes this noise when you are shifting into or out of neutral, drive it til it breaks. Who's there? It's your engine, letting you know there's a problem somewhere under the hood. It's a direct injected outboard motor with a voice so pleasant I could listen to it all day long. An outboard motor noise often comes from the housing of the engine. At approx 1500-2000 RPM sound disapears. In neutral runs good at all rpms. Hello everyone, new to the forum. Motor Noise Outboard Knocking. For the purpose of 2 stroke engine troubleshooting, we are going to keep the plug inspection simple. Turn the bolt in a clockwise direction to free the engine. At this moment, we noticed that the piston of the middle cylinder was overheating due to an oil injection failure. To this bolt, attach a socket fitted onto a l ong-handled breaker bar. After realizing where the noise comes from we will show. There also seems to be a knocking/slapping noise at the to Use this oil in our motor home, three cars, it's just awesome! We live in Anchorage, Alaska, and the cold winter. Prop spec: Mercury Enertia 48-898992 16P. After tearing it all apart, it turned out to be a bad exhaust gasket. You might have experienced it—one minute your outboard motor is working fine, then all of a sudden it begins to make a knocking or rattling sound emanating from the motor. However, a properly maintained outboard engine can last more than 4,000 hours! This means that your engine could last for 16-21 years before needing to be replaced. ) the second part to a. About Outboard Knocking Noise Motor. Maintenance has always been done by Yamaha recommendations. Im also not hearing a loud knocking noise. What is your guessWill it hurt the engine to run it. Outboard Knocking sound. Outboard motor knocking noise. I never heard the noise myself, so I assumed I had at least one bad hole or a bad crank. About knocking motor Outboard noise. The engine doesn't have to be in gear for noise. If the shaft runs true it's probably in prop or ropecutter. It goes away above 2000 rpm. Attaching outboard motor mount / swim ladder. Ok, so you have the spark plug out of the motor, if the business end of the spark plug is completely caked with black crud, do yourself a favor and get a new spark plug right away. Noise is heard only at idle RPM. Bagger's on the right track. it basically means the motor is about to blow up or potentially could. Went fishing today. For the purpose of 2 stroke engine troubleshooting, we are going to keep the plug inspection simple. It goes away above 2000 rpm. My 2014 yamaha four stroke engine has a knocking noise which speeds up and slows down with the engine rpm. An outboard motor is a propulsion system for boats, consisting of a self-contained unit that includes engine, gearbox and propeller or jet drive, designed to be affixed to the outside of the transom. That leaves lots of drivetrain possibilities; hopefully the cure is just replacing one or a few parts. Jun 20, 2011 #4. This happens every time I have low RPSs and in gear. 01-04-2016, 01:54 PM. My son has a 2003 Yamaha 70b 2-cycle outboard motor. You could have blown a piston. Using a high-density cushion material like. 11-28-2015, 06:49 AM. 1 – Outboard Noise Reduction Outboard Motor Noise Reduction. Among the solutions include: Line the inner side of the engine box. Hi everyone, When running a boat at high speeds >3000 RPM and going to idle RPM (in gear) i hear some strange (knocking) noise. I have a 1998 150 HP Mercury SW series. I have noticed lately that when I go to raise the motor after it has been stored in the down position, it makes a creeking, popping noise while on the trim tabs. 2007 df175 750hrs motor ran great for about 4 hours out on the water. 92 after rebate ) 115 HP Outboard Motor Cart Engine Stand (813709012485 Vehicles & Parts). However, a properly maintained outboard engine can last more than 4,000 hours! This means that your engine could last for 16-21 years before needing to be replaced. View online (82 pages) or download PDF (3 MB) Yamaha V150 User manual • V150 Engine PDF manual download and more Yamaha online manuals. You could have blown a piston. Knock Knock. During testing it was impossible to get sound readings due to 30+ mph winds masking the engine sounds at all speeds. Thread starter It does however appear to be hollow in that area from the sound of a knock. Curing 2-cycle Engine Problems: Many 2-cycle engines have problems and are sent to the junk yard before their time. Check lower unit oil and no metal. 1 – Outboard Noise Reduction Outboard Motor Noise Reduction. 2008 F-150 4stroke Knocking noise. About Knocking Noise Motor Outboard. It sounds like it is knocking or if something is rattling under the cowling. First, you are burning more fuel so complete combustion takes longer. Give the oil a couple of hours to work its way past the piston rings and try again. If the engine starts briefly and then quickly dies, you probably have a fuel delivery problem. fuels required and around 10 years for oils, that may sound like a strange question. Many of those older models are in the ha nds of recent new owners who were not into boating when the. 92 after rebate ) 115 HP Outboard Motor Cart Engine Stand (813709012485 Vehicles & Parts). About Outboard Knocking Noise Motor. If you cannot get the engine to turn, apply penetrating oil to the walls of each cylinder through the spark plug wells. Such a sound can take a toll on your boat performance, and not to mention a little bit annoying. Once I get going at a steady rate of speed it stops beeping, blinking and the light even goes off. There also seems to be a knocking/slapping noise at the to Use this oil in our motor home, three cars, it's just awesome! We live in Anchorage, Alaska, and the cold winter. If a little moisture gets in the housing and rusts up the brushes and brush holders, or the brushes are nearly worn out, gently rapping on the starter housing can sometimes free them up, letting them make enough contact to make the starter work. 06-26-2016, 10:51 PM. Methodically check everything, part by part from bottom to top, starting with the prop. Mar 7, 2018. If the engine starts briefly and then quickly dies, you probably have a fuel delivery problem. On start up to head in could here and feel a clunking noise. If all have spark, and you have access to a compression. Re: outboard engine knock I bought a parts motor with a "knock" for $100 last winter. When an engine is close to seizing up, one may hear loud knocking sounds without any metallic pinging. Even with the motor in the water, I could hear a little clunk/rattle noise. 01-04-2016, 01:54 PM. It's a direct injected outboard motor with a voice so pleasant I could listen to it all day long. Motor Noise Outboard Knocking. My son has a 2003 Yamaha 70b 2-cycle outboard motor. shaft knuckles r we talking inboard outboard set up no this is outboard motor so no shaft knuckles its plain simple when the knock happens it wont go away so its the gears but if it goes away after a while as rpm increases its the plates on the impeller fitted wrong way replace it and no sound or knocking sometimes after you drive the motor in sand and if your engines takes it sand and the impeller rubber grinds this sands onto the plates creating a seam and if this happens you will still. We passed this information on to Honda NZ. When we bought it, we had to make the maintenance on it. This happens every time I have low RPSs and in gear. So when I got home, hooked it up to the hose and just. However, when I slow down from from 3500rpms plus, down to a halt or 1000 rpms, that there is a knocking sound, almost like a piston is not g. At approx 1500-2000 RPM sound disapears. How Engine Knock Happens. Recently, it has been running rough at idle and in neutral. Methodically check everything, part by part from bottom to top, starting with the prop. The sounds may go away after a short while, once your oil has a chance to circulate through the engine components and lubricate them. Now I find out that original Honda gears in Sweden are £200 each! £400 for parts and a few hours putting it back together. Fill the cylinders with engine oil and let it sit for a few days. About knocking motor Outboard noise. That leaves lots of drivetrain possibilities; hopefully the cure is just replacing one or a few parts. 92 after rebate ) 115 HP Outboard Motor Cart Engine Stand (813709012485 Vehicles & Parts). I called my dealer and they say this is normal when coming out of a high speed. The vehicle was my daughters and then I got it from her. Yesterday as I'm coming in from a day out the motor began making a knocking noise. 92 after rebate ) 115 HP Outboard Motor Cart Engine Stand (813709012485 Vehicles & Parts). Using a high-density cushion material like. 3) Low Oil or Oil Pressure. Thread starter It does however appear to be hollow in that area from the sound of a knock. at which point I’d like to think the owner of the boat would have been hearing a lot of noise LONG BEFORE a bearing can become this bad!. Best, Charlie. November 2011 in Boating #1. Outboard motors. However, in deference to all the suggesters, first comes observation, then diagnosis. This video shows live footage of a common knocking rattling noise these V4 OMC outboard motors make. Troubleshooting the alarm system includes making sure the horn associated with the alarm works, making sure the warning light comes on and the horn sounds when the oil level drops below acceptable levels and ensuring the warning sounds if the engine overheats. while i only have two old motors for my tinny both 2 stroke , 1 is a mercury 4hp the other is an older evenrude 5 hp (i got it for free) i looked at some newer motors at last years boat show then tried one on a mates tinny it was a 4hp 4 stroke yamaha and it had an accessories plug for a small powered esky or light or gps any small powered device but the motor was quite at all revs no smoke. Does it in forward and reverse. 1 – Outboard Noise Reduction Outboard Motor Noise Reduction. The water muffles the sound so there is technically no other muffler. I thought from your description that the lower unit was making noise while you were underway. My 1995 Mercury 115hp outboard, starts and runs just fine. It's a direct injected outboard motor with a voice so pleasant I could listen to it all day long. Gender: October 18, 2009, 07:06:17 PM. If the motor only makes a grinding noise from forward to reverse, drive the boat. It was a fresh rebuild when he purchased it. With a jet outboard, there is nothing preventing the engine from achieving peak RPM UNLESS the bearings in the jet pump are totally FUBAR’d…. We have a 2000 Mariner engine 90hp 2 stroke 3cyl, autolub, which has a knocking noise. Give the oil a couple of hours to work its way past the piston rings and try again. 2 x 4 blade and 2 x 3 blade. My 2014 yamaha four stroke engine has a knocking noise which speeds up and slows down with the engine rpm. Fill the cylinders with engine oil and let it sit for a few days. I thought from your description that the lower unit was making noise while you were underway. A knock sensor detects engine knock in the motor(aka pinging, detonation, or uncontrolled explosions. Motor is a 2005 Suzuki DF250 4 Stroke, has always run real good. OB Outboard Mechanics--150 HP Mercury noises--fixed with new update Postedby Motorboaton 6/5/12 at 10:36 am. It's a direct injected outboard motor with a voice so pleasant I could listen to it all day long. I never had any issues with my etec in that area but perhaps some peoples noses are a little more sensitive. Less vibration: Stratified combustion for incredibly smooth low-end performance. The new etecs are as good or very close to the 4 strokes in terms of smoke/fumes. An outboard motor is a propulsion system for boats, consisting of a self-contained unit that includes engine, gearbox and propeller or jet drive, designed to be affixed to the outside of the transom. I would start by checking all plugs for spark to make sure you dont have a dead cylinder. In other words, even though the noise comes from a radio speaker, it may be. Oil level is fine now but car continues to make this clicking/ticking noise at idle. Get it back home and put it on the hose. If the motor only makes this noise when you are shifting into or out of neutral, drive it til it breaks. I have a 1998 150 HP Mercury SW series. When an engine is close to seizing up, one may hear loud knocking sounds without any metallic pinging. Outboard motors. Any ideas? When running at higer speeds. while i only have two old motors for my tinny both 2 stroke , 1 is a mercury 4hp the other is an older evenrude 5 hp (i got it for free) i looked at some newer motors at last years boat show then tried one on a mates tinny it was a 4hp 4 stroke yamaha and it had an accessories plug for a small powered esky or light or gps any small powered device but the motor was quite at all revs no smoke. at which point I’d like to think the owner of the boat would have been hearing a lot of noise LONG BEFORE a bearing can become this bad!. I have a 2006 Yamaha 115 2 stroke with power tilt and trim. Jul 29, 2012 · I have a Mariner 15 hp 2001 outboard motor that starts but dies after a few seconds. Hi everyone, When running a boat at high speeds >3000 RPM and going to idle RPM (in gear) i hear some strange (knocking) noise. Prop spec: Mercury Enertia 48-898992 16P. That said, the engines tonal qualities and loudness were impressive. June 13, 2019. Engine does not want to start. Curing 2-cycle Engine Problems: Many 2-cycle engines have problems and are sent to the junk yard before their time. Re: Outboard Knocking Noise Check your timing, I had a 97 model Ocean Pro from new until a couple of months ago, great motor. Engine hasn’t overheated, no kind of smoke coming from tail pipes and it doesn’t die. I thought from your description that the lower unit was making noise while you were underway. This happens every time I have low RPSs and in gear. Outboard motor knocking noise. There are two reasons for this. This video shows live footage of a common knocking rattling noise these V4 OMC outboard motors make. Motor is a 2005 Suzuki DF250 4 Stroke, has always run real good. However, a properly maintained outboard engine can last more than 4,000 hours! This means that your engine could last for 16-21 years before needing to be replaced. If the motor only makes a grinding noise from forward to reverse, drive the boat. First, you are burning more fuel so complete combustion takes longer. A knock sensor detects engine knock in the motor(aka pinging, detonation, or uncontrolled explosions. The vehicle was my daughters and then I got it from her. gtrfan101 Posts: 65 Deckhand. At higher engine speeds, larger throttle openings and greater loads than idle, you need ignition advance. In neutral it also runs smooth with no knock. Mar 7, 2018. I have a 1998 150 HP Mercury SW series. Start the engine when cold and let it run at idle for 5 – 10 seconds. Outboard motors. Diagnosing dead or clogged fuel injectors is difficult because it acts the same than a bad coil, dead spark plug, broken spark plug wires and or electrical problem. Knocking issue. During testing it was impossible to get sound readings due to 30+ mph winds masking the engine sounds at all speeds. The Yamaha outboard alarm system can fail just like any other system on your outboard. The sounds may go away after a short while, once your oil has a chance to circulate through the engine components and lubricate them. Bagger's on the right track. Who's there? It's your engine, letting you know there's a problem somewhere under the hood. Prop spec: Mercury Enertia 48-898992 16P. This video shows live footage of a common knocking rattling noise these V4 OMC outboard motors make. 2008 F-150 4stroke Knocking noise. If a little moisture gets in the housing and rusts up the brushes and brush holders, or the brushes are nearly worn out, gently rapping on the starter housing can sometimes free them up, letting them make enough contact to make the starter work. First sorry for my english because I'm French. Among the solutions include: Line the inner side of the engine box. Does it in forward and reverse. If you have an engine that seized from sitting for a long time, pull the spark plugs out of all the cylinders. while i only have two old motors for my tinny both 2 stroke , 1 is a mercury 4hp the other is an older evenrude 5 hp (i got it for free) i looked at some newer motors at last years boat show then tried one on a mates tinny it was a 4hp 4 stroke yamaha and it had an accessories plug for a small powered esky or light or gps any small powered device but the motor was quite at all revs no smoke. WHAT TO CHECK WHEN THE OUTBOARD DOESN’T SOUND LIKE IT WANTS TO START. When an engine is close to seizing up, one may hear loud knocking sounds without any metallic pinging. DF250 Rattle/Clunk Noise. Start the engine when cold and let it run at idle for 5 – 10 seconds. My son has a 2003 Yamaha 70b 2-cycle outboard motor. Outboard motor knocking noise. 92 after rebate ) 115 HP Outboard Motor Cart Engine Stand (813709012485 Vehicles & Parts). Best, Charlie. posted 05-31-2004 07:11 PM ET (US) My brand new outboard makes a weird knocking sound for about 3 seconds when I come from W. I never had any issues with my etec in that area but perhaps some peoples noses are a little more sensitive. Re: Outboard Knocking Noise Check your timing, I had a 97 model Ocean Pro from new until a couple of months ago, great motor. That said, the engines tonal qualities and loudness were impressive. As soon as I bump it up to just over idle, say 1000 RPMs or more, it goes away and sounds and runs smooth. However, in deference to all the suggesters, first comes observation, then diagnosis. How Engine Knock Happens. Not unusual for V-4's in this time frame. 3) Low Oil or Oil Pressure. If the smooth rumble you're used to coming from your engine is replaced with a repetitive tapping or pinging sound that becomes louder and faster as you accelerate, that's a classic sign of engine knock. Outboard motor stalls when accelerating. 3) Low Oil or Oil Pressure. One of my motors just started making a strange rhythmic knocking sound that comes and goes. This will be a repeated knocking sound that gets faster as your engine speed increases. i found that for my boat the 3 blade Mercury Enertia prop in 16 pitch was a real match made in heaven, and with the FloTorq 4 hub the noise was gone completely. However, a properly maintained outboard engine can last more than 4,000 hours! This means that your engine could last for 16-21 years before needing to be replaced. When an engine is close to seizing up, one may hear loud knocking sounds without any metallic pinging. 1 – Outboard Noise Reduction Outboard Motor Noise Reduction. An outboard motor noise often comes from the housing of the engine. When the torque overcomes the spring torque, the disc begins to rotate. Mar 7, 2018. It sounds like it is knocking or if something is rattling under the cowling. What is your guessWill it hurt the engine to run it. If the shaft runs true it's probably in prop or ropecutter. Outboard Knocking sound. Outboard motor knocking noise. Jul 29, 2012 · I have a Mariner 15 hp 2001 outboard motor that starts but dies after a few seconds. This video shows live footage of a common knocking rattling noise these V4 OMC outboard motors make. In realistic terms the sound of the engine played second fiddle to the noise of the water and air rushing by, so it becomes part of the audible atmosphere, rather. Re: Outboard Knocking Noise Check your timing, I had a 97 model Ocean Pro from new until a couple of months ago, great motor. Once I get going at a steady rate of speed it stops beeping, blinking and the light even goes off. An outboard motor noise often comes from the housing of the engine. June 13, 2019. fuels required and around 10 years for oils, that may sound like a strange question. If it moves, you may be able to salvage the engine. Noticed when we got back closer to the ramp that my motor was just different. Prop spec: Mercury Enertia 48-898992 16P. I bought the boat/motor last July. Such a sound can take a toll on your boat performance, and not to mention a little bit annoying. About knocking motor Outboard noise. At higher engine speeds, larger throttle openings and greater loads than idle, you need ignition advance. Now I find out that original Honda gears in Sweden are £200 each! £400 for parts and a few hours putting it back together. Turn the bolt in a clockwise direction to free the engine. Topic: Knocking Mercury 90 4 stroke. At the end of last season I started hearing a knocking sound at idle and during low rpm. When an engine is close to seizing up, one may hear loud knocking sounds without any metallic pinging. It goes away above 2000 rpm. We hung the motor and the motor worked perfectly. However, in deference to all the suggesters, first comes observation, then diagnosis. Went fishing today. My 2014 yamaha four stroke engine has a knocking noise which speeds up and slows down with the engine rpm. There are two reasons for this. Dog synchronize issue? Shift selector alignment issue?. An outboard motor noise often comes from the housing of the engine. After tearing it all apart, it turned out to be a bad exhaust gasket. About knocking motor Outboard noise. You could have blown a piston. For the purpose of 2 stroke engine troubleshooting, we are going to keep the plug inspection simple. It's a direct injected outboard motor with a voice so pleasant I could listen to it all day long. After realizing where the noise comes from we will show. Noise is heard only at idle RPM. If the engine starts briefly and then quickly dies, you probably have a fuel delivery problem. A starter is essentially an electric motor with graphite brushes inside, and over time, they wear out. About knocking motor Outboard noise. Does it in forward and reverse. I bought the boat/motor last July. About Outboard Knocking Noise Motor. Now I find out that original Honda gears in Sweden are £200 each! £400 for parts and a few hours putting it back together. It was a fresh rebuild when he purchased it. Bagger's on the right track. An outboard motor noise often comes from the housing of the engine. Hello everyone, new to the forum. This happened after driving the car with low oil. If you have an engine that seized from sitting for a long time, pull the spark plugs out of all the cylinders. When the torque overcomes the spring torque, the disc begins to rotate. It sounds like it is knocking or if something is rattling under the cowling. Referring to FIG. Thread starter It does however appear to be hollow in that area from the sound of a knock. Nearby lightning strikes also encouraged me to take shelter. posted 05-31-2004 07:11 PM ET (US) My brand new outboard makes a weird knocking sound for about 3 seconds when I come from W. On start up to head in could here and feel a clunking noise. About knocking motor Outboard noise. I have a ticking noise at idle coming from the engine compartment. 1 – Outboard Noise Reduction Outboard Motor Noise Reduction. Get it back home and put it on the hose. I would start by checking all plugs for spark to make sure you dont have a dead cylinder. 2008 F-150 4stroke Knocking noise. There are two reasons for this. My 1995 Mercury 115hp outboard, starts and runs just fine. About Outboard Knocking Noise Motor. The Yamaha outboard alarm system can fail just like any other system on your outboard. I called my dealer and they say this is normal when coming out of a high speed. Some people suggest listening with a hose, whatever works. When we bought it, we had to make the maintenance on it. Answer (1 of 7): Most outboard motors have the exhaust out through the center of the propeller and is thus well underwater. The engine doesn't have to be in gear for noise. If the motor only makes a grinding noise from forward to reverse, drive the boat. Outboard motors. When an engine is close to seizing up, one may hear loud knocking sounds without any metallic pinging. A knock sensor detects engine knock in the motor(aka pinging, detonation, or uncontrolled explosions. 2008 F-150 4stroke Knocking noise. If the engine starts briefly and then quickly dies, you probably have a fuel delivery problem. That said, the engines tonal qualities and loudness were impressive. I have noticed lately that when I go to raise the motor after it has been stored in the down position, it makes a creeking, popping noise while on the trim tabs. So when I got home, hooked it up to the hose and just. This happens every time I have low RPSs and in gear. An outboard motor is a propulsion system for boats, consisting of a self-contained unit that includes engine, gearbox and propeller or jet drive, designed to be affixed to the outside of the transom. 1 – Outboard Noise Reduction Outboard Motor Noise Reduction. First sorry for my english because I'm French. 92 after rebate ) 115 HP Outboard Motor Cart Engine Stand (813709012485 Vehicles & Parts). It's a direct injected outboard motor with a voice so pleasant I could listen to it all day long. shaft knuckles r we talking inboard outboard set up no this is outboard motor so no shaft knuckles its plain simple when the knock happens it wont go away so its the gears but if it goes away after a while as rpm increases its the plates on the impeller fitted wrong way replace it and no sound or knocking sometimes after you drive the motor in sand and if your engines takes it sand and the impeller rubber grinds this sands onto the plates creating a seam and if this happens you will still. Not unusual for V-4's in this time frame. We passed this information on to Honda NZ. Start the engine when cold and let it run at idle for 5 – 10 seconds. When an engine is close to seizing up, one may hear loud knocking sounds without any metallic pinging. 92 after rebate ) 115 HP Outboard Motor Cart Engine Stand (813709012485 Vehicles & Parts). If you have an engine that seized from sitting for a long time, pull the spark plugs out of all the cylinders. Outboard motor stalls when accelerating. That leaves lots of drivetrain possibilities; hopefully the cure is just replacing one or a few parts. Second, the combustion time, as a percentage of the time the piston is at or near top dead center is much longer because of the piston speed. Outboard motor knocking noise. 1 – Outboard Noise Reduction Outboard Motor Noise Reduction. Hi everyone, When running a boat at high speeds >3000 RPM and going to idle RPM (in gear) i hear some strange (knocking) noise. During testing it was impossible to get sound readings due to 30+ mph winds masking the engine sounds at all speeds. Any ideas? When running at higer speeds. Outboard Noise Motor Knocking. My 40 hp 4 stroke mercury is running like a champ, but when I first fire it up and let it idle, I hear what I think is a little knocking coming not from the engine, but from the connectors that the motor slides left and right on. 2008 F-150 4stroke Knocking noise. So when I got home, hooked it up to the hose and just. while i only have two old motors for my tinny both 2 stroke , 1 is a mercury 4hp the other is an older evenrude 5 hp (i got it for free) i looked at some newer motors at last years boat show then tried one on a mates tinny it was a 4hp 4 stroke yamaha and it had an accessories plug for a small powered esky or light or gps any small powered device but the motor was quite at all revs no smoke. Re: outboard engine knock Does this engine knock all of the time , or just on deceleration? If it knock's only on deceleration, and you hit the fuel primer, and the knock goes away, what you are hearing is like a lean fuel knock. If you cannot get the engine to turn, apply penetrating oil to the walls of each cylinder through the spark plug wells. This video shows live footage of a common knocking rattling noise these V4 OMC outboard motors make. When putting in neutral sound disappears also. That said, the engines tonal qualities and loudness were impressive. The sounds may go away after a short while, once your oil has a chance to circulate through the engine components and lubricate them. Some people suggest listening with a hose, whatever works. An outboard motor noise often comes from the housing of the engine. Your outboard engine life expectancy, at minimum, is about 1,500 hours (or, 6-8 years for the average boater). I have a 175 Tracker with console steering, and can't remember what the bar. WHAT TO CHECK WHEN THE OUTBOARD DOESN’T SOUND LIKE IT WANTS TO START. Fortunately, various solutions can help you reduce the knocking noise. 1 – Outboard Noise Reduction Outboard Motor Noise Reduction. That leaves lots of drivetrain possibilities; hopefully the cure is just replacing one or a few parts. The noise was like a hive of bees fanning the colony, just a rhythmic hum and the rushing sound of air being sucked in, to breathe life into the four-chambered heart of the matter. On start up to head in could here and feel a clunking noise. Re: Outboard Knocking Noise Check your timing, I had a 97 model Ocean Pro from new until a couple of months ago, great motor. We passed this information on to Honda NZ. I never heard the noise myself, so I assumed I had at least one bad hole or a bad crank. Outboard motor knocking noise. Motor is a 2005 Suzuki DF250 4 Stroke, has always run real good. No codes and motor seems to be working good. There also seems to be a knocking/slapping noise at the to Use this oil in our motor home, three cars, it's just awesome! We live in Anchorage, Alaska, and the cold winter. Such a sound can take a toll on your boat performance, and not to mention a little bit annoying. We passed this information on to Honda NZ. 92 after rebate ) 115 HP Outboard Motor Cart Engine Stand (813709012485 Vehicles & Parts). The knock sensor will not save an engine from the effects of a serious knock and should not be viewed as a safety valve. Thread starter It does however appear to be hollow in that area from the sound of a knock. I have a 1998 150 HP Mercury SW series. My son has a 2003 Yamaha 70b 2-cycle outboard motor. Outboard motor knocking noise. Same noise and only when put in gear does it make the noise. Who's there? It's your engine, letting you know there's a problem somewhere under the hood. Attaching outboard motor mount / swim ladder. I never had any issues with my etec in that area but perhaps some peoples noses are a little more sensitive. In neutral it also runs smooth with no knock. Intermittent noises are easier to associate with a source, such as an electric seat adjuster or a power-window motor. Re: outboard engine knock Does this engine knock all of the time , or just on deceleration? If it knock's only on deceleration, and you hit the fuel primer, and the knock goes away, what you are hearing is like a lean fuel knock. Outboard Noise Motor Knocking. We sourced a set of mercury test props all with the 'FloTorq 4' hub. Once it gets past the trim tabs and is on the main cylinder it stops making the noise and is smooth. At this moment, we noticed that the piston of the middle cylinder was overheating due to an oil injection failure. When we bought it, we had to make the maintenance on it. If the shaft runs true it's probably in prop or ropecutter. When an engine is close to seizing up, one may hear loud knocking sounds without any metallic pinging. However, in deference to all the suggesters, first comes observation, then diagnosis. An outboard motor noise often comes from the housing of the engine. My 1995 Mercury 115hp outboard, starts and runs just fine. Then, try turning the engine over with a breaker bar. An outboard motor noise often comes from the housing of the engine. My 2014 yamaha four stroke engine has a knocking noise which speeds up and slows down with the engine rpm. The sounds may go away after a short while, once your oil has a chance to circulate through the engine components and lubricate them. The engine doesn't have to be in gear for noise. It was a fresh rebuild when he purchased it. Does it in forward and reverse. Gender: October 18, 2009, 07:06:17 PM. An outboard motor noise often comes from the housing of the engine. I never heard the noise myself, so I assumed I had at least one bad hole or a bad crank. while i only have two old motors for my tinny both 2 stroke , 1 is a mercury 4hp the other is an older evenrude 5 hp (i got it for free) i looked at some newer motors at last years boat show then tried one on a mates tinny it was a 4hp 4 stroke yamaha and it had an accessories plug for a small powered esky or light or gps any small powered device but the motor was quite at all revs no smoke. If I power off the engine and then on sound at idle is completely clean no matter in netutral or not. Curing 2-cycle Engine Problems: Many 2-cycle engines have problems and are sent to the junk yard before their time. However, outboard motors live a long time in recreational use so it’s not unusual to come across 20 or 30 year old engines still doing a good job. DF250 Rattle/Clunk Noise. On start up to head in could here and feel a clunking noise. Since the noise goes away in neutral, it's probably not engine damage. I have been noticing the last few times out, a noise or knocking sound, when I slow down. Check lower unit oil and no metal. OB Outboard Mechanics--150 HP Mercury noises--fixed with new update Postedby Motorboaton 6/5/12 at 10:36 am. There also seems to be a knocking/slapping noise at the to Use this oil in our motor home, three cars, it's just awesome! We live in Anchorage, Alaska, and the cold winter. This video shows live footage of a common knocking rattling noise these V4 OMC outboard motors make. Turn the bolt in a clockwise direction to free the engine. 3) Low Oil or Oil Pressure. You just never know until you tear it down. 11-28-2015, 06:49 AM. Intermittent noises are easier to associate with a source, such as an electric seat adjuster or a power-window motor. Typical problems include hard starting, rough running, a need to adjust the carburetor during use to keep the engine from stalling, a need to rev the engine to keep…. I bought the boat/motor last July. The noise was like a hive of bees fanning the colony, just a rhythmic hum and the rushing sound of air being sucked in, to breathe life into the four-chambered heart of the matter. Outboard motor knocking noise. Any ideas? When running at higer speeds. Attaching outboard motor mount / swim ladder. My 2014 yamaha four stroke engine has a knocking noise which speeds up and slows down with the engine rpm. So I am thinking it is not related to prop or lower end. Many of those older models are in the ha nds of recent new owners who were not into boating when the. Give the oil a couple of hours to work its way past the piston rings and try again. In neutral runs good at all rpms. Once I get going at a steady rate of speed it stops beeping, blinking and the light even goes off. Get it back home and put it on the hose. Using a high-density cushion material like. My son has a 2003 Yamaha 70b 2-cycle outboard motor. Not unusual for V-4's in this time frame. During testing it was impossible to get sound readings due to 30+ mph winds masking the engine sounds at all speeds. 2008 F-150 4stroke Knocking noise. My 2014 yamaha four stroke engine has a knocking noise which speeds up and slows down with the engine rpm. When an engine is close to seizing up, one may hear loud knocking sounds without any metallic pinging. Re: outboard engine knock I bought a parts motor with a "knock" for $100 last winter. That leaves lots of drivetrain possibilities; hopefully the cure is just replacing one or a few parts. Jul 29, 2012 · I have a Mariner 15 hp 2001 outboard motor that starts but dies after a few seconds. Four(or five with an electric start) things to check when the motor doesn’t even sound like it wants to start, regardless of whether it has an internal or external tank: Kill Switch. After realizing where the noise comes from we will show. This video shows live footage of a common knocking rattling noise these V4 OMC outboard motors make. Outboard motor knocking noise. Went fishing today. The knock sensor will not save an engine from the effects of a serious knock and should not be viewed as a safety valve. Start the engine when cold and let it run at idle for 5 – 10 seconds. During testing it was impossible to get sound readings due to 30+ mph winds masking the engine sounds at all speeds. Curing 2-cycle Engine Problems: Many 2-cycle engines have problems and are sent to the junk yard before their time. To this bolt, attach a socket fitted onto a l ong-handled breaker bar. More info needed. Motor Noise Outboard Knocking. 2, the knock control unit 17 comprises: an ignition noise masking circuit 20 for preventing the detection of ignition noise that is noise caused by ignition for distinguishing the output signal of the knock sensor 15 from this noise; a bandpass filter 21 through which alternating currents having frequencies within a knocking. However, when I slow down from from 3500rpms plus, down to a halt or 1000 rpms, that there is a knocking sound, almost like a piston is not g. If the motor only makes this noise when you are shifting into or out of neutral, drive it til it breaks. About Knocking Noise Motor Outboard. 1 – Outboard Noise Reduction Outboard Motor Noise Reduction. If the smooth rumble you're used to coming from your engine is replaced with a repetitive tapping or pinging sound that becomes louder and faster as you accelerate, that's a classic sign of engine knock. 2007 df175 750hrs motor ran great for about 4 hours out on the water. Make sure that the kill cord (aka “deadman”) is attached properly to the motor. Went fishing today. No codes and motor seems to be working good. 11-28-2015, 06:49 AM. Attaching outboard motor mount / swim ladder. A mechanic said one of the cylinders has a wobble in the wrist pin. Not unusual for V-4's in this time frame. Knocking issue. Outboard motors. Check lower unit oil and no metal. Topic: Knocking Mercury 90 4 stroke. Outboard motor knocking noise. Curing 2-cycle Engine Problems: Many 2-cycle engines have problems and are sent to the junk yard before their time. Hello everyone, new to the forum. View online (82 pages) or download PDF (3 MB) Yamaha V150 User manual • V150 Engine PDF manual download and more Yamaha online manuals. 92 after rebate ) 115 HP Outboard Motor Cart Engine Stand (813709012485 Vehicles & Parts). I would start by checking all plugs for spark to make sure you dont have a dead cylinder. Knock Knock. Who's there? It's your engine, letting you know there's a problem somewhere under the hood. During testing it was impossible to get sound readings due to 30+ mph winds masking the engine sounds at all speeds. June 13, 2019. 2 x 4 blade and 2 x 3 blade. In outboard motors the exhaust system is usually a vertical passage through the engine structure and to reduce out-of-water noise blows out underwater, sometimes through the middle of the propeller. After realizing where the noise comes from we will show. It only does this when in gear and at idle speed. The sounds may go away after a short while, once your oil has a chance to circulate through the engine components and lubricate them. When an engine is close to seizing up, one may hear loud knocking sounds without any metallic pinging. 1 – Outboard Noise Reduction Outboard Motor Noise Reduction. My 2014 yamaha four stroke engine has a knocking noise which speeds up and slows down with the engine rpm. An outboard motor noise often comes from the housing of the engine. Fortunately, various solutions can help you reduce the knocking noise. I have been noticing the last few times out, a noise or knocking sound, when I slow down. If I power off the engine and then on sound at idle is completely clean no matter in netutral or not. More info needed. 2, the knock control unit 17 comprises: an ignition noise masking circuit 20 for preventing the detection of ignition noise that is noise caused by ignition for distinguishing the output signal of the knock sensor 15 from this noise; a bandpass filter 21 through which alternating currents having frequencies within a knocking. About Knocking Noise Motor Outboard. At the end of last season I started hearing a knocking sound at idle and during low rpm. About knocking motor Outboard noise. Any ideas? When running at higer speeds. I have a 2006 Yamaha 115 2 stroke with power tilt and trim. Fill the cylinders with engine oil and let it sit for a few days. My son has a 2003 Yamaha 70b 2-cycle outboard motor. Knock Knock. 2007 df175 750hrs motor ran great for about 4 hours out on the water. However, a properly maintained outboard engine can last more than 4,000 hours! This means that your engine could last for 16-21 years before needing to be replaced. If the engine starts briefly and then quickly dies, you probably have a fuel delivery problem. First sorry for my english because I'm French. Went fishing today. The knock sensor will not save an engine from the effects of a serious knock and should not be viewed as a safety valve. If the shaft runs true it's probably in prop or ropecutter. 1 – Outboard Noise Reduction Outboard Motor Noise Reduction. At this moment, we noticed that the piston of the middle cylinder was overheating due to an oil injection failure. Noise is heard only at idle RPM. To this bolt, attach a socket fitted onto a l ong-handled breaker bar. Outboard motor knocking noise. It's a direct injected outboard motor with a voice so pleasant I could listen to it all day long. 11-28-2015, 06:49 AM. We hung the motor and the motor worked perfectly. 2007 df175 750hrs motor ran great for about 4 hours out on the water. Attaching outboard motor mount / swim ladder. 92 after rebate ) 115 HP Outboard Motor Cart Engine Stand (813709012485 Vehicles & Parts). At higher engine speeds, larger throttle openings and greater loads than idle, you need ignition advance. Yesterday as I'm coming in from a day out the motor began making a knocking noise. This video shows live footage of a common knocking rattling noise these V4 OMC outboard motors make. Mar 7, 2018. I am new to Yamaha ownership and have a 95 150hp. About knocking motor Outboard noise. I have noticed lately that when I go to raise the motor after it has been stored in the down position, it makes a creeking, popping noise while on the trim tabs. A mechanic said one of the cylinders has a wobble in the wrist pin. Curing 2-cycle Engine Problems: Many 2-cycle engines have problems and are sent to the junk yard before their time. I thought from your description that the lower unit was making noise while you were underway. I would start by checking all plugs for spark to make sure you dont have a dead cylinder. Your outboard engine life expectancy, at minimum, is about 1,500 hours (or, 6-8 years for the average boater). Check lower unit oil and no metal. Best, Charlie. Whether in idle or if I rev up the engine same noise persists. at which point I’d like to think the owner of the boat would have been hearing a lot of noise LONG BEFORE a bearing can become this bad!. After realizing where the noise comes from we will show. It sounds like it is knocking or if something is rattling under the cowling. 12-18-2012, 07:27 PM. Knocking issue. 1 – Outboard Noise Reduction Outboard Motor Noise Reduction. I have a 2006 Yamaha 115 2 stroke with power tilt and trim. If it moves, you may be able to salvage the engine. We passed this information on to Honda NZ. I called my dealer and they say this is normal when coming out of a high speed. I have a ticking noise at idle coming from the engine compartment. Outboard motors. This is colloquially referred to as “rod knock”. When an engine is close to seizing up, one may hear loud knocking sounds without any metallic pinging. If a little moisture gets in the housing and rusts up the brushes and brush holders, or the brushes are nearly worn out, gently rapping on the starter housing can sometimes free them up, letting them make enough contact to make the starter work. At this moment, we noticed that the piston of the middle cylinder was overheating due to an oil injection failure. Nearby lightning strikes also encouraged me to take shelter. How Engine Knock Happens. About Outboard Knocking Noise Motor. Oil level is fine now but car continues to make this clicking/ticking noise at idle. Outboard motor stalls when accelerating. Turn the bolt in a clockwise direction to free the engine. For the purpose of 2 stroke engine troubleshooting, we are going to keep the plug inspection simple. There are four major causes of engine knock including engine overheating, ignition timing that is overly advanced, accumulation of carbon in the combustion cylinders or chamber and the usage of lower octane fuel, which is not in line with what is recommended for you. As soon as I bump it up to just over idle, say 1000 RPMs or more, it goes away and sounds and runs smooth. Such a sound can take a toll on your boat performance, and not to mention a little bit annoying. ) the second part to a. Went fishing today. My 2014 yamaha four stroke engine has a knocking noise which speeds up and slows down with the engine rpm. More info needed. If the engine starts briefly and then quickly dies, you probably have a fuel delivery problem. DF250 Rattle/Clunk Noise. Many of those older models are in the ha nds of recent new owners who were not into boating when the. Such a sound can take a toll on your boat performance, and not to mention a little bit annoying. If a little moisture gets in the housing and rusts up the brushes and brush holders, or the brushes are nearly worn out, gently rapping on the starter housing can sometimes free them up, letting them make enough contact to make the starter work. The knock sensor will not save an engine from the effects of a serious knock and should not be viewed as a safety valve. This happens every time I have low RPSs and in gear. Typical problems include hard starting, rough running, a need to adjust the carburetor during use to keep the engine from stalling, a need to rev the engine to keep…. Re: outboard engine knock Does this engine knock all of the time , or just on deceleration? If it knock's only on deceleration, and you hit the fuel primer, and the knock goes away, what you are hearing is like a lean fuel knock. An outboard motor noise often comes from the housing of the engine. View online (82 pages) or download PDF (3 MB) Yamaha V150 User manual • V150 Engine PDF manual download and more Yamaha online manuals. At the end of last season I started hearing a knocking sound at idle and during low rpm. We passed this information on to Honda NZ.