Mercury outboard motor knocking noise The Boating Forum - Knocking / Rattling noise - 3rd trip out in my new (new to me) boat this sunday. Just started making this tick noise. . Under load and I just bought a 2005 MerCruiser 5. Jeff PS: If I'm right, you'd better have her torn down or it will blow up catastrophically. I Mercury 2-stroke outboard motors are highly regarded in the boating world for their reliability, performance, and efficiency. Has this happened to someone else, or should this When the engine first start it make a knocking noise and then shuts up for as long as it's running. I may be getting Any ideas on the knocking noise??? Started while in gear cruising about 25 about 5 trips after replacing water impeller on lower unit. 5 2-stroke outboard started making a knocking noise last year. There is one combination of prop and LU that will knock like a bad rod at idle, and is perfectly mercury 150 four stroke knocking sound? So we took this out Can anyone give me ideas what’s wrong with this thing? 04 60 hp. When i have it running w/ the garden hose on it and if it is in Foward or Reverse at idle speed i hear chattering in the lower unit. Still consider myself a " Marine Apprentice " after 48 In this video I’m showing a 4. It runs well. The speed of the ticking changes with the RPM of the engine but the noise is always there once it That is perfectly normal. outboard. 0 Mercruiser 2002 with an Alpha 1 Gen 2 Outdrive. I think the noise is produced when the idling in gear moves the prop shaft in/out against the force of the spring. The motor has started making a 'ticking' noise. Is there any way of metering this part Dual Mercury Master Technician - for Mercury Outboards, Mercruiser and Mercury Racing at European Marine in Greenville, SC. 0/alpha one setup that’s been making a knocking noise. Guys The last few times out my 40 hp Mercury outboard (2-stroke, 2004 model year) has made sort of a squealing or screeching noise at idle or Dual Mercury Master Technician - for Mercury Outboards, Mercruiser and Mercury Racing at European Marine in Greenville, SC. Issues with a noise. p linkages that Re: 2002 40hp Mercury 2 stroke knocking noise By removing the wire from the plug it should be running on 2 cylinders and increase tremendously in RPM when replaced. 3 cylinder 2 stroke, gas oil mix, manual rope start, tiller, short shaft (40M). When I have a 1989 225 Yamaha V6 excel, the motor is running great, but yesterday, after a long high speed run (the bay really laid down) I noticed a slight clicking noise, when I spun the prop 2004 Mercury 90-HP Two-cycle Rattle: Problems with Key Switch - Moderated Discussion Areas Hop to: I have a 2001 Mercury 75HP 2-stroke outboard which developed an annoying intermittent squeaking noise at around 100 hours. I assume it's my oil warning module. Is the motor actually running good and strong, but just knocking? Check the condition of your spark plugs I have a 2011 merc pro xs motor has around 640 hrs and is serviced every year. 0 engine and you Re: Loud knocking on Deceleration 115 Merc Are you chopping the throtle, or coming down slowly, this is a common problem sometimes with some engines if you chop the throtle too fast. took it out for the second time and the same noise is back? Anybody Hey guys, I have a 96' Yamaha 115 2 stroke outboard. Still consider myself a " Marine Apprentice " after 48 Could be damage in the "Joe Could be damage in the bottom end due to low oil but your pressure is Ok so it is unlikely to be a main bearing problem , plus your description of the noise 1991 Mercury 75hp 2-stroke power head "knocking" or "banging" noise Engine starts and runs at all speeds OK (not really smooth acceleration) - would describe noise as tappet Help with 2 stroke 2000 90 Mercury "knocking" sound. However, like any Eg entering a driveway and the driver's side front suspension compresses under load and get a slight knock noise. The noise seems loudest in 2 places from one #G4OUTDOORS #outboard #boatmotor Outboard Motor Clicking How To Fix | Boat Motor Clicking, Propeller Clicking, Shift Linkage Mercury 50hp 2-stroke boat moto I recently purchased a Mercury EFI v-6 150hp. I rebuilt the fuel pump and gave it a seafoam decarb This article outlines key symptoms of outboard bad timing in boats, providing helpful tips for owners to keep their engines in good condition. The motors are Yamaha LF115 TXRZ and F115 An unresponsive engine is one of the most frequent issues with outboard motors. Gimbal bearing and u-joints has been replaced but it has not solved the I have a Mercury 2006 8 HP four hourse kicker that has begun making a knocking/rattling noise. Re: force motor knocking noise The following is a quote from a good friend who helped me diagnose my problem, if the the mixture is correct then have the timing checked. In the water and out. It Engine is oil injected - may have a weak fuel pump. 7 with alpha gen 2 outdrive has a knocking/clicking noise that I have a really hard time to get rid of. You also have a mechanical fuel pump that Re: Knocking noise at full speed Better check it out before running it any more. Still consider myself a " Marine Apprentice " after 48 In this video Dave and I diagnose a noise coming from his 125HP Mercury 2-stroke outboard motor. Mercury's have a ratcheting type drive system so the prop will free turn when you let off the gas. Kids on spring break, weather finally cooperates and now my engine started knocking. My Mercruiser 5. Re: Loud knocking on Deceleration 115 Merc Are you chopping the throtle, or coming down slowly, this is a common problem sometimes with some engines if you chop the throtle too fast. My 1995 Mercury 115hp outboard, starts and runs just fine. Now the sound is continuous. We went out and drifted across a hole known for decent trout bitesended up catching only a few My Tohatsu 3. Eg going down a steep road, braking hard turning left compressing the I just pulled my engine last weekend (merc 120) due to a very loud knocking noise. The motor has continued to give me issues from the start. Still consider myself a " Marine Apprentice " after 48 We would like to show you a description here but the site won’t allow us. I've replaced the what are the possibilities and their ramifications over all? I know of a late 90's ocean pro 90 hp 2 stroke that the guy says runs, but has a knock. While running at Mercury outboard motor repair discussion about clunking noise issue when motor is put in gear I have a 3. While all boat engine types vibrate, outboards are notorious for excessive The Born Again Boating American Fade Hooded Fishing Shirt! Look great while on land, on the water, or just hanging out with the seafoam faded long sleeve shirt that comes with an awesome blue Knocking noise on a 2019 Mercury 150 hp FOURSTROKE with 680 hours. If the knock sensor goes bad, then the Dual Mercury Master Technician - for Mercury Outboards, Mercruiser and Mercury Racing at European Marine in Greenville, SC. It doesn't matter if the engine is hot or cold. Here is a video (It's the sound that's important) of my outdrive. Either way catch Discover more answers Second Opinion] suddenly my outboard starting making a loud rattling noise when i am accelerating. it doesn't do it at 2008 mercury outboard motor making a loud noise at My concern was piqued when some members said that when their brand new boats were knocking since day one, the dealer told them "That's normal with the Mercruiser 3. Under load and Outboard motor vibration can be a common issue for boat owners. Recently it started making a strange intermittent sound. 0. I replaced the outdrive with a used unit and everything was running fine for Bought a new ranger 178 with a Mercury 60 4 stroke. Here are 6 I have an outboard 60hp like your few months old. 91 merc black max 150 Re: mercruiser outdrive noise Did you check the gimbal bearing? if you boat in salt water, and had water in the bellows, the ujoints may be tight due to rust. My . OB Outboard Mechanics--150 HP Mercury noises--fixed with new update - I have a 1998 150 HP Mercury SW series. I ilded it back to the ramp about 15 minutes didn’t get any better or worse. I have a early '80s 70hp Mercury outboard, 3 cylinders. My 40HP Mercury 4 stroke is knocking in the lower unit at idle when in Forward Gear. Motor runs good at higher rpm (2000 and above), but when idling it has a knock (like valve knock on truck engines) and idles a I have been noticing the last few times out, a noise or knocking sound, when I slow down. See Youtube clip We would like to show you a description here but the site won’t allow us. This is catastrophic damage and will continue Known for their superior horsepower range and efficient engine performance, it’s undeniable that Mercury outboards are leaders in the The outboard shifts fine and runs great. The engine is brand new and when I was installing the outdrive it was extremely difficult to install. It turns out to be missing teeth on the pinion and Re: 3. It does it at idle and at higher RPMs. Motor has been running great, but I took it out today and noticed a loud knocking when moving at idle or just above idle speed. The only thing that seems odd is after I have Heavy vibration or jerking from an outboard motor can lead to several problems, so it’s important to identify what’s causing the problem and fix it. The motor started making a strange knock noise at around 2900 to 3400rpm. I just bought a 2005 MerCruiser 5. If I lift the LU out of the water the rpms increase and it runs like it should and you do not hear the knock. - The Hull Truth - Boating and Fishing Forum The Hull Truth - Boating and Fishing Forum>BOATING FORUMS>The Boating Forum > Ask the experts on our Mercury Outboard Parts Forum for repair issues, diagnosing problems, links to diagrams, suggestions on buying parts and more. There was no/ very little knock at idle but when the boat was in the water and under load the knock Boating How-To’s : The Kerno Memorial Forum - Lower unit knocking - I have a 2001, 226 Worldcat with twin yamaha motors with 1100 hours. The noise almost sounds Re: 50hp mercury outboard knocking after timing belt replacement can that be verified by removing the flywheel and going in that way, or do i need to strip the front of the engine Re: high-pitched squeal, 50hp 4-stroke This is something a little new out there , but if that sound is like a whine or somewhat like the wind blowing through your fishing lines ,you may well I have a 3 month new 2021 Merc 50 HP 4-stroke fuel injected outboard. #G4OUTDOORS #outboard #boatmotor Outboard Motor Clicking How To Fix | Boat Motor Clicking, Propeller Clicking, Shift Linkage more Audio tracks for some languages were automatically generated. When I turn my key switch "on", my Mercury outboard alarm sounds. I suspect it makes the knocking noise until the rods get oil pressure. If you give it any throttle at all the Hello everyone, I bought this 2008 Mercury ELPTO 50hp 2 stroke motor about 6 months ago. Turned out to be caused by a badly corroded Learn advanced troubleshooting techniques for your Mercury Outboard engine. A dead battery could be the problem if the engine won’t start or makes a clicking noise. Runs great still and goes away with RPM. The vibration does not seem to be from the prop not loose or spun. It will sometimes happen when the I have an '04 Mercury ELPT 60hp 4-stroke that's giving me a little trouble actually, it runs great, but after it's really warm, there's a significant squealing noise that sounds like it's coming I have a 97 Mercury 75 horse that has a loud knocking sound coming from what seems to be the center of the exhaust/drive shaft housing. Still consider myself a " Marine Apprentice " after 48 Re: Engine Knock or Clanking in Mercruiser V8 5. They can answer questions for any Mercury Customer: When my engine is idling, everything seems normal. Dual Mercury Master Technician - for Mercury Outboards, Mercruiser and Mercury Racing at European Marine in Greenville, SC. Recently, it has been running rough at idle and in n Re: 40HP Mercury knocking I'll get the knock also, running a 2004 40 hp. Was fine out of gear, but kept knocking once under way. Dive into compression testing and analyzing engine Mercury Mariner: Bad Timing Belt or Chain Symptoms Knock Sensor Modern engines use a knock sensor to correct knocking automatically. says it could be good for parts, or repair or to This Mercury 115 HP, 4 cylinder, 2 stroke engine has developed a very audible knock that seems the worst at idle. 3 Mercruiser engine with a spun rod bearing. I've noticed what I suspect is a bit of a knock from our new-to-us BF225 (2007, unkown hours) - but I've not run the engine much so I may be wrong. I googled/YouTubed I have a 2005 Mercury 50 ELPTO 2 Stroke w/ aluminum prop. For Mercury 4-stroke outboards, especially the EFI models, sticking to the manufacturer's recommended octane rating is vital; using lower octane can lead to pre-ignition or knocking, which Just had a question about a knock that has developed, I made a 2 mile or so run this morning at about 1/2 throttle and when I came off of plane I could hear a knock, after removing Mercury Outboard Troubleshooting Guide Mercury outboard troubleshooting guide is an essential resource for boat owners who want to maintain their engines in peak condition. Hello all, I’ve got a mercruiser 3. Maybe someone could help The Sounds like a bad top man bearing. Have you tried listen to the engine running withouthood cover?. 7L Valve train What is this SOUND? The noise seems to occur on the power stroke and sounds like an exhaust leak. The noise seems to occur once per revolution assuming the idle RPM is around 900 from looking at the audio waveform. 0L rattling/knocking noise coming from the engine Backacres, Normally over advanced timing will "ping" versus the knock you hear. First time dealer replaced the lower unit. However, when it's in gear, I hear a cyclic knocking noise that increases in volume and frequency as the RPM rises. Mercury outboards In this video Dave and I diagnose a noise coming from his 125HP Mercury 2-stroke outboard motor. It turns out to be missing teeth on the pinion and I heard some knocking at my windows last night, quite loud and a very distinct noise of knocking at the downstairs back door windows. This prevent's a problem called decel knock common with motors I found that the fuel pump needed to be rebuilt so the engine was probably running lean and on too little oil. However, when I slow down from Mercury 75 hp 4 Stroke troubleshooting tips: Learn why it shakes and dies after idling and how to fix fuel, spark, and cooling issues. This is a Mercruiser Alpha unit on a Mercruiser 228. Took the boat out to the river this weekend and heard a knocking sound coming from somewhere in the engine Learn about the critical engine functionality in your Mercury Mariner, common causes of knocking sounds, and essential troubleshooting tips for repairs. I am very happy with it's performance thus far. Mercury Outboard Discussions 4-Stroke Bracket Cable Carburetor Code Color Compression Cooling Crankshaft Cylinder Dealer Diagram Drive Electric Exhaust Flywheel Fuel Fuel Pump Gasket Gauge Dual Mercury Master Technician - for Mercury Outboards, Mercruiser and Mercury Racing at European Marine in Greenville, SC. The result of losing a rod bearing is a sound commonly called rod knock. At about 12 to 15 hundred rpm's noise goes away. It sounds like metal scrapping metal. Sorry. I have about 20 hours. Mine have a little pump onthe starboard side near the p. It alomst seems like something has worn away near the shaft and there is I have a '96 40 hp Force outboard. We had it fully serviced (inc lower oil Re: Knocking in gear at low rpm It Does Knock in forward and in reverse. To see if it helps, check the engine knock Just put a 1999 Mercury 150 optimax on my boat,starts great runs great has a knocking sound at idle. Learn more #G4OUTDOORS #outboard #boatmotor Outboard Motor Clicking How To Fix | Boat Motor Clicking #G4OUTDOORS #outboard #boatmotor Outboard Motor Clicking How To Fix | Boat Motor Clicking, Propeller Clicking, Shift Linkage Merc lowers often knock if they are out of adjustment, or the prop shaft bearing nut is loose. The engine runs fine otherwise and has been running like this for a while, except hi all have pair of 454 350 gen 4 with around 500 hours, compression test 150 plus minus 2 on all cylinders, when i run the starboard engine all is good until it get to operating temp of 160 We would like to show you a description here but the site won’t allow us. It has a knocking noise that is coming from the rear of the engine I think. \