Such a sound can take a toll on your boat performance and not to mention a little bit annoying. About Press Copyright Contact us Creators Advertise Developers Terms Privacy Policy Safety How YouTube works Test new features.
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An outboard motor noise often comes from the housing of the engine.
Mercury outboard motor knocking noise. I have a knocking noise in my lower unit of my 2012 Mercury Verado 300. Silver Block came into inventory with the lower unit completely locked. It is not smoking nor does it run poorly when in gear.
The Marine Mechanic Im going to connect you with knows all the tricks and shortcuts. It sounds like it is knocking or if something is rattling under the cowling. 2002 Mercury 225hp Optimax Not rated yet Both motors have been running fine yesterday went to the marina to get the boat ready to go fishing and both batteries were dead.
Sometimes things that you think will be really complicated end up being easy to fix. If you had a marine mechanic diagnose the sound as a lower unit problem its a lower unit problem. Ive heard that sound once before on my first center console in high school.
If you hear the knock in the lower unit while underway you are probably missing a tooth on your pinion gear. With the engine of turn the prop by handand get a feel for itPut it in forward gearIt should click if you turn it clockwiseand lock if you turn it counter clockwiseDoes it do it in forward and reverse gear. If the dealer clears the engine and says it is ok then when at home or whilst you are there and whilst the engine is running slide your ear down the leg midsection and see if the knocking gets louder as you approach the gear case.
Engine is oil injected - may have a weak fuel pump. I would start by checking all plugs for spark to make sure you dont have a dead cylinder. If all have spark and you have access to a compression gauge check compression in all cylinders.
1100 fix for what I thought was a New Lower Unit. That leaves lots of drivetrain possibilities. 2002 Mercury 40hp 2 stroke.
Engine starts and runs at all speeds OK - would describe noise as tappet noise if the engine had valves. About Press Copyright Contact us Creators Advertise Developers Terms Privacy Policy Safety How YouTube works Test new features Press Copyright Contact us Creators. Tell me a bit more about whats going on so the Marine Mechanic can help you best.
When the cowling is removed the sound appears to. You could have blown a pistonMore info needed. Mercury mariner 150 hp optimax great sound of 2 stroke engine with direct injectioninsane sound.
You might have experienced itone 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. Recently it has been running rough at idle and in neutral. Making a strange tappingknocking noise.
The sound goes away at higher RPMs and while in gear. Methodically check everything part by part from bottom to top starting with the prop. Ad Import Mercury Outboard Easily from China.
At least thats what it sounds like from your description. Ad Import Mercury Outboard Easily from China. Since the noise goes away in neutral its probably not engine damage.
Knocking or Hard Rattle In Outboard You can take the shift cable offand shift it by handIf the sound disappears then the cable need adjustmentor replacement. Noise above 2500 RPM 1982 Mercury 115HP Outboard. Hopefully the cure is just replacing one or a few parts.
This old mercury has a ticking sound bad piston. Mercury 1999 175 efi outboard Not rated yet we replaced both voltage regulators ran good in tank a weak later i went to lake as soon as i started engine i hear a loud clacking noise checked lower. In this video we do a procedural walk-thru to diagnose and repair the lower.
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