Anyone know what this noise is? I'm going to check a few things but thought maybe someone has heard this before. New video by Dan R
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800 knock noise
- Thread starter danzr1
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JeremyD615
Well-Known Member
My initial thought is that you’ve lost a balance shaft bearing. Try to get a camera down behind the engine and look for a hole or cracks in the case...
Pwnage1337
Active Member
Agreed. Counterbalance shaft bearing. Sounds a lot like rod knock on a car. Happened to me twice, grenaded the lower case. Look for chunks of aluminum under the engine
Okay, I'll take a look tomorrow.
I was thinking that as well. I'm going to check for play in the piston while turning the flywheel by hand.
JeremyD615
Well-Known Member
The wrist pin is a possibility, but it sure sounds like my 787 did last summer when I lost the balance shaft bearing. I’d look for metal in the hull and stick a camera back there before I pulled the head to check piston play...
Pwnage1337
Active Member
https://www.seadooforum.com/threads...haft-bearings-in-one-year.111236/#post-669564
Take a look at my picture in the first post. This happened to me twice this year - the engines are getting old, if they never had new bottom ends it's only a matter of time. That bearing is greased and sealed from the factory, it does not get lubrication while the engine is running so it has a limited lifespan.
Take a look at my picture in the first post. This happened to me twice this year - the engines are getting old, if they never had new bottom ends it's only a matter of time. That bearing is greased and sealed from the factory, it does not get lubrication while the engine is running so it has a limited lifespan.
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