OMC 5.0L 305 Engine Vibration

ledbed6b

Recruit
Joined
Jul 21, 2010
Messages
4
Hi All,

I have a 1988 omc 5.0l, between 2500-3500rpm there is a vibration, its not awful but I don't like it.

I have taken off the outdrive, removed the front pulley (so no belts or accessories running) and it still vibrates

I have not removed the harmonic balancer but I think I can get at it without pulling the engine, I have no idea if that will even fix it.

So any advice on what to do next or should I just live with it?
 

cr2k

Captain
Joined
Mar 19, 2009
Messages
3,730
Re: OMC 5.0L 305 Engine Vibration

Did you do a compression test? Does it have a good tune up? Not all vibrations are balance related.
 
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