Engine Vibration

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cecilgriggs
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Joined: 9/12/08
Posts: 3
Engine Vibration

I have a 1985 with a vibration at about 1800 rpm's, has new motor mounts & the prop (2Blade) was balanced.

cillman
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Joined: 12/22/07
Posts: 30

If your injectors are original, they may be due for a rebuild to make them send an equal amount of fuel to the cylinders with good atomization.

Craig

Craig Illman, Seattle
S/V Espresso C34 #1150 1991

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TomSoko
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Joined: 2/15/07
Posts: 978

Cecil,
Have you checked your prop shaft? It could be slightly bent (out of true) and give you vibrations at certain RPMs. If you have the original bronze shaft, you might want to consider a SS shaft. Much stiffer and less prone to bending. Also, have you checked your cutless bearing? A worn cutless bearing could also give you vibrations.

Tom Sokoloski
C36/375IA Past Commodore
Noank, CT

cecilgriggs
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Joined: 9/12/08
Posts: 3

I checked the cutless bearing it seems ok. The only time it does it is underway so I dont think It's the injectors. Someone suggested there might be a alignment issue at the shaft & the engine. How would you ck the shaft to see if it was bent?

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