Mercruiser 4.3 vibration

ian ash

Cadet
Joined
Mar 6, 2010
Messages
28
Hi!

I have a 4.3 v6 on a 18ft speedboat.
When in nuetrel and at low revs in gear theres a vibration traveling through the hull.
Its a 1990 model and the engine seems to be running sweet.

Iv changed fuel filter,spark plugs and cleaned the air filter and greased the gimble bearing through the grease nipple.

Is it normal to have some vibration???

Oh also the exhaust fumes seem very strong is this normal as the plugs look ok not oiled up or anything.

cheers ian
 
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