since some weeks I noticed that my mercruiser 5.7l with alphaone-2 drive
is vibrating and makes more noise then it should do.
This is running in gear and in free. the engine is starting fine but there is a sort of rumble and the whole boat vibrates. (bayliner 2850 from 1992).
I changed the spark plugs and all looked white except for cylinder 7 that
was black. There were 2 different brands of plugs in there.
Also the oil is smelling for gasoline, but i do not know if a bit is normal or not.
Could you give me some hints where to start first to solve this. Can it be that the engine was used too long on rpm's around 1000? I hardly use it at rpm's higher then 2500. (gasoline is too expensive here in europe, currently around EUR 1.40 for one litre -> around EUR 5.30 per gallon -> $ 7.06 per gallon)
Last winter all bellows and the bearing and the shift cable were replaced.
is vibrating and makes more noise then it should do.
This is running in gear and in free. the engine is starting fine but there is a sort of rumble and the whole boat vibrates. (bayliner 2850 from 1992).
I changed the spark plugs and all looked white except for cylinder 7 that
was black. There were 2 different brands of plugs in there.
Also the oil is smelling for gasoline, but i do not know if a bit is normal or not.
Could you give me some hints where to start first to solve this. Can it be that the engine was used too long on rpm's around 1000? I hardly use it at rpm's higher then 2500. (gasoline is too expensive here in europe, currently around EUR 1.40 for one litre -> around EUR 5.30 per gallon -> $ 7.06 per gallon)
Last winter all bellows and the bearing and the shift cable were replaced.