Weird 'severe' vibration
I just bought the 1979 Islander 30 with the Volvo 13hp.
the engine purrs in neutral and can rev it up with no vibration at all - smooth as my F-150, ha.
The previous owner recommended me to 'loosen' the 'knuckle' to allow water to drip. - Inboard engines and this technique is greek to me - I assume to 'cool' the shaft? I do not know. Any suggestions on readings?
Well I did this under his observation and it drips 1 drop about every 2-3 seconds. Now I have this HORRIBLE vibration when in gear - it rattles the whole boat when just above idle speed. Very severe vibrations.
I went back and tightened the 'knuckle' back up to 1 drop per 5-10 seconds ( which was a minute adjustment - I mean maybe .5 degree turn.
Now the engine purrs in gear and I can really get some speed.
So, was this the fix? Or have I lost my mind?