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Old 12-10-2014, 09:06 PM   #4
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City: Astoria
Country: USA
Vessel Name: Florence A
Vessel Model: 47' Sutton
Join Date: Oct 2014
Posts: 173
Sounds like excess pressure in the crankcase. First step is to check the crank case breather system making sure you don't have pressure in the base from that system not working.
Then go from there. Probably start it up at the dock and see if you have any new unwelcome noises. Next on the list would be and internal problem letting compression down into the base. Holes in the tops of pistons are good for that. Or just at the end of its life?
Hope it is just a plugged breather.
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