Lostfisher
Petty Officer 2nd Class
- Joined
- Nov 2, 2009
- Messages
- 147
I have a 9.5 evinrude that I had just purchased. It only had 50lb of compression on both the top and bottom cylinder. I put some oil in the plug holes and the compression went to 60 psi. I than took the cylinder head off and saw that the powerhead had been honed out at one point in time. the cylinder walls look great no scratches etc. Now my question is since I had 60lbs on both cylinders what are the chances of both cylinders going bad and having 50lbs dry and 60 lbs wet? Is this more on the order of a sign of a bad head gasket?