196155HP JohnsonCD18

" Need to find out what the co

" Need to find out what the compression should be for this motor. I only have25lbs.and it will not crank,It is getting fire,I put fuel in the cylinder,but it will not fire over. "

"Steve.... There is really no

"Steve.... There is really no set figure on what the compression should be. However a rule of thumb is around 65/70lbs, and even. It depends on various aspects ie... are the cylinder walls dry, wet.... are you pulling it over slowly, fast? If after adding fuel, and the cylinders are wet, all you can get is 25lbs on either cylinder regardless of how fast you pull it over, I would be inclinded to think that the head gasket is failing at the area between the cylinders. FYI, in my opinion, that engine was one of the better small hp designed OMC engines ever.

Joe "