jimsrtc
Member
I have a 1994 Merc 2 cycle 40 hp. As I was winterizing it last year i noticed a trickle of water that looked like it was coming from somewhere around the top plug. I pulled it out today , started it up ,and sure enough there is a trickle of water. I pulled the plug and there is water coming out of the cylinder, running. Did a compression test with my ancient tested and all cylinders are 100 lb plus, and consistent in all four. The thing appears to run fine, starts ok. Any ideas as to why? Could it be a head gasket? Haven't ever worked on outboards only cars and many years ago.