"In December I bought a 1985 S
"In December I bought a 1985 Searay that has a Mercruiser 305(Chevy). I was told it had a cracked block when I bought it. I figured I wanted to be sure, so when it warmed up outside I tried to start it. It started right up. I let it run with water running through it for a good 30 minutes. The temp gauge is broke but the engine did not overheat at all. It had good oil pressure, ran good, and had no water in the block. There was also no water coming out of the block anywhere. It did have a little steam coming from the exhaust but I was told this could be fogging oil. I then took it out on the water to see if it would do anything different under load. I took it out and ran it for a good 1.5 hours at 3000-4000rpm non-stop and it maintained good oil pressure, didn't overheat, and ran well. It did however, die when I put it in forward or reverse from idle unless I put it in fast(idle adjustement?). Maybe just a cracked exhaust manifold leaking water into the exhaust? It is raw water cooled. Any help would be greatly appreciated. I would rather replace an exhaust manifold before an engine. Thank you."
"In December I bought a 1985 Searay that has a Mercruiser 305(Chevy). I was told it had a cracked block when I bought it. I figured I wanted to be sure, so when it warmed up outside I tried to start it. It started right up. I let it run with water running through it for a good 30 minutes. The temp gauge is broke but the engine did not overheat at all. It had good oil pressure, ran good, and had no water in the block. There was also no water coming out of the block anywhere. It did have a little steam coming from the exhaust but I was told this could be fogging oil. I then took it out on the water to see if it would do anything different under load. I took it out and ran it for a good 1.5 hours at 3000-4000rpm non-stop and it maintained good oil pressure, didn't overheat, and ran well. It did however, die when I put it in forward or reverse from idle unless I put it in fast(idle adjustement?). Maybe just a cracked exhaust manifold leaking water into the exhaust? It is raw water cooled. Any help would be greatly appreciated. I would rather replace an exhaust manifold before an engine. Thank you."