Genesis
Newbie
My 1980 Isuzu C240 also Pisces 60 has combustion gas in the coolant The coolant reservior overflows before the engine gets to full temperature. Before I realized there was a problem, i was on test run and when I got to 2000 rpm, there was white smoke out the exhaust.It has always been very dependable. i live in MTand the boat is stored in an enclosed building, but hasn’t been in the water for 8 yeears. i do start it up every year. My guess is that the coolant lost some of it’s antifreeze properties and I have a cracked block or head..can’t imagine a bad head gasket as I have never run it hardfor sale but not marinized..