Iv been a great fan of this forum and have lurked and read many helpful topics. I now have a problem with my engine I have now replaced 3 heat exchanger polar end caps in quick succession that split following the engine overheating. I have no leaks, I have hot water through the calorifier so presume the thermostat is working, no oil discolouration, I have bled the air using a tap on the top of the skin tank and with the rad cap off have seen the water moving so the pump appears to be working. Rad cap is 7psi.
i ran the boat back to its mooring with the cap off so no pressure and got myself a head gasket test kit that turned from blue to yellow showing exhaust gases present in the cooling system= head gasket leaking??
this is where I am at...
my local engine man has retired so can anyone direct me to a good engineer to help me?
in the meantime I am considering a can of head gasket sealer only for now and repair in the spring..good idea?
have I missed owt?