Join Date: Oct 2006
Location: Maryland USA
Thanked 64 Times in 44 Posts
Rep Power: 11
First Congrats on your new boat!!!
Start by checking the thermostat & the impeller. Not a bad idea to check the flow of water from the the through hull. If that fails to do it, I might suggest removing your heat exchanger, take it to a radiator shop and they will soak it in acid, If that doesn't do it I 'm at a loss.
As far as restarting it while sailing to cool it, this makes no sense to me. Good practice is too run your motor at idle for a few minutes after motoring to cool down the engine a bit, but why its developing heat while its off, just doesn't make sense. Maybe the previous owner lost their mind at sea somewhere?
As far as the engaging the prop, always keep it in gear, preferably in reverse for most trannies. A folding prop wouldn't make a difference in the heat build up but it would make a difference in your sailing performance. Some transmissions, not engines (to my knowledge) can become hot by the shaft turning while sailing because they use a pump to cool the transmission while the engine is running.
Sounds suspicious or someone got their information wrong. I'll be interested to see if any others have experienced similar things...umm???
Last edited by T37Chef; 11-08-2006 at 04:18 PM.