Trai wrote:
Some advice on where to look next would be greatly appreciated. I have
a Yanmar 2GM diesel engine that stops pumping water through the
cooling system after I have been out sailing for the day. To get it
started pumping again; I need to let the boat sit flat in the water
for about an hour. I have changed the impeller, but still have the
problem. The only time this seems to happen is when I have the boat
heeled over for a few hours.

Btw, just out of curiosity, what is the boat and where is it located? The
boat discussed in the thread I referenced is a 1989 S2 (built on and for
the Great Lakes, afaik) that is now in San Francisco.