I'm with Cap F on this! Likely and attractive explaination. If not, start
checking all hoses, heat exchanger, and manifold.

surfnturf

"Frank Hopkins" wrote in message
ink.net...
Hi Bob,

I had a similar problem with a Mercruiser It turned out to be a leaking
rubber exhaust coupler. This also explains the oily feeling in the water.

Capt. Frank