"gonefishiing" wrote in message
...
??? only possible if you have a very substanial blockage before the water
jacket (starboard side if direct drive)
if the engine is spinning and the raw water open...this baby is pumping
water and it must be going somewhere.
if the exhaust is completely clogged as you stated, chances are the water
is
entering the manifold into the engine.
your engine your boat......just my opinion.....good luck.

Sorry about my bad description. The part of the exhaust that carries the
exhaust gasses away is not plugged. I can start the motor and exhaust gas
comes out normally - just no water. Nor will the pump suck up any water (or
antifreeze) while the system is hooked up normally. But if I disconnect the
hose where it connects to the top of the inverted U casting to join the
exhaust gasses and cool the hoses then plenty of water (antifreeze) comes
thru and runs into the bilge.

Thanks again