OK - Assuming you attached a pressure hose to the raw water
inlet and subsequently filled the exhaust
box, then backflowed through the exhaust
manifold past the valves and into the cylinders?
How is the oil
level? Overfull? i.e. is there water in the sump? I would drain the sump first. Heating
the oil with significant amount of water in it could create a bit of a mess. Also if it's sat for a while the oil and water could separate - the oil will float on top and the oil pickup will suck up water for a while.
Stick your garden hose in a bucket and turn it on. Connect a hose to the inlet of the raw water pump
and dip it in teh bucket as well. Make sure the pump doesn't have to lift
it from the ground all the way to the engine if on the hard
, though. That's a big lift
for a thrash pump. Put the bucket in the cockpit
or something. Let the bucket overflow so there is always supply to the raw water