cjepearson
New member
I have a raw water cooled Yanmar 2GM20, which starts and runs just fine, with a good flow of cooling water, except when I return to harbour, after sailing, when the cooling water takes a very nervous three or four minutes to come spluttering through.
I keep the intake sea cock open at sea.
Water flows normally on first start up, every time, and it all works fine if I just go for a motor, but not after sailing.
If water is draining out of the raw water filter when the boat is heeled over, why now, and not in the past.
I have changed all the hoses and hose clamps, changed the water pump face plate and impeller and the rubber seal on the filter. The filter lid appears intact. Next time out I will try closing the sea cock while sailing, but this is very awkward to get at, and sure as god made little fishes, I will forget to re-open it.
Any thing else I can try?
Cheers
I keep the intake sea cock open at sea.
Water flows normally on first start up, every time, and it all works fine if I just go for a motor, but not after sailing.
If water is draining out of the raw water filter when the boat is heeled over, why now, and not in the past.
I have changed all the hoses and hose clamps, changed the water pump face plate and impeller and the rubber seal on the filter. The filter lid appears intact. Next time out I will try closing the sea cock while sailing, but this is very awkward to get at, and sure as god made little fishes, I will forget to re-open it.
Any thing else I can try?
Cheers