Join Date: Aug 2012
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Raw water pump...what's normal?
I have a 1986 Westerbeke 27 and always motor on and off the dock. When I start the engine at the dock, I normally get exhaust water splashes right away, even if the boat has been sitting for a couple of weeks.
However, frequently when I start the engine after we've been sailing (in preparation to return to the dock), the only way I can get the exhaust water splashes is to rev the engine up high. (The engine starts fine in idle, but the pump will not suck up water at that speed.) It's as if all the bouncing around while sailing causes the pump to lose its prime and it cannot re-establish it without the engine being at a higher rpm. The impeller has been replaced and is fine. I've checked for blockages and there are none. My mechanic does not seem to be concerned, so maybe it's normal. I just do not recall having to do this on my prior boat, which had a Westerbeke 21, and I'm afraid that I'm putting unnecessary stress on the impeller.
What's a reasonable expectation for the raw water pump?
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Nonsuch 30 Ultra #343 1986
West River, MD