Warm Weather Sailor
Join Date: Sep 2006
Thanked 9 Times in 8 Posts
Rep Power: 9
I would check the impeller. I know you said you recently replaced it and that may be the problem. It may have been an old dry one or got squished a bit going in and now has lost a vane. On the 3GM30 they're pretty easy to get at, unless you have a C&C where it's real hard to get at that side of the engine.
Toronto in summer, Bahamas in winter.
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