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Re: Yanmar 2GM20F - Not pumping water at slow speeds
Captainmeme, I do not think it is sucking air since the pump intake is lower then the waterline it does not leak out when not running so I would assume it does not leak air in when in operation.
The impeller was replaced the end of last season. It was an original OEM impleller for the engine.
The part of the system that does not make sense to me is on the back side of the exhaust, could it be something associted with the heat exchanger itself, mixing elbow or the muffler?
Schock - New York 36