Join Date: Jul 2000
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M25XP seawater pump will not pump
I started my engine at the boat yard today and the seawater pump would not pick up water with the hose hooked to the riser. Disconected it pumps like mad all the way thru the heat exchanger and all hoses. With the hose hooked to the muffler and disconnected from the raw water pump I can blow freely thru the hose thru the heat exchanger and into the exhaust system.