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Old 06-03-2013, 04:59 PM
PureInboards PureInboards is offline
TT Regular
 
Join Date: Dec 2012
Boat: EPIC 23v
Location: New Zealand
Posts: 62
Raw water impeller or partial blockage in the line to the heat exchanger check strainers etc, also check joins in hose to make sure it can't suck air in somewhere on the suction side, when boat is running at a decent speed the water is forced through the scupper and the engine is not so reliant on the raw water impeller to get a cold water supply
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