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Old 01-21-2013
H and E H and E is offline
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Engine over temp at idle

Went out for a sail Saturday and when returning to the slip I left the engine running at idle until I had the boat secured. (This is something I always do) While idling the temperature started to rise above normal and quickly went back to normal when I increased the RPM. Not sure what to look for. I have not changed the impeller yet this winter. I have cleaned the sea water intake filter. Engine is a Universal 12hp diesel. Any recommendations?
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