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Old 10-02-2022, 01:36 PM   #2
Senior Member
City: San Diego, CA
Vessel Name: Freedom
Vessel Model: Hatteras 48 LRC
Join Date: Jan 2019
Posts: 460
I had a problem in a prior boat with genset overheating. Checked all the obvious items, changed impeller, outflow seawater was strong. Have you checked the temp of the exhaust water? If it is not at least a bit warm after 15 minutes you have probably have an issue with either the heat exchanger or the freshwater cooling pump. My problem was the pump. Flow was apparently weak or non existent so while the exhaust water was vigorous it was not transferring heat from the freshwater to the seawater. Hope this helps.
Ken Connor
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