525's Running Hot

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06-16-2013, 02:41 PM

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525's Running Hot

Have a 2004 35 Fountain with 525's port motor is running way hot 195. Changed sea pump impeller and back flushed still running hot. Any thoughts on where to look next?

06-16-2013, 03:13 PM

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I had an issue once where a tiny rock made it's way to the thermostat and stuck it. Worth a look maybe.

06-16-2013, 08:22 PM

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I had similar issue with a 502EFI closed cooling system. Took the end caps off the heat exchanger and found some gunk, cleared out the passages with a thin metal rod. All was good after that.