Quote:
Originally Posted by thefishingfreak
165 is hardly overheating.
if it stays under that, in all conditions, I wouldn't worry about it.
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I agree that the 165 isn't over heating. I guess my concern is the fluctuation and why it is so drastic. When I had the muffs on it and the thermostat was out the exhaust water flowed unrestricted. Now I expect a bit of restriction whe the thermostat is in and closed but I was actually getting a flush back through the drive when the thermostat closed back up (cooled to 140'). That never happened in the eight years I've owned the boat.
So, could the thermostat housing be clogged so far in that I can't see that when the thermostat closes it restricts the water flow or could the engine water pump (not the raw water pump) be bad?
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