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Gray Model 70 overheating

Old Marine Engine » Gray Marine Gas Engines - 4, 6, and 8 cylinder » Gray Model 70 overheating « Previous Next »

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preston stark
New member
Username: prestonstark

Post Number: 1
Registered: 04-2010
Posted on Monday, April 19, 2010 - 11:05 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Moderator/Admin Only)

Ran the engine briefly last fall(first time after purchase)-ran OK. Put it in this year and immediately overheated. Checked water pump impeller- it looks new. I'll run on lift to check how much if any water is pumping through and I'll replace hose from pump to thru hull intake. Seems to run fine??? Any ideas???
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preston stark
New member
Username: prestonstark

Post Number: 2
Registered: 04-2010
Posted on Monday, April 19, 2010 - 12:00 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Moderator/Admin Only)

Additional info- engine does not have thermostat or oil cooler. (that is correct for this model)

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