1985 evinrude 70hp overheating

[mav6759]

I got a 1985 evinrude 70hp runs great but its over heating. Changed the thermostat and checked the head it seems fine. Does anyone know what could cause the overheating.

mav6759

[jtexas]

Just so everbody's on the same page, what all does "checked the head" entail?

If my motor was overheating, first thing I'd do is a water pump kit.

[mav6759]

The head shows no signs of leakage, I was told something about the exhaust gas backing up in the manifold or something like that. Could that be a possibility.

mav6759

[flabum]

Sounds like a bad water pump impeller, this is where you should start

[mav6759]

Thanks, i will try changing the water pump

[tashasdaddy]

you should have a strong (pee stream) tale tell. it only is an indicator the impeller is pumping water, if weak stream, you definitely need water pump service.

[salar600]

Mine is a 1977 Rude 70Hp but if the engin is idleing, should the pee stream be strong or is it ok if it only spit?

Thanks, Mart

[jtexas]

sal you should be seeing a strong pee stream, too, even at idle. check the hose & nipple first, sometimes insects climb up in there.