by Anonymous on June 12th, 2009

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Bought a 94 deville concours, idles for hours fine when drive it overheats and boils over in a matter of 10-15 miles. i have put a new water pump, thermostat on it flushed the engine, radiator check hoses etc. thought of head gasket but oil not milky

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by Sloth13 on July 30th, 2009
A cracked engine head or block can let exhaust/combustion gasses seep into your cooling system causing it to overheat. You may only see it when the motor is under load and not when idelling.
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Bought a 94 deville concours, idles for hours fine when drive it overheats and boils over in a matter of 10-15 miles. i have put a new water pump, thermostat on it flushed the engine, radiator check hoses etc. thought of head gasket but oil not milky

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Bought a 94 deville concours, idles for hours fine when drive it overheats and boils over in a matter of 10-15 miles. i have put a new water pump, thermostat on it flushed the engine, radiator check hoses etc. thought of head gasket but oil not milky

Answers. 1 helpful answer below.

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