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American Cars
Cadillac DeVille
Chevy Blazer S-10

What would cause 1994 cadillac deville engine overheating I changed the thermostat coolant temp sensor radiator and water pump. when i removed number 4 cyl plug it was orange?


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Wiki User
September 09, 2007 5:40PM

Are you loosing coolant?

Is coolant getting mixed with oil or vice versa?

Run engine to normal opeating temperature

Remove dipstick and let a drop fall onto a hot engine part

Oil will smoke coolant will sizzle Do a compression test

2 adjacient cylinders with low readings indicate a leaking head gasket