Heating & cooling system

Asked by May 14, 2016 at 08:26 PM about the 2004 Kia Optima LX V6

Question type: Maintenance & Repair

How do you tell the diffrence between ass
bad water pump or a bad head gasket?

1 Answer

37,915

For the head gasket, you could do a compression test, you would find a low cylinder or two, check the exhaust to see if there is a lot of white smoke coming out, coolant could get into the oil, check the oil to see if it is milky, the engine could over heat. On the water pump, usually they start leaking, you would see wetness in the area of the water pump or a drip mark on the ground.

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