The overflow tank has pressure builted up even when the car is cold

Asked by rj1310 May 28, 2014 at 06:42 PM about the 1996 Mazda Millenia

Question type: General

1 Answer

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You may also have a blown head gasket that's leaking fuel/air and of course, pressure into the cooling system. There a lot more pressure in the cylinders than in the cooling system.

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