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Mitsubishi Challenger Early Radiator Cap failure. Is this a regular occurrence?

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  • iamathis Dec 05, 2008

    my 1989 mitsubishi galant recently started running makes a loud shrieking noise, the temp get hot, the fan does not kick on to cool it. the coolant in the reservior expands..leaking out..the radiator makes a hissing noise. Oh, and it started blowing out white smoke from the exhaust pipe. Are these signs of a blown head gasket?



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No, usually when a radiator cap fails there is another problem. either you have a blown head gasket that is allowing compression air gases to move into your cooling system or you have a coolant temperature sending unit that is failing in service and not letting your cooling fan kick on at the appropriate time to cool your engine down.which will prematurely destroy the rubber gasket on the bottom side of your radiator cap.

Posted on Sep 21, 2008


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