Question about 1994 Mercury Grand Marquis

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How will i know which head gasket to change on my ford ex

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Have a compression test done and the bank showing irregular compression readings will be the one.

Posted on Nov 18, 2013

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I assume this is a 'V' motor. Do a compression test and repair the one on the bank with low compression. Of course, if you are stripping the motor down that far, the smart thing to do is to replace both head gaskets.

Posted on Nov 18, 2013

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first up , if there was no compression test done to determine if the head gasket is in fact at fault then do not take that persons word for the fault
the original problem could be blocked radiator cores that could handle the extra cooling required by the long trip at speed, could be a problem thermostat or radiator hose collapsing
while you may now have a problem head gasket / warped/cracked head that is just the symptom of a failure elsewhere
from your statement I would recommend that you find an accredited service center with experience on your make of vehicle and get proper diagnosis and quotes as it will cost you a lot more from your inexperience if you diy

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