I have a 94 crown Vic how do I know if my head gasket mis. Up

Hello There are several ways to check. The easiest is an Electronic cylinder balance test. The engine is run and the Testing machine disables the spark to the cylinders, one by one.

This allows the Testing machine to determine how much work each cylinder is doing. If the head gasket is messed up, the Testing machine will show it.

The above test is easier to perform than a compression test and does not involve removing the sparkplugs. You can always verify the Electronic test with the old fashion compression test. You do not have to remove both heads to fix your engine unless the tests reveal both are bad.

Before doing this work, you may want to take off the metal Airhorn and clean the grooves beneath the Airhorn gasket. There are only 8 bolts holding this part on, once you remove the plastic Air duct from the Airfilter. The gasket costs $10. The groove is important to the EGR system and can make a big difference in performance. It may be causing the problem instead of the heads.

I hope my solution is very helpful to you.