When to replace valve cover gasket on 4.2L?
When to replace valve cover gasket on 4.2L? Given that #3 and #5 were the wells that had oil residue, #3 being the worst with the most oil, it would be expected that others may soon fail and that oil residue could accumulate even more so. Catching this before it becomes a spark misfire, to me, makes sense, especially when it's summer and not a wintertime mess to work on. How to replace gasket on GMT GMT 4.2L? Remove the drive belt. Pretty straightforward and easy to do. 3. Remove the intake plenum, the air intake hose, the air injection...