My car came with 2 cork gaskets on covers. i had to change the head gaskets so i put 2 new cork gaskets back twice and still won't stop leaking!
even put a little rtv. any suggestions?
1. Establish what area the leak(s) are coming from
2. Remove and check for the impression of the head seal in the bottom of the gasket. This can go a LONG ways towards identifying the problem / area
3 . Try setting the valve cover on the head without gaskets and "rocking" it Checking for flatness.
4. Check the areas surrounding the bolt holes as they sometimes get stretched ( depressed) from over tightening. If so re level using a small hammer and dolly.
Two gaskets are sometimes used because of a sealing problem or to allow additional rocker arm clearance. When doing so I always put sealer between the two.
Also might want to check and verify that you are not building too much crankcase pressure
