1990 YJ 4.2 Inline 6
I've had vacuum leak issues ever since I bought the new Offenhauser Intake manifold and only vacuum leaks on the manifold itself on the head. Me and a good shop I deal with have concluded that the manifold isn't built right.
The cylinder head is not messed up. I know for sure.
We have tried different kinds of gaskets and none of them will seal up right. We got it to run really good but not even a whole day and while driving it around it just starts to leak again. And every time we take the manifold off the gaskets aren't messed up but it's not sealed up.
They suggested taking the manifold to a machine shop.
I've thought about just getting the factory manifold but my old one is trash and of course I can't find any new ones.
Any ideas? What should I do????
BTW if anyone has a factory manifold who is interested in a trade well also let me know. BUT IT NEEDS TO BE DECENT AND NOT BRITLE LOOKING!!