Then we checked the intake manifold bolts and discovered all were loose. This probably happened ... usage but also eliminated a vacuum leak. This may require re-tuning the carburetor idle circuit ...

Worse still, your car can lose ... in the intake manifold and the problem is not the result of a bad PCV valve, the fixes can vary. Unless you're an experienced home mechanic, you may want to ...

or $249.99 with a chrome powdercoating treatment. Installation is simple using four intake manifold bolts, and it can't leak!