Originally Posted by topside
Also, make sure the cover is flat - they get distorted from over-tightening.
Grab some 320 or 400-grit, place on a dead flat surface, and rub the cover across it.
It'll be easy to see if it's flat, and/or when you get it that way.



I agree, I've had to file many accelerator pump covers when a new diaphragm wouldn't seal. Common Holley problem.

I love the smell of Deer guts in the morning, it smells like... VICTORY!