1. Home
  2. Technical
  3. HOLLEY Carburetor Technical
  4. Holley 4180 Technical
  5. Questions & Answers
I have a Holly 4180 carb that has had a leak at the accelerator pump area. I ordered a diaphragm from you(Appreciate the fast service) and it still leaks. Is the cover that sensitive to leaks? I don't see any cracks or such. Appreciate help and if a replacement cover will correct.

The cover gets warped. Sandwich the cover in a vice and apply some heat to it. Tighten the vice a bit so that it becomes flat. Allow to cool.

You can also file a bit at each corner where the screw goes in. It will be high there.

Can't find what you need? Contact Us