Editing Holley accelerator pump (section)
Jump to:
navigation
,
search
====Repairing the check valve seat==== '''''Both''''' the check valves have to seal well or there won't be an immediate discharge from the shooter. The check valve '''seat''' under the squirter can often be repaired if it has an imperfection that prevents it from sealing properly. If you have a used check ball or 'pin' of the same type your carb uses, you can use it to carefully reform the seat in the carb body casting. You place the check ball/pin down into the hole, then using a long, thin, flat-ended punch, ''gently'' tap the check with a small hammer. This will remove any raised edges or whatnot that may be causing the check to not seat tightly. Under the pump diaphragm, if you have the rubber umbrella, be sure that it is still very pliable and the sealing surfaces on the carb as well as the umbrella are smooth and defect-free. If there's any doubt at all, simply replace the old check valve with a new one. It's a good idea to do this any time the pump is apart. If it has the older "ball and bail" style check valve, use the same procedure as for the under-nozzle check valve to re-form the ball seat. Removing and replacing the bail is no fun, and must be done very carefully so as to maintain the slight bend in the bail. It's best to re-peen the metal to secure it back into place. Only do this repair if it's necessary. [[File:2acc pumpcheck.jpg|thumb|left|500px|The two types of check valves found under the diaphragm: Ball and bail on left, umbrella on right, from bob2000.com]] <br style="clear:both"/> Here is a [http://www.youtube.com/watch?v=dW6YGxVTW5Y Holley accelerator pump video]
|
Editing help
(opens in new window)
Personal tools
Log in / create account
Namespaces
Page
Discussion
Variants
Views
Read
Edit
View history
Actions
Search
Navigation
Main Page
Recent changes
Random page
Help
All articles
Start a new article
Hotrodders forum
Categories
Best articles
Body and exterior
Brakes
Cooling
Electrical
Engine
Fasteners
Frame
Garage and shop
General hotrodding
Identification and decoding
Interior
Rearend
Safety
Steering
Suspension
Tires
Tools
Transmission
Troubleshooting
Wheels
Toolbox
What links here
Related changes
Special pages
Terms of Use
Copyright
Privacy Policy
Your Privacy Choices
Manage Consent