I just reinstalled my Zenith carb back on my truck after having it off for 3 years. It will not idle down. Runs really fast probable 2500 rpms.
I did not try to rebuild it. I did adjust the float to 1 1/2 inches.
Where do I start to get it to idle and run correctly?
the motor is a '55 GMC 270, the carb is the factory one.
carb tag

Last edited by Wayne67vert; 02/17/2026 9:09 PM. Reason: spelling
Wayne
1938 1-Ton Farm Truck
Stovebolt Gallery Forums
1989 Silverado
1996 Mustang GT convertible
When I die, I hope she doesn't sell everything for what I told her I paid for it!