Why does my Holley 0-80457s 600cfm not idle?
Why does my Holley 0-80457s 600cfm not idle? I just installed a refurbished Holley 0-80457S 600CFM carburetor on my 1968 Mustang 289 with Auto Transmission and I can't get it to idle properly. If I increase the curb idle to where it will stay running it is way to high rpm. Can a 600 cfm carb set curb idle? Still having the same problem. The carb idles fine while warming up, but when choke is open & engine is hot, still cannot set curb idle. What kind of carburetor won't idle a 1968 Mustang? Thread: 80457S 600 CFM won't idle!...