Idle adjustment needle screws

[John C.]

On a carter WCFB carb what is the best way to adjust these screws?

[Duke W.]

Re: Idle adjustment needle screws

What year? There should be a section in the applicable service manual for "idle speed and mixture adjustment". It's usually the same for any carbureted engine, but there should be an initial setting for the mixture screws and an idle RPM target for the specific engine - in neutral for manuals and Drive for automatics. It's 1.5 turns out from the seat of the AFB. I don't remember the initial setting for the WCFB.

Duke

[John C.]

Re: Idle adjustment needle screws

Thanks Duke it's a 59

[John H.]

Re: Idle adjustment needle screws

On a carter WCFB carb what is the best way to adjust these screws?

John -

With a vacuum gauge - warm engine, normal idle speed, adjust the idle mixture screws for highest steady vacuum.