The 1947 - Present Chevrolet & GMC Truck Message Board Network - View Single Post

geezer#99 · 11-01-2020, 07:30 PM

Yup!
Vac advance pot is good.
Leave it hooked up there and turn your idle down to 700 or lower.
See if your idle screw can be backed out enough not to make contact.
Try that.

11-01-2020, 07:30 PM	#60
geezer#99 Registered User Join Date: Aug 2009 Location: Bowser Posts: 13,515	Re: Spark plug diagnosis Yup! Vac advance pot is good. Leave it hooked up there and turn your idle down to 700 or lower. See if your idle screw can be backed out enough not to make contact. Try that.