Re: Quadrajet help
Spray carb cleaner around the primary throttle shaft on the driver's side and see if the idle speed changes. You likely have a worn bore where the throttle shaft goes through the base plate. If there is a vacuum leak there, it will be covered up by the richer mixture when it is on the choke.
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~Steven
'70 Chevy 3/4T Longhorn CST 402/400/3.56 Custom Camper
Simi Valley, CA
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