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Old 06-11-2019, 10:16 AM   #2
Steeveedee
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Join Date: Jan 2013
Location: Simi Valley, CA
Posts: 10,088
Re: Erratic engine idle 72 350

Try a stronger throttle return spring. Also, check the throttle shaft for slop. If it's an Edelbrock, you even have to check the passenger's side of the throttle shaft.
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'70 Chevy 3/4T Longhorn CST 402/400/3.56 Custom Camper

Simi Valley, CA
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