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Adjusting Idle Mixture Screws Does Nothin - Quadrajet

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11-13-2014, 10:28 PM	#1
Gregski Post Whore Join Date: Aug 2014 Location: Sacramento, CA Posts: 10,868	Adjusting Idle Mixture Screws Does Nothin - Quadrajet after rebuilding my Rochester Quadrajet 4MV I wanted to adjust the idle mixture screws, YouTube says to adjust by RPM or vacuum, well nothing happens when I screw the screws in or out, no change in RPM speed what could it be? it could be a poorly adjusted choke it could be a vacuum leak anything in particular I should check and how 1974 GMC 1/2 ton manual 350 V8 all stock

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