Quadrajet Problem Solving > Diagnose a Quadrajet carburetor problem

17084226 APT adjustment

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Kenth:
I would use .070" lower idle air bleeds, .095"-.100" idle bypass air and .095" idle needle holes.
Also, the total timing is in too early, i would delay to 3500-4000 rpm´s, using 12-16° vacuum advance.

HTH

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