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Re: quadrjet adjusting
A non-electric Q-jet has very few adjustments.
First thing is to make sure the engine specs (timing, valve adjustment) are correct.
Then check and confirm there are no vacum leaks.
I set the idle mixture screws (2 small screws at the bottom front of the carb to 3 turns out and begin my adjustments from there..turn them equally and in small increments (1/4 each) and allow the engine to stabilize before turning them again.
I do this by sound, but you can use a vacum guage to determine when the adjustment is correct.
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