Quadrajet Problem Solving > Dialing in your rebuilt Quadrajet carburetor

Setting up the new carb--pointers?

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Cliff Ruggles:
Did you adjust the idle mixture screws to give it some more idle fuel.  If it has nozzle drip, it's not completely on the idle curcuit.  Usually this means it's to lean, or needs some bypass air, or both....Cliff

F250 Restorer:
I'll try to back out the mix screws past where I normally would, and see it that stops the surging and the nozzle drip.

If that doesn't help, should I remove the restrictions in the bypass air that I got from you?  Because with the main bypass holes now plugged, I don't know how to get the carb more air.

Thanks.

I should mention that the only vacuum line I have connected why trying to tune it is the pcv line.

Cliff Ruggles:
Are you using vacuum advance?  It should be hooked up when tuning....Cliff

F250 Restorer:
How do I get it more air and make it stop surging? You said when it is pulling fuel from the boosters it is a sign it needs more air and could be lean too. 

Should I remove your restrictions I placed in the air bypass?

Should I drill out the idle tube restrictions and/or the mix screw holes? 

Thank you.

F250 Restorer:




Now that I have plugged the idle bypass air holes in the throttle body, should I remove these restrictions to supply more air?

BTW, I did drill the mix holes slightly.

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