Quadrajet Problem Solving > Diagnose a Quadrajet carburetor problem

Idle Air Bypass

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59bluesilver:
I would like to temporarily block the idle air bypass to see if that will help my idle. Can you tell me how to do that, with pics if possible?

bry593:
My idle bypass measured .098".  If yours are close to this size, a brass 1/8 setscrew (#8-32) could be used.  I don't know if you can get these at ACE Hardware, but you can get a pair from Cliff.

77cruiser:
Take the baseplate off & plug the vertical holes.

http://www.wallaceracing.com/Adjustable_bypass_with_wrench_small.jpg

carmantx:
What quadrajet do you have?

You can plug the passages in the main body also to block the bypass air.

My guess is you have other issues to deal with for idle problems.  You can post your engine build and your quadrajet specs and get better information.

DrSpencer:
Hello Cliff-The high temp RTV that I initially used to plug the idle bypass holes has softened over time, causing the carb not to idle properly, once again.

What material do you suggest I use to plug the idle bypass holes? Would JB Weld be sufficient?

Thanks

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