Quadrajet Problem Solving > Diagnose a Quadrajet carburetor problem

Sudden extreme rich condition

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MP81:
The linkage coming out of the pull-off (I think) seemed extraordinarily sloppy when I was playing around with the carb the last time...I don't recall it having so much play before, but I can't say for certain that I messed around with it prior.

429bbf:
did you somehow unplug the choke ? once you take the air cleaner off and fire up the car you will know soon whats wrong open the choke by hand with it running and the car should run fine .turn the key on for 1 minute before you start the car and the choke should start to open a little if its working correctly.if its working and you start the car and it doesn't open all the way in say 3 minutes depending how cold it is.ether the pullout is bad or your vacuum hose going to it is unplugged or bad .fwiw

MP81:
Didn't unplug it - I did check that. I crimped on a new connector (the stock one was long gone) after putting the headers on, real tight fit on the spade.

I will check to see if the choke is opening all the way, hopefully this weekend. It'll be in the high 40s so it might take a touch longer.

MP81:
Started it up today - this is as far as the choke blade opened after running for about 5 or 6 minutes. By the time I shut it down, it was idling up near 2k, and revs were real slow to come down when I did rev it up to try and get it to drop down.

It was still smoking, but didn't seem as bad as the last time, maybe because it was colder out? May have been a placebo effect, too. 

The vac hose is still good between the pull-off and the carb.

Cliff Ruggles:
Replace the electric choke.  It should be fully open in about 2-3 minutes.  We have USA made ones on the website, and they come with a new connector for the wiring harness......Cliff

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