Quadrajet Problem Solving > Diagnose a Quadrajet carburetor problem

Q-jet won't idle when engine warms up

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429bbf:
ok theres a lot confusing stuff here . you say you have a e4mc carb but you have no computer to it . how are you controlling the metering rods? second ques. are you holding the choke open ?if your holding the choke open you coil in the choke could be bad if both pull offs are working . you don't need both but the rear one may control the opening of the secondaries. little more info needed. hth

Greg Kennedy:
I suspect my 1981 Toro  was built at the very beginning of the 1981 production cycle, because it has NO electronics or wiring going to it. I have another 1981 Toro parts car that does have the electronic carb bits, so I do know the difference.

My secondaries are staying firmly shut, no air leaks there. When I last had the carb apart a couple of weeks ago, I made sure the float was properly adjusted, that the metering rods were smooth and not sticking, etc.

Is it possible somebody put an older carb on my car somewhere back in its history?

I will get the carb number and post it here shortly; maybe that will help.

Thanks so much for your help so far; very much appreciated.

carmantx:
My post said float, but I meant choke.  Make sure choke is full open when engine is warm.  If you have to hold it open, then it is either not set correctly, or element is not functioning properly.

Greg Kennedy:
Thank you Carmantx. Here are photos of both sides of my carburetor.

Its number is .... 17081282.

I'm suspecting more and more the choke coil is shot, or set incorrectly. I have moved it about with different adjustments, but no success so far in sustaining a low-rpm idle.

Greg Kennedy:
Now this is getting really bizarre.
I looked up my carb number 17081282 only to be told by one website that it's from an 81-86 Chev/GMC/Truck and should have an electric choke -- which mine does not.
Maybe my carb's a 'transplant' from a truck..... a R4-M4ME.
Hmmmmmm.... any thoughts?

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