Quadrajet Problem Solving > Diagnose a Quadrajet carburetor problem

Floppy Choke Plate

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Brett Slater:
Good to know. Thanks!

Which one of those is for the Buick, the bottom?

Kenth:
Yes, the bottom one is for Buick.

Brett Slater:

--- Quote from: Kenth on May 21, 2020, 06:56:00 AM ---Looks like you have a 1971-72 bimetal choke unit on intake, this works the same as OEM Buick.
But the choke rod seems to be the short Chevy, Pontiac, Olds style with one bend at middle of rod.
Buick and Cadillac uses a longer choke rod to the blade with two bends that is adjustable at the upper bend.
BTW, you will do fine w/o the secondary pull-off with primary pull-off adjusted as needed.

--- End quote ---

How would this novice achieve getting the choke to work properly without the secondary pulloff?

Kenth:
Without the secondary pull-off, which is a part of "choke delay system", i would set the primary pull-off at .250" to start with.
With cold engine close the choke, seat vacuum break using outside vacuum source, rod in bottom of slot at choke valve shaft, gauge between air horn and lower edge of choke valve.

Brett Slater:

--- Quote from: Kenth on May 21, 2020, 06:56:00 AM ---Looks like you have a 1971-72 bimetal choke unit on intake, this works the same as OEM Buick.
But the choke rod seems to be the short Chevy, Pontiac, Olds style with one bend at middle of rod.
Buick and Cadillac uses a longer choke rod to the blade with two bends that is adjustable at the upper bend.
BTW, you will do fine w/o the secondary pull-off with primary pull-off adjusted as needed.

--- End quote ---

You nailed it. Good eye!

I tinkered with it today and added the secondary pull off. Also, tweaked that choke rod and realized even after that it was still too short which makes a lot of sense now.

Just ordered the correct one depicted in the bottom picture you previously posted. Thanks again!

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