Cliff's Quadrajet Parts and Rebuild Kits

Quadrajet Problem Solving => Diagnose a Quadrajet carburetor problem => Topic started by: 71silverstar on January 20, 2025, 04:03:43 PM

Title: Fast idle cam kickdown on 7041267
Post by: 71silverstar on January 20, 2025, 04:03:43 PM

I've got an operational question regarding the fast idle cam.
I've got 7041267 on a 71 T/A. 
Is the cam supposed to fall on its own as the choke warms?
Or are you supposed to have to tap the throttle to release the pressure from the cam follower on the fast idle cam steps?
I've seen a couple manuals that say the engine should slow down as it warms...BUT, that might be on newer carbs.  I don't see any mechanism other than gravity that would help push that cam down as the choke coil lever pulls down.
Thx!

Title: Re: Fast idle cam kickdown on 7041267
Post by: Kenth on January 21, 2025, 12:24:11 AM

Tap the throttle and the fast idle cam will fall on its own in steps during engine heat up.

Title: Re: Fast idle cam kickdown on 7041267
Post by: 71silverstar on January 21, 2025, 04:32:51 AM

OK, so no automatic pull down from the choke rod as it heats up.
I had a feeling it was probably too old for tricks like that.
Thank you!

Title: Re: Fast idle cam kickdown on 7041267
Post by: Kenth on January 21, 2025, 07:09:44 AM

A working choke pull-off and rod to the air valves will help the fast idle cam to the first lower step.