Quadrajet HELP

Footbrake · 05-02-2009, 08:23 AM

First time out last night and it's stumbled bad out of the gate. I did nothing to it since last year. So I know the secondary air flap is set right. Did this all 3 time trials. Could the accelerater pump have gone bad over the winter? even at 50 mph it will stumble when I mash it.

Danny Ashley · 05-02-2009, 12:48 PM

If your Q-Jet was dry over the winter and has a black pump cup, then yes , this could be your problem. You should replace it with one that has a blue cup such as the Edelbrock #1982. Danny

Danny Ashley · 05-02-2009, 12:51 PM

Hey Al, I guess we were typing our replys at the same time. LOL. Danny

455 · 05-03-2009, 10:00 AM

You can also check the adaquacy of both primary shots from the accelerator pump as you manual move the throttle to confirm if the circuit is working or not.

njk53 · 05-03-2009, 07:31 PM

Where are you guys buying your parts for a Q-Jet?

Footbrake · 05-04-2009, 12:42 PM

Overlooked a real simple thing right in front of my eyes. The little curved"S" shaped hose that goes from the vacuum port on the carb to the pull off was disconected. The way it was resting it looked like it was still on. Hooked it back up and no more stumble. Thanks for all the help anyway. the way it was acting I would have bet anything it was the acc. pump

05-02-2009, 12:48 PM	#2
Danny Ashley Member Join Date: Nov 2001 Location: Marion,In. Posts: 267 Likes: 60 Liked 110 Times in 29 Posts	Re: Quadrajet HELP If your Q-Jet was dry over the winter and has a black pump cup, then yes , this could be your problem. You should replace it with one that has a blue cup such as the Edelbrock #1982. Danny

05-02-2009, 12:51 PM	#3
Danny Ashley Member Join Date: Nov 2001 Location: Marion,In. Posts: 267 Likes: 60 Liked 110 Times in 29 Posts	Re: Quadrajet HELP Hey Al, I guess we were typing our replys at the same time. LOL. Danny

05-03-2009, 10:00 AM	#4
455 Junior Member Join Date: Feb 2009 Posts: 18 Likes: 0 Liked 0 Times in 0 Posts	Re: Quadrajet HELP You can also check the adaquacy of both primary shots from the accelerator pump as you manual move the throttle to confirm if the circuit is working or not.

05-03-2009, 07:31 PM	#5
njk53 Senior Member Join Date: Jul 2007 Location: East China, MI Posts: 504 Likes: 0 Liked 0 Times in 0 Posts	Re: Quadrajet HELP Where are you guys buying your parts for a Q-Jet? __________________ Nelson Kowal Stock 345

05-04-2009, 12:42 PM	#6
Footbrake Junior Member Join Date: Dec 2007 Location: Tonawanda, N.Y. Posts: 35 Likes: 0 Liked 0 Times in 0 Posts	Re: Quadrajet HELP Overlooked a real simple thing right in front of my eyes. The little curved"S" shaped hose that goes from the vacuum port on the carb to the pull off was disconected. The way it was resting it looked like it was still on. Hooked it back up and no more stumble. Thanks for all the help anyway. the way it was acting I would have bet anything it was the acc. pump

05-02-2009, 08:23 AM	#1
Footbrake Junior Member Join Date: Dec 2007 Location: Tonawanda, N.Y. Posts: 35 Likes: 0 Liked 0 Times in 0 Posts	Quadrajet HELP First time out last night and it's stumbled bad out of the gate. I did nothing to it since last year. So I know the secondary air flap is set right. Did this all 3 time trials. Could the accelerater pump have gone bad over the winter? even at 50 mph it will stumble when I mash it.