Quadrajet problems - Page 2

4543 · 09-21-2017, 11:09 AM

Check the fuel pressure gauge against a known good one.

Mike Pearson · 09-21-2017, 01:31 PM

Quote:

Originally Posted by MR DERBY CITY

To the best of my knowledge Danny Ashley was the first Q jet builder to use the sliding piece that the rods fit through. Most builders use tape or a piece of foam. That sliding piece can move when changing rods so this is an excellent observation Mr. Hacksaw...I sure miss Danny, what a wonderful man....

Danny did some beautiful work on Q jets.

Terry Cain · 09-29-2017, 09:17 AM

Tighten air flap spring just a hair and see if that helps.

Jim Kaekel · 09-29-2017, 09:36 AM

Quote:

Originally Posted by mike pearson

danny did some beautiful work on q jets.

x2!

ChevelleStocker · 10-04-2017, 03:06 PM

How much fuel pressure do you guys suggest for a Quadrajet?
I spent a few race weekends this year struggling with the hesitation issue and couldn't find out what was the problem. So now I'm wondering if too high fuel pressure could cause this issue as we raised it a little during last summer.

Hacksaw · 10-04-2017, 03:51 PM

Iv'e had more than one "carb guy" tell me that 5.5 lbs of fuel pressure is max.

Mike Pearson · 10-04-2017, 04:36 PM

Quote:

Originally Posted by Hacksaw

Iv'e had more than one "carb guy" tell me that 5.5 lbs of fuel pressure is max.

I run mine a 6 lbs. low pressure and plenty of volume is what is needed on a Q Jet. one gallon in 30 seconds is about the minimum you can get away with.

Future Super Stocker · 10-11-2017, 11:52 AM

Danny Ashley I believe started the slide plate for the secondary rods. But note that the air horn needs to be milled in the area that the slide plate goes
.

09-21-2017, 11:09 AM	#1
4543 Senior Member Join Date: Apr 2005 Location: Texas Posts: 644 Likes: 63 Liked 648 Times in 140 Posts	Re: Quadrajet problems Check the fuel pressure gauge against a known good one.

09-29-2017, 09:17 AM	#3
Terry Cain Senior Member Join Date: Feb 2008 Location: Georgetown, Indiana (close to Louisville, KY) Posts: 778 Likes: 530 Liked 231 Times in 107 Posts	Re: Quadrajet problems Tighten air flap spring just a hair and see if that helps. __________________ Terry Cain ???? STK tcain19689585@gmail.com

10-04-2017, 03:06 PM	#5
ChevelleStocker Junior Member Join Date: Jul 2013 Location: Vantaa, Finland. Posts: 23 Likes: 0 Liked 35 Times in 3 Posts	Re: Quadrajet problems How much fuel pressure do you guys suggest for a Quadrajet? I spent a few race weekends this year struggling with the hesitation issue and couldn't find out what was the problem. So now I'm wondering if too high fuel pressure could cause this issue as we raised it a little during last summer. __________________ K/S #570 '74 Chevrolet Malibu Classic

10-04-2017, 03:51 PM	#6
Hacksaw Senior Member Join Date: Sep 2016 Posts: 886 Likes: 209 Liked 314 Times in 177 Posts	Re: Quadrajet problems Iv'e had more than one "carb guy" tell me that 5.5 lbs of fuel pressure is max.

10-11-2017, 11:52 AM	#8
Future Super Stocker Junior Member Join Date: Aug 2013 Posts: 53 Likes: 1 Liked 3 Times in 3 Posts	Re: Quadrajet problems Danny Ashley I believe started the slide plate for the secondary rods. But note that the air horn needs to be milled in the area that the slide plate goes .