quadrajet problem

rjarrell · 03-29-2010, 03:51 PM

did not rebuild carb myself
was sent to the Toronto area, to a company that rebuilds carbs.
Just making sure i cover all bases before i send it back.
I have also been told it could be a low vacuum problem, or a
fuel pressure prob. will check it out first. Thank's for the help.

Mike Savelle · 03-29-2010, 04:07 PM

had the same problem . replace the float with a new one

Bob Pagano · 03-29-2010, 04:28 PM

Check fuel pressure, some will piss by with over 6-7 lbs

GTX JOHN · 03-30-2010, 12:12 PM

If you are going to race your car, the carb requires a fair amount of specialized mods. You didn't say if you used a generic rebuilder or race specialist. It could certainly be a simple fix as suggested and probably is.....I have found it a really challenge to make Stock/SS car idle (low vacume/lots of overlap in cam). Danny Ashley is the one that I recommend to rework one....very approachable and patient with me: #1 in my book!

tj310 · 03-31-2010, 11:00 AM

Everybody has their stories. I have found that a pure stock Quadrajet may work fine on a 10 sec superstocker...Thanx Trevor

Run to Rund · 03-31-2010, 12:25 PM

Two likely things are stated above: excessive fuel pressure to the carb, and a bad float or needle valve. Another possibility is leaky plugs on the bottom of the fuel bowl. you have to remove the throttle body to see them.

03-29-2010, 04:07 PM	#2
Mike Savelle Member Join Date: Dec 2001 Location: Ontario Canada Posts: 369 Likes: 125 Liked 7 Times in 5 Posts	Re: quadrajet problem had the same problem . replace the float with a new one

03-29-2010, 04:28 PM	#3
Bob Pagano VIP Member Join Date: Jun 2002 Location: New Holland, PA Mooresville,NC Posts: 1,163 Likes: 241 Liked 16 Times in 11 Posts	Re: quadrajet problem Check fuel pressure, some will piss by with over 6-7 lbs __________________ Bob Pagano A/SA

03-30-2010, 12:12 PM	#4
GTX JOHN VIP Member Join Date: Jun 2009 Location: Boulder City, Nevada 89005 Posts: 2,733 Likes: 2,802 Liked 2,486 Times in 697 Posts	Re: quadrajet problem If you are going to race your car, the carb requires a fair amount of specialized mods. You didn't say if you used a generic rebuilder or race specialist. It could certainly be a simple fix as suggested and probably is.....I have found it a really challenge to make Stock/SS car idle (low vacume/lots of overlap in cam). Danny Ashley is the one that I recommend to rework one....very approachable and patient with me: #1 in my book!

03-31-2010, 11:00 AM	#5
tj310 Member Join Date: Sep 2009 Location: Dresden On. Canada Posts: 460 Likes: 0 Liked 0 Times in 0 Posts	Re: quadrajet problem Everybody has their stories. I have found that a pure stock Quadrajet may work fine on a 10 sec superstocker...Thanx Trevor

03-31-2010, 12:25 PM	#6
Run to Rund Senior Member Join Date: Sep 2007 Location: Henderson, NV Posts: 583 Likes: 8 Liked 54 Times in 27 Posts	Re: quadrajet problem Two likely things are stated above: excessive fuel pressure to the carb, and a bad float or needle valve. Another possibility is leaky plugs on the bottom of the fuel bowl. you have to remove the throttle body to see them.

03-29-2010, 03:51 PM	#1
rjarrell Junior Member Join Date: Mar 2010 Posts: 2 Likes: 0 Liked 0 Times in 0 Posts	Re: quadrajet problem did not rebuild carb myself was sent to the Toronto area, to a company that rebuilds carbs. Just making sure i cover all bases before i send it back. I have also been told it could be a low vacuum problem, or a fuel pressure prob. will check it out first. Thank's for the help. Last edited by rjarrell; 03-29-2010 at 03:55 PM.