Quadrajet stumble

Old 05-02-2009, 02:37 AM
  #1  
footbrake
Junior Member
SHOW GUEST
Thread Starter
 
Join Date: Oct 2003
Posts: 5
Default Quadrajet stumble

First time out last night since last year. Car has a huge stumble coming out. 3 time runs,3 stumbles. Nothing was changed on the carb and the secondary air valve is set as it was last year. Even driving on the thruway at 60 and mashing it, it stumbles. Driving it on the street there's no problem It doesn't stumble under normal acceleration, but only at W.O.T.. Could this still be the accelerator pump after sitting all winter?
footbrake is offline  
Old 05-02-2009, 08:00 AM
  #2  
TheYellaBrick
Senior Member
RACING JUNKIE
 
TheYellaBrick's Avatar
 
Join Date: Mar 2008
Location: Emmett, Idaho
Posts: 7,334
Default

If you're running pump gas, the life span is only about 5-6 months. If you had not treated your gas and then run the engine long enough to get that treated gas up into the carb, you could have varnish built up in the carb ports. Another issue could be an accel pump rubber breakdown with the added ethenal required now days. Either way I'd be doing a super clean and rekit with updated rubber parts. HAVE FUN RACIN' !!!
TheYellaBrick is offline  
Old 05-04-2009, 11:12 AM
  #3  
footbrake
Junior Member
SHOW GUEST
Thread Starter
 
Join Date: Oct 2003
Posts: 5
Default overlooked something

Wasn't the acc. pump after all. The little "S" curve piece of rubber tube that goes from the vacuum port on the carb to the pull off was disconected for some reason. The way it was resting made it look like it was connected. Thanks for the help anyway
footbrake is offline  
Old 05-07-2009, 12:27 AM
  #4  
cepx111
Senior Member
RACING JUNKIE
 
Join Date: May 2006
Posts: 2,044
Default Re: overlooked something

Originally Posted by footbrake
Wasn't the acc. pump after all. The little "S" curve piece of rubber tube that goes from the vacuum port on the carb to the pull off was disconected for some reason. The way it was resting made it look like it was connected. Thanks for the help anyway
I hate when that happens!
cepx111 is offline  
Old 05-07-2009, 03:07 AM
  #5  
us7race
Senior Member
EXPERT BUILDER
 
Join Date: Aug 2005
Location: Tell City, IN
Posts: 356
Default

What has changed other than the carb?
The quadrajet operates off of Vacuum...
us7race is offline  
Old 05-17-2009, 08:31 PM
  #6  
justin45
Senior Member
SENIOR BUILDER
 
Join Date: Apr 2009
Location: odessa texas
Posts: 103
Default

i figured out ur problem.... its a quadrajet get a damn holley and u wont be seeing no carb problems in the future :!: :!: :!: :!: :!: haha
justin45 is offline  
Old 05-17-2009, 09:43 PM
  #7  
mopar1968
Senior Member
RACING JUNKIE
 
mopar1968's Avatar
 
Join Date: Dec 2006
Location: Abingdon,Virginia
Posts: 3,579
Default

Aquick lesson ''justin'' he just might be racing in super stock racing where he must run a q-jet, again listen and learn before opening thy mouth :!: :!:

''JUST MY TWO CENT'S WORTH''

http://www.racingjunk.com/profile/163312
mopar1968 is offline  
Old 05-18-2009, 01:46 PM
  #8  
justin45
Senior Member
SENIOR BUILDER
 
Join Date: Apr 2009
Location: odessa texas
Posts: 103
Default

well i figure if he doesnt know bout quadrajets he prolly aint racing in super stock class. so hes prolly just a strret strip racer... so keep ur mouth shut u old worn out mopar man
justin45 is offline  
Old 05-18-2009, 03:25 PM
  #9  
dparker
Senior Member
RACING JUNKIE
 
Join Date: Jun 2003
Location: Hobbs, NM
Posts: 842
Default

Now thats some funny Sh*t......Old Worn Out Mopar Man.
Kinda has a certain jingle. :lol: ops: :lol:
dparker is offline  
Old 05-18-2009, 03:34 PM
  #10  
MEMRACING62
Senior Member
RACING JUNKIE
 
Join Date: Sep 2007
Location: orland pk il
Posts: 2,429
Default

OLD WORN OUT MOPAR MAN :!: :lol: :lol: SOUNDS LIKE A GREAT NAME TO PUT ON THE DOOR OF THE CAR :P :P
MEMRACING62 is offline  

Contact Us Archive Advertising Cookie Policy Privacy Statement Terms of Service