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Thread: Quadrajet stumble

  1. #1

    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?

  2. #2
    Senior Member RACING JUNKIE TheYellaBrick's Avatar
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    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' !!!
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  3. #3

    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

  4. #4
    Senior Member RACING JUNKIE
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    Re: overlooked something

    Quote 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!
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  5. #5
    Senior Member EXPERT BUILDER
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    What has changed other than the carb?
    The quadrajet operates off of Vacuum...

  6. #6
    Senior Member SENIOR BUILDER
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    i figured out ur problem.... its a quadrajet get a damn holley and u wont be seeing no carb problems in the future :!: :!: :!: :!: :!: haha

  7. #7
    Senior Member RACING JUNKIE mopar1968's Avatar
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    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 :!: :!:

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  8. #8
    Senior Member SENIOR BUILDER
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    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

  9. #9
    Senior Member RACING JUNKIE
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    Now thats some funny Sh*t......Old Worn Out Mopar Man.
    Kinda has a certain jingle. :lol: ops: :lol:

  10. #10
    Senior Member RACING JUNKIE
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    OLD WORN OUT MOPAR MAN :!: :lol: :lol: SOUNDS LIKE A GREAT NAME TO PUT ON THE DOOR OF THE CAR :P :P


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