Quadrajet Problem Solving > Diagnose a Quadrajet carburetor problem

Carb Needs

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Cliff Ruggles:
The accellerator pump may be sticking or have other issues.  Drive out the roll pin and remove the pump arm and see if it still "sticks".  We've upgraded the accl pump assemblies several times in the last couple of years, as the manufacturer wouldn't step up quick enough to get us a good product to hold up to this new fuel.  We've only had a couple of pumps fail, and will replace any of them at no cost no matter how long ago we did the work.

Good news is that the new pumps are fine, even in E-85, zero issues and zero failures to date.....Cliff

bigvette1:
Will do and let you know.  If it is the pump mechacism sticking I will mail it back to you for replacement,.  Thanks for the service.
Jim

bigvette1:
Cliff, exactly as you suspected.  I drove out the acc pump arm pin and there is zero drag on the throttle.  Manually push the accelerator pump and you can feel a bind about 3/4's of the way down.  I removed the pump and there does not seem anything wrong with it, but there is something about the bind on the sides of the pump chamber.  I will be shipping the pump to you tomorrow along with a ck for $9 to cover the cost of a new bowl gasket as the one on the carb is getting a little dog eared.  Again the carb is #17059507.

The area I referred to as "looked like it was drilled out" is shown in a picture that is attached.  Oops the pics are too large to send via the forum, so I will attached to your email.   The holes are directly adjecent to the cover screws inside the primary side.  Can you advise what these are.  Thanks again.  Jim

bigvette1:
Cliff, still in a holding pattern due to wet weather.  Installed the new acc pump and gasket.  Will put on the car ASAP and let you know.  Thx.
Jim

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