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Rebuilt my Q-jet, need some help now.

1083 Views 12 Replies 4 Participants Last post by  SWHEATON
I rebuilt my Quadrajet to Cliff's specs for my car(Trans-am). I believe the float is set right. Its got a Carter 120gph fuel pump. New jets and rods. New accel. pump, basically all new inside.
When I first started driving it would buck when trying to cruise at light throttle. I turned to APT screw out until that quit.
The problem I am having is with the Secondaries. If I drive along at 30 in first gear it will spin the tires like crazy, but then if I shift into second and get back on it, it bogs. Or if I try to punch it in 2nd or 3rd gear at say 2500rpm it will bog but it sounds like the secondaries are opened, then when it gets up around 4 or 5K it will pull like a freight train. The same happens in 4th at 3000rpm.

Would the spring that controls the butterflies in the air horn need tightened more? Or would it be the choke pull off the lets them open, Cliff gave me a new pull-off in the kit. Any suggestions? It gets very expensive testing this at $4.30/gal for premium. Fun,:) But expensive.:(
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The secondary rods were turned on Cliff's lathe, not sure of the size. As for mods at the pull over circuit you have me confused.
Thanks, I'll have to check on everything. Cliff ask everything about my car and sent me parts to match it. Are you talking about the holes just above the the butterflies in the front of the secondaries, if so I didn't touch those.
The spring on the secondary might not be adjusted right. Also, what size hole should the discharge pump hole be opened too? Would a large restriction allow it to open to fast? It probably opens twice as fast as the one that came on the carb stock. Thanks.
Thanks for the input guys, I think I only tightened the screw about 3/8 or 1/2 a turn when I rebuilt it.:clonk: Should I try putting the old pull-off back on?
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