Quadrajet Problem Solving > Dialing in your rebuilt Quadrajet carburetor
17059272 on a ford 300
F250 Restorer:
Cliff-- This carb came with two v. pull offs, one at rear, and one in front. Do I need both? I'm having a bit of trouble with the choke.
Also, the electric bulb mounted for for throttle shaft, what is that? How would I set it up in an older vehicle?
Thank You.
Cliff Ruggles:
The rear pull-off is not needed, it is just a back-up for the front pull-off.
Don't know what an "electric bulb" is? Fast idle solenoid for the A/C???.....Cliff
F250 Restorer:
Thanks, Cliff.
Recently I removed the carb. I have a dual port manifold that separates the pri. from the sec. side of carb. I noticed that inside the secondary channel/runner it was wet. I still have the cross drilled nozzles. The secondaries don't open until really getting on it with pedal to the floor, and come on briefly, then the trans shifts.
Since this is an auto trans, If I tighten the air flap control, they would barely open b/f the trans shifts.
I have the CH rods, and the M hanger. Advice?
Shark Racer:
Your comment on the manifold confuses me; dual ports that separate the primaries from the secondaries in the manifold? If this is the case, then you'd have to have two sets of intake runners to each cylinder, one for primary feed and one for secondary feed...
Is there any chance you can post pictures of this setup?
Cliff Ruggles:
The adjustment spring for the secondary airflap is used to get smooth transition and help prevent stumble/bog from having them come in too early. The choke pull-off is also a player here, as it holds the flaps tightly shut at idle and cruising and helps prevent them from "whipping" open too quick causing a lean condition (bog). Winding the spring too tight hurts engine power and performance. With the right pull-off, the secondary spring should be about 1/2 to 3/4 turns clockwise after it contacts the pin.
If you have modified the opening angle of the secondary airflap on the 301 carburetor, then it needs solid secondary fuel nozzles, or there will be fuel distribution problems when the secondaries are used.......Cliff
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