Cliff's Quadrajet Parts and Rebuild Kits
Quadrajet Problem Solving => Dialing in your rebuilt Quadrajet carburetor => Topic started by: oktorque on January 14, 2015, 09:27:36 PM
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I have another thread: Sucking fuel from boosters. That is resolved. I have a 17059272 with cliff's kit and using his #1 recipe. But it ran terrible, surging, couldn't get it to idle, so I enlarged the idle tube to 44, the down ilde to 54, and the upper idle bleed to 72, lower idle bleed to 72. Got idle, but when I put it in gear it clugs and I can't figure out why. It has tremendous throttle response, but if I get on it it pings.
The float is set to about 3/8". I'm using 72 jets with 41p rods.
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Zero response.
Okay, I think this is two problems: Something is amiss with the idle circuit, and, I believe/guess, the engine is starving for fuel when I get on it. Didn't ping with previous QJ. Dizzy is freshly recurved, advance dialed in.
Solutions: The only thing I can think of in idle circuit is a possible issue with the down restriction. I removed them and installed Cliff's, but on one I could not get the remaining ring of the restriction out after drilling. When I installed the new one maybe that ring became a hindrance? That would account for why the mix screws adjust diff. with vacuum gauge?
I'll also try, for the power mode, changing the jets to a 74 with a 44 or 45p rod with taper.
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Why did you open the bleeds? If you think you are too lean, that's counter productive IMO.
What does your timing curve look like?