NON-CC Quadrajet issue
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From: Mooresville, NC
Car: 1983 Buick Regal
Engine: 355
Transmission: TH350
Axle/Gears: 4.11
NON-CC Quadrajet issue
I just rebuilt my first quadrajet #17058213

Cleaned everything very good and replaced all parts included in the rebuild kit. Mounted the carburetor on my engine and pulled the slow idle adjustment screws out 1 1/2 turns and the engine fired right up with no problem. It seems to run just fine.
The problem is that it has like no power. I removed a CC quadrajet that I have been running for the past month with no issues (absolutely no wires or computer hooked to it) and it had a whole lot more power with the CCC (got horrible fuel mileage)

What could my problem be?

Cleaned everything very good and replaced all parts included in the rebuild kit. Mounted the carburetor on my engine and pulled the slow idle adjustment screws out 1 1/2 turns and the engine fired right up with no problem. It seems to run just fine.
The problem is that it has like no power. I removed a CC quadrajet that I have been running for the past month with no issues (absolutely no wires or computer hooked to it) and it had a whole lot more power with the CCC (got horrible fuel mileage)

What could my problem be?
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From: Mooresville, NC
Car: 1983 Buick Regal
Engine: 355
Transmission: TH350
Axle/Gears: 4.11
Re: NON-CC Quadrajet issue
It is all hooked up, I will admit that I didn't check it to be sure that it works. Will check that tomorrow
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From: Mercedes Norte, Heredia, Costa Rica
Car: 1984 Z28 Hardtop
Engine: 383 Carb
Transmission: 4L60
Axle/Gears: 3.54 Dana 44
Re: NON-CC Quadrajet issue
1 1/2 turns out is pretty lean for an emissions-era Qjet with the long tapered idle adjustment screws. I wouldn't be surprised if it was getting its fuel because the choke is closed. Having the choke closed will also restrict air flow through the primaries, and keep the secondary air door from opening at all.
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Joined: May 2005
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From: Mooresville, NC
Car: 1983 Buick Regal
Engine: 355
Transmission: TH350
Axle/Gears: 4.11
Re: NON-CC Quadrajet issue
Alright, I brought the slow idle mixture screws out another full turn, so they now sit at 2 1/2 turns (seems to idle a little better in gear now) but the slow idle mixture is just that, it only controls the mixture at a sitting idle right?
The choke is opening just fine on it, so we'll scratach that. I took it out for a good hard test drive, the rolling WOT is just fine, secondaries open up and it gets going real good.
Its the throttle response and from a stop accelleration that is horrible.
The choke is opening just fine on it, so we'll scratach that. I took it out for a good hard test drive, the rolling WOT is just fine, secondaries open up and it gets going real good.
Its the throttle response and from a stop accelleration that is horrible.
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iTrader: (5)
Joined: May 2005
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From: Mooresville, NC
Car: 1983 Buick Regal
Engine: 355
Transmission: TH350
Axle/Gears: 4.11
Re: NON-CC Quadrajet issue
Not to sure how to do that? I thought the idle mixture screws have nothing to do with driving performance?
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Thread Starter
Member
iTrader: (5)
Joined: May 2005
Posts: 368
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From: Mooresville, NC
Car: 1983 Buick Regal
Engine: 355
Transmission: TH350
Axle/Gears: 4.11
Re: NON-CC Quadrajet issue
So I did some research on the carburetor that was the engine, 17085210, apparently it is not a CCC. From what I read about it, it is just a dual capacity pump. Is there a way to wire this plug to work from my tempurature sending unit
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