Carburetors Carb discussion and questions. Upgrading your Third Gen's carburetor, swapping TBI to carburetor, or TPI to carburetor? Need LG4 or H.O. info? Post it here.

NON-CC Quadrajet issue

Thread Tools
 
Search this Thread
 
Old Feb 21, 2010 | 06:48 PM
  #1  
RITTER's Avatar
Thread Starter
Member
iTrader: (5)
 
Joined: May 2005
Posts: 368
Likes: 0
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?
Reply
Old Feb 21, 2010 | 07:54 PM
  #2  
Apeiron's Avatar
Moderator
 
Joined: Jan 2000
Posts: 20,981
Likes: 11
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

Is the choke open?
Reply
Old Feb 21, 2010 | 08:07 PM
  #3  
RITTER's Avatar
Thread Starter
Member
iTrader: (5)
 
Joined: May 2005
Posts: 368
Likes: 0
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
Reply
Old Feb 21, 2010 | 08:22 PM
  #4  
Apeiron's Avatar
Moderator
 
Joined: Jan 2000
Posts: 20,981
Likes: 11
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.
Reply
Old Feb 22, 2010 | 02:27 PM
  #5  
RITTER's Avatar
Thread Starter
Member
iTrader: (5)
 
Joined: May 2005
Posts: 368
Likes: 0
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.
Reply
Old Feb 22, 2010 | 02:43 PM
  #6  
Apeiron's Avatar
Moderator
 
Joined: Jan 2000
Posts: 20,981
Likes: 11
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

Have you tried setting the idle mixture with a vacuum gauge?
Reply
Old Feb 22, 2010 | 03:17 PM
  #7  
RITTER's Avatar
Thread Starter
Member
iTrader: (5)
 
Joined: May 2005
Posts: 368
Likes: 0
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?
Reply
Old Feb 22, 2010 | 03:43 PM
  #8  
RITTER's Avatar
Thread Starter
Member
iTrader: (5)
 
Joined: May 2005
Posts: 368
Likes: 0
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
Reply
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
Bubbajones_ya
Cooling
24
Jul 6, 2024 08:32 PM
MM2Robinson
Electronics
39
Oct 1, 2017 09:16 AM
nova983
European Region
6
Nov 2, 2015 12:15 PM
TheTraut88
TPI
6
Sep 11, 2015 05:16 AM
Fronzizzle
Electronics
3
Sep 8, 2015 12:10 PM




All times are GMT -5. The time now is 08:38 AM.