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.

How do i adjust air fuel ratio on carb

Thread Tools
 
Search this Thread
 
Old Aug 28, 2012 | 08:20 PM
  #1  
Shep5B's Avatar
Thread Starter
Member
 
Joined: Mar 2012
Posts: 117
Likes: 0
From: New York
Car: 1985 IROC-Z H.O. 4bbl
Engine: L69 Small-Block, 305
Transmission: Borg-Warner T5
Axle/Gears: 3.73
How do i adjust air fuel ratio on carb

I have a 1985 iroc 305 H.o... I was wondering how i could change the air fuel ratio on the carb . Because it seems to be. That when i rev the car up and then let go.. It starts to drop in rpms untill it hits zero and then the car shuts off
Reply
Old Aug 28, 2012 | 09:32 PM
  #2  
5spd-iroc's Avatar
Member
10 Year Member
 
Joined: Feb 2011
Posts: 152
Likes: 1
From: Shelby Mt
Car: '85 iroc-'13 powerstroke H&S tuned
Engine: 406 sbc full roller
Transmission: t5 soon to be t56
Axle/Gears: stock
Re: How do i adjust air fuel ratio on carb

i would check your idle adjustment
Reply
Old Aug 28, 2012 | 09:37 PM
  #3  
sonjaab's Avatar
On Probation
15 Year Member
Liked
 
Joined: Apr 2007
Posts: 1,592
Likes: 18
From: Syracuse NY
Car: 84 Z-28
Engine: 305 HO
Transmission: r-700
Axle/Gears: 3:73
Re: How do i adjust air fuel ratio on carb

Also check for a loose idle stop cam or linkage also your idle boost solenoid.
You may just have a vaccum hose leak which also effects idle speed.

The idle mix adjustment screws are "sealed" in the stock Q-jet.
Reply
Old Aug 30, 2012 | 06:14 PM
  #4  
five7kid's Avatar
Moderator
25 Year Member
iTrader: (14)
 
Joined: Mar 2000
Posts: 43,187
Likes: 42
From: Littleton, CO USA
Car: 82 Berlinetta/57 Bel Air
Engine: L92/LQ4 (both w/4" stroke)
Transmission: 4L80E/4L80E
Axle/Gears: 12B-3.73/9"-3.89
This is one of those rare cases where it would be best to determine the cause of the problem before you start to fix it.
Reply
Old Aug 31, 2012 | 07:53 AM
  #5  
Edwardgp's Avatar
Supreme Member
10 Year Member
Liked
Loved
Community Favorite
 
Joined: Jan 2012
Posts: 2,027
Likes: 33
From: Washington State
Car: 1983 BB 1995 Z28 Camaro's
Engine: 454-350
Transmission: TH350-4l60e
Axle/Gears: 373 posi-Stock
Re: How do i adjust air fuel ratio on carb

Right on five.
Reply
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
Frozer!!!
Camaros for Sale
35
Jan 19, 2024 04:55 PM
specialized
TPI
27
Jun 18, 2022 09:26 AM
Infested
Tech / General Engine
3
May 22, 2018 11:56 PM
beachrodder
Tech / General Engine
7
Aug 25, 2015 08:05 AM
86IROC112
Engine/Drivetrain/Suspension Parts for Sale
4
Aug 17, 2015 02:00 PM




All times are GMT -5. The time now is 12:05 AM.