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.

Stalling

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Old 02-08-2018 | 10:00 AM
  #1  
SketchyZed's Avatar
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Car: 1991 camaro z28
Engine: 5.7
Transmission: 700r4
Axle/Gears: 3.23
Stalling

Car has a built 355 vortec heads a 292 cam also have a holley street demon carb but it stalls and dies when I come to a stop
Old 02-08-2018 | 10:53 AM
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From: Mile High Country !!!
Car: 1967 Camaro, 91 z28
Engine: Lb9
Transmission: M20
Axle/Gears: J65 pbr on stock posi 10bolt
Re: Stalling

Should of kept it tpi lol
Check idle speed and afr adjustment on the idle circuit.

Last edited by Tuned Performance; 02-08-2018 at 11:31 AM.
Old 02-08-2018 | 11:41 AM
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midias's Avatar
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From: Henrietta NY
Car: 1984 Trans Am L69
Engine: Sniper EFI Powered 355
Transmission: WC T5 w/ Steel Support Plate
Axle/Gears: 3.42 10 Bolt Posi
Re: Stalling

Check the basics, timing, AFR, idle settings and ignition components. Report back what you find
Old 02-08-2018 | 09:05 PM
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Car: 1991 camaro z28
Engine: 5.7
Transmission: 700r4
Axle/Gears: 3.23
Re: Stalling

I still have the efi just tucked away so if i ever want to go back i can always go, but as for the carb don't have a lot of time to mess with it till Saturday but after that morning i will let you know everything. I did hear that out of the box the street demons run rich
Old 02-08-2018 | 09:55 PM
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From: Meriden, CT 06450
Car: 84 TA orig. 305 LG4 "H" E4ME
Engine: 334 SBC - stroked 305 M4ME Q-Jet
Transmission: upgraded 700R4 3200 stall
Axle/Gears: 10bolt 4.10 Posi w Lakewood TA Bars
Re: Stalling

Is your float level set correctly. Read Sofa's Holley Tuning Sticky: https://www.thirdgen.org/forums/carb...ey-tuning.html
Old 02-10-2018 | 06:48 PM
  #6  
SketchyZed's Avatar
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Car: 1991 camaro z28
Engine: 5.7
Transmission: 700r4
Axle/Gears: 3.23
Re: Stalling

I had someone look at it today and said my choke is sticking and that is whats causing it to flood how do i fix this i'm new to carbs

Last edited by SketchyZed; 02-10-2018 at 06:58 PM.
Old 02-10-2018 | 07:08 PM
  #7  
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Car: 1991 camaro z28
Engine: 5.7
Transmission: 700r4
Axle/Gears: 3.23
Re: Stalling

the choke will not move when i try to turn the black cap
Old 02-10-2018 | 07:15 PM
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Tuned Performance's Avatar
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From: Mile High Country !!!
Car: 1967 Camaro, 91 z28
Engine: Lb9
Transmission: M20
Axle/Gears: J65 pbr on stock posi 10bolt
Re: Stalling

It’s been along time since I’ve fooled with a carb but.


Sounds like a mechanical hang up not the electric choke pull off.
The setting on the side adjust the amount of time it takes for pull off of the choke I don’t think it’s for the choke adjustment. The linkage might be bound on the high idle cam side of the choke .
Old 02-10-2018 | 07:28 PM
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Car: 1991 camaro z28
Engine: 5.7
Transmission: 700r4
Axle/Gears: 3.23
Re: Stalling

oh so the fast idle screw is what i would need to mess with
Old 02-10-2018 | 09:26 PM
  #10  
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From: Mile High Country !!!
Car: 1967 Camaro, 91 z28
Engine: Lb9
Transmission: M20
Axle/Gears: J65 pbr on stock posi 10bolt
Re: Stalling

The linkage can be pinched with the air cleaner housing. They recommend pn 786004
Air cleaner base to clear the choke linkage.
Old 02-10-2018 | 09:30 PM
  #11  
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From: Mile High Country !!!
Car: 1967 Camaro, 91 z28
Engine: Lb9
Transmission: M20
Axle/Gears: J65 pbr on stock posi 10bolt
Re: Stalling

There are two primary adjustments: the fast idle adjustment screw and the choke timing. The fast idle adjustment screw controls how far the primary butterflies are open when the choke butterfly is closed or partially closed. It controls how fast the engine will idle during cold engine warm up. The fast idle adjustment screw is located on the bracket that is screwed to the throttle shaft, behind the choke housing
Old 02-10-2018 | 09:44 PM
  #12  
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Car: 1991 camaro z28
Engine: 5.7
Transmission: 700r4
Axle/Gears: 3.23
Re: Stalling

oh okay
Old 02-10-2018 | 10:39 PM
  #13  
SketchyZed's Avatar
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Car: 1991 camaro z28
Engine: 5.7
Transmission: 700r4
Axle/Gears: 3.23
Re: Stalling

i lost a screw for the cap what size is it?
Old 02-10-2018 | 10:51 PM
  #14  
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From: Mile High Country !!!
Car: 1967 Camaro, 91 z28
Engine: Lb9
Transmission: M20
Axle/Gears: J65 pbr on stock posi 10bolt
Re: Stalling

Take out another machine screw and match it up at the hardware store
Old 02-11-2018 | 04:56 PM
  #15  
SketchyZed's Avatar
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Joined: Jul 2016
Posts: 331
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Car: 1991 camaro z28
Engine: 5.7
Transmission: 700r4
Axle/Gears: 3.23
Re: Stalling

yeah i did that fixed it and now car doesn't stall, i was just asking just in case someone knew off hand
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