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.

Its to rich

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Old Jan 15, 2008 | 11:18 AM
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waggl1's Avatar
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Its to rich

I have a 91 rs camaro that was changed from TBI 305 to carberated 305 all the guy did was change the intake and put i believe a 650 on it with a high rise intake i don't know what kind of intake but it has a stock fuel filter, but I have tried to adjust my carb to run right with the air fuel mixture screws and **** but i don't know it just keeps running rich and i don't know what to do really.

Last edited by waggl1; Jan 15, 2008 at 03:13 PM.
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Old Jan 15, 2008 | 01:14 PM
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From: Littleton, CO USA
Car: 82 Berlinetta/57 Bel Air
Engine: L92/LQ4 (both w/4" stroke)
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Welcome aboard thirdgen.org.

Some more information would be helpful, such as what carburetor, what distributor, what intake you used. And, what you're doing for a fuel pump, under what conditions it is rich, what you have done to try to adjust it, etc.
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Old Jan 15, 2008 | 05:54 PM
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Engine: Vortec 4200 Inline 6 PT70 Turbo..
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Re: Its to rich

Maybe he didn't add a fuel pressure regulator to lower the pressure from 14psi DOWN to 5-7 PSI like the carb needs. If this is true...you're engine might run good OR it might hang the floats open and FLOOD the engine to a point of Not being able to idle or run remotely good.

If you figure this out, you'll want to plum up a by-pass style fuel pressure regulator like Mallory or Aeromotive makes. Integrate a guage so you can see the pressure and adjust it properly...goodluck!
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