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TBI Throttle Body Injection discussion and questions. L03/CFI tech and other performance enhancements.

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Old 08-06-2009, 12:09 AM   #1
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Car: 91 Camaro RS
Engine: Carbd 355
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TBI HELP

I just rebuilt my tbi that belongs on my 88 chevy truck. Ya i know its not third gen related but the same tbi came on camaros. I have been having fuel leak probs with the tbi so i got the master rebuild kit which includes about everything except the diaphram. I put it all together and put it back on truck. Truck starts up but instead of the injectors spraying fuel they just drip. I went back and checked the little filter and o rings at the bottom of the injectors and they are fine. So i tried a different set of injectors i had from a different tbi. Put the new filters and o rings on and they still drip instead of spray like they are supposed to. If i dont figure somethan out i am going to throw the piece of junk in the yard and buy an intake and carb for it. Thanks
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Old 08-06-2009, 12:12 AM   #2
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Join Date: Jan 2007
Location: winchester va
Posts: 223
Car: 1991 camaro vert
Engine: 305 tbi.. mods list wont fit here
Transmission: 700R4 with B&M stage 2 shift kit
Axle/Gears: stock now but have 3.73s posi NIB

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Re: TBI HELP

if u do decide to carb it u dont have to buy an intake manifold.. just a carb adaptor plate.. i have no clue y they would just drip. i havent taken mine apart
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1991 Camaro RS convertible.
*mods list*... 305 TBI with ported heads and intake, flowmaster exaust, underdrive pulley kit, B&M stage 2 shiftkit in 700R4, hypertech chip,fiberglass turbo hood, 3.73 rear gears still in box.
www.cardomain.com/ride/3363875

Parts For sale
LT1 intake manifold brand new used for mock up
heat painted red and black tpi setup -wireing harness pm me if interested
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Old 08-06-2009, 12:31 AM   #3
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Re: TBI HELP

maybe its not the hardware but the wiring did u plug the injector plugs back on? and if not could have a wiring problem check main fuses
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Old 08-06-2009, 01:43 AM   #4
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Car: 89' RS
Engine: 350 TBI
Transmission: 700r4
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Re: TBI HELP

I did that after my rebuild. I couldn't understand why she wouldn't start up for about five minutes ah ahahaha.
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Old 08-06-2009, 12:34 PM   #5
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Re: TBI HELP

Thanks for the info guys. I guess ill go check the fuses
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Old 08-06-2009, 05:12 PM   #6
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Re: TBI HELP

did you check the fuel pressure
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Old 08-06-2009, 07:42 PM   #7
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Re: TBI HELP

No havent checkd fuel pressure yet
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Old 08-09-2009, 04:23 PM   #8
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Car: 1992 Firebird
Engine: 350 TBI W/all Ultimate TBI Mods
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Re: TBI HELP

Check fuel pressure first. Unplug the injector wiring harnesses off the top of the injectors. Take a 9-volt battery and quickly tap the electrodes and listen to see if you hear a clicking noise. Do this to both injectors individually.

Also, go to the parts store and buy a noid light. Plug this into your injector harness and see if it lights up. Following instructions!!

Either no fuel pressure, no injector pulsing or the injectors are stuck.
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Old 08-17-2009, 02:43 PM   #9
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Car: 1986 Jeep CJ7
Engine: 1987 Chevy 350 TBI
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Axle/Gears: Dana 44 Rear, Dana 30 Front-for now

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Re: TBI HELP

Hi Everyone!

I have a Chevy 350 TBI (out of a 1987 3/4 ton truck) in a Jeep CJ7.

The throttle linkage was a mess when I got it. Replaced TBI from RV Moorse in Orange, CA.

Of course took it apart and now am having trouble putting all of the hoses and wires to and from the wires from smog stuff, intake manifold (Front & rear of intake hooking up the hoses). Can someone help with some simple step by step photos?

Thanks,
Ken
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