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

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Old Apr 27, 2005 | 08:58 AM
  #1  
K20's Avatar
K20
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From: Charlotte, NC
Car: 1987 Chevrolet K20
Engine: 496 MPFI
Transmission: TH400
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Ok aint on a camaro, but On my 87 Chevy truck, I have swapped in a big block, and have put on their MPFI conversion, that utilizes all the TBI stuff(computer, wiring, sensors, etc). Anway, this morning, go to crank the truck, it just turns over. The plugs arent wet, nor do they smell like fuel, so I dont think its getting fuel. Also, it isnt getting spark. I pulled a wire, put a plug in it, grounded it out, no spark. The fuel pumps are pressurizing the system when I hit the key to run. The chip is secure in the computer as well. Any ideas? Thanks for any help. Chris.
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Old Apr 27, 2005 | 09:01 AM
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Dewey316's Avatar
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From: Portland, OR www.cascadecrew.org
Car: 1990 Camaro RS
Engine: Juiced 5.0 TBI - 300rwhp
Transmission: T5
Axle/Gears: 3.42 Eaton Posi, 10 Bolt
if you are getting no spark, or fuel, you might check the pick-up in the dizzy.
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Old Apr 27, 2005 | 09:03 AM
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From: Moorestown, NJ
Car: 88 Camaro SC
Engine: SFI'd 350
Transmission: TKO 500
Axle/Gears: 9-bolt w/ 3.23's
Other possible causes are a bad module and faulty grounds.
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Old Apr 27, 2005 | 09:35 PM
  #4  
K20's Avatar
K20
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Joined: Jul 2003
Posts: 19
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From: Charlotte, NC
Car: 1987 Chevrolet K20
Engine: 496 MPFI
Transmission: TH400
Took my ign module to advance, had a warranty on the one that was in the truck, so got a new one. Still no difference. How do I go about testing the pickup coil? I dont really wanna pull the dizzy if I dont have to.
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Old Apr 27, 2005 | 09:39 PM
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From: Moorestown, NJ
Car: 88 Camaro SC
Engine: SFI'd 350
Transmission: TKO 500
Axle/Gears: 9-bolt w/ 3.23's
With a DVM, you can measure the resistance across teh two pin connector for the P/U coil. Should be from 500-1500 ohms and it shoulnt vary when you wiggle the wire around.
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