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

Injectors not squirting during startup...

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Old Sep 16, 2002 | 01:07 AM
  #1  
allmotorta's Avatar
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From: Portage, IN
Injectors not squirting during startup...

What would cause the injectors to not squirt while I'm cranking the engine over? If I pour gas in to "prime" it, it fires right up and the injectors start squirting. This is for my friend's TBI car. We can't figure it out If I don't prime it, it doesn't start obviously. Any ideas?
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Old Sep 16, 2002 | 07:56 AM
  #2  
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From: Randleman,NC,USA
Car: 91 Camaro RS Convertible
Engine: 385ci LT1 cnc ported heads big cam
Transmission: 4L60E automatic
Axle/Gears: 3.42 Zexel posi 7.5" rear
Either the fuel pump isn't running or the VATS system is disabling the fuel pump if the key is not making the proper contacts in the steering column.
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Old Sep 16, 2002 | 08:56 AM
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Slade1's Avatar
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From: Brampton, Ontario
Fuel pump relay is busted? Try replacing that...
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Old Sep 16, 2002 | 01:04 PM
  #4  
allmotorta's Avatar
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From: Portage, IN
The relay is good and the fuel pump is working. I pulled off the fuel filter and turned the key to "acc" and fuel shot outta the line. The fuel pump seems to be working good.
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Old Sep 16, 2002 | 01:08 PM
  #5  
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From: Randleman,NC,USA
Car: 91 Camaro RS Convertible
Engine: 385ci LT1 cnc ported heads big cam
Transmission: 4L60E automatic
Axle/Gears: 3.42 Zexel posi 7.5" rear
Most likely VATS problem then.
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Old Sep 17, 2002 | 01:02 AM
  #6  
allmotorta's Avatar
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From: Portage, IN
We fixed it today. I noticed the dome light went out so I replaced the fuse for it. After I replaced the fuse the car started right up. Who would guess the courtesy light fuse would have anything to do with firing the injectors during startup? It was cool to have an easy fix for once tho
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