1996 Chevrolet Truck Fuel to cylinders

Tiny
CHEWBAKA
  • MEMBER
  • 1996 CHEVROLET TRUCK
  • 5.7L
  • V8
  • 2WD
  • MANUAL
  • 120,000 MILES
I have a 1996 Chevy PU. It will not start. I have spark to the cylinders. I have fuel to the fuel metering module. The fuel meter is integral with the injectors all located in the intake manifold. How can I determine if it is the fuel meter or the Engine Control Module? Maybe neither? Help. Thank you
Monday, December 22nd, 2014 AT 3:25 PM

7 Replies

Tiny
WRENCHTECH
  • MECHANIC
  • 20,761 POSTS
There is a fuel pressure test port near the back of the engine. You need to test the fuel pressure using an accurate gauge. This engine is very pressure sensitive and has to have a minimum of 55 PSI to run.
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Monday, December 22nd, 2014 AT 4:25 PM
Tiny
CHEWBAKA
  • MEMBER
  • 8 POSTS
Holidays were hectic. Thank you for your response. Finally managed to borrow a gauge. Pressure measures 60 lbs. Next move? Thank You.
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Sunday, December 28th, 2014 AT 5:54 AM
Tiny
CHEWBAKA
  • MEMBER
  • 8 POSTS
Thank you for the response. Finally able to check the pressure. It is 60 lbs.
Next move?

Best Regards
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Sunday, December 28th, 2014 AT 5:56 AM
Tiny
WRENCHTECH
  • MECHANIC
  • 20,761 POSTS
Does your check engine light come on for bulb test when the key is first turned on?

I would also check for stored trouble codes. At some point we will have top test for injector pulse and that may be difficult for you with this particular engine.
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Sunday, December 28th, 2014 AT 6:20 AM
Tiny
CHEWBAKA
  • MEMBER
  • 8 POSTS
Thank you for the response. The check engine light comes on and goes out as advertised. Having trouble with codes since it is an old OBD 1 system. What is involved with the injector pulse test? All of the injectors are hidden in the intake manifold. The wires come from the engine computer entering the meter through a plug. Do they just pass through the meter to the injectors or is there electrical switching that takes place in the meter?
Best Regards
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Sunday, December 28th, 2014 AT 2:17 PM
Tiny
WRENCHTECH
  • MECHANIC
  • 20,761 POSTS
This truck is not OBD1. That stopped in '95
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Sunday, December 28th, 2014 AT 2:21 PM
Tiny
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  • MEMBER
  • 8 POSTS
Thanks. I was told at AutoZone it was OBD1.

Best regards
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Sunday, December 28th, 2014 AT 2:32 PM

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