GM Truck Club
THE PREMIER CHEVY TRUCK & SUV FORUM
Founded in 2004 ~ We're the #1 Chevy Truck & SUV Forum.
Silverado & Sierra | Tahoe & Yukon | Suburban & Yukon XL | SUV & CROSSOVER
Results 1 to 3 of 3
  1. #1

    Default Fuel Pressure Test

    I have a 1993 GMC 1500 w/ a 350 TBI. I am looking to test the fuel pressure but am unable to locate a port to connect a gauge to. Can anyone tell me if there is one? I have looked at the fuel rails running on top of the manifold to the TBI but there is not one there.

  2. #2

    Default

    There isn't a test port. I tested my old 89 Suburban a few years back and, if I remember correctly, I had to disconnect the fuel line from the throttle body and use some adapters and rubber hoses that came with my pressure tester to do the test.
    Gary

    99 K 1500 Suburban
    78 Silverado Big 10 w/factory 454
    00 S-10 Blazer
    1976 Trans Am
    1980 Honda CB900 Custom

  3. #3

    Default

    Quote Originally Posted by GaryL View Post
    There isn't a test port. I tested my old 89 Suburban a few years back and, if I remember correctly, I had to disconnect the fuel line from the throttle body and use some adapters and rubber hoses that came with my pressure tester to do the test.
    I disconnected the line before the fuel filter to make sure the filter was not the culprit or gave me a faults reading.

    It is a pain.

    Technology is great, when it Works,
    And one Big Pain in the Ass When it Doesn’t.
    Detroit Iron Rules, All the Rest are Just Toys.
    94 GMC Burban, 5.7L (350), 4X4, Auto
    86 GMC Burban, 350, 2 WD, Auto
    79 GMC pickup plow truck, 400, Full time 4X4, Auto
    86 Pontiac Fiero SE, 2.8L, Auto, only mid engine American car
    See a Pattern yet?

    15 year GM assembly line worker.

Similar Threads

  1. Checking fuel pressure
    By dsquared in forum General Chevy & GM Tech Questions
    Replies: 3
    Last Post: 04-12-2010, 04:07 PM
  2. 5.3 fuel pressure?
    By slider_buck in forum Performance & Fuel
    Replies: 2
    Last Post: 04-08-2010, 05:25 PM
  3. 5.3 fuel pressure
    By shayes41 in forum Performance & Fuel
    Replies: 4
    Last Post: 02-25-2010, 09:01 AM
  4. 97 sierra: Fuel pressure
    By ESKYMOPACK in forum General Chevy & GM Tech Questions
    Replies: 5
    Last Post: 03-19-2009, 11:48 AM
  5. No fuel with no oil pressure
    By 70boss302 in forum General Chevy & GM Tech Questions
    Replies: 2
    Last Post: 08-22-2008, 11:28 PM

Tags for this Thread

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •