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Fuel Pressure Test

Discussion in 'Chevy C/K Truck Forum' started by Streight1, Jun 20, 2007.

  1. Streight1

    Streight1 New Member

    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. GaryL

    GaryL Epic Member 5+ Years ROTM Winner 1000 Posts Platinum Contributor

    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.
  3. 84fiero123

    84fiero123 Epic Member 5+ Years 1000 Posts Platinum Contributor

    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.

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