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Thread: No pressure indication on fuel injection gauge

  1. #1
    Join Date
    Nov 2012
    Location
    BFL, Kern County CA
    Posts
    24

    Default No pressure indication on fuel injection gauge

    Where should I look for problems to resolve no indication of pressure on my fuel injector pressure gauge.
    Engine starts and runs fine; I believe it is a gauge problem but are there other things to check first?
    thanks
    D2 3J68xx
    Kern Co, CA
    rehkshop@sbcglobal.net

  2. #2
    Join Date
    Feb 2013
    Location
    Templeton, CA
    Posts
    8

    Default Injection pump gauge problem

    I had a problem with my D4 only the pressure never went down ... I replaced the gauge... problem solved! I borrowed a working gauge from another tractor to test the problem first. Hope this helps.

  3. #3
    Join Date
    Nov 2012
    Location
    BFL, Kern County CA
    Posts
    24

    Default

    Great Idea. Will try to find one to borrow to test my system and gauge.
    thx
    D2 3J68xx
    Kern Co, CA
    rehkshop@sbcglobal.net

  4. #4
    Join Date
    Nov 2006
    Location
    Lansing,Mi suburbs
    Posts
    1,178

    Default

    To start with loosen the feed line to gage while runing to see if you have flow, if you do then remove gage and bench test it using regulated compressed air, start with the pressure low and work it up, not sure what the pressure range is for the factory gage.

  5. #5
    Join Date
    Apr 2007
    Location
    Elkhorn, WI
    Posts
    3,876

    Default Search?

    Without doing a Search, I'm thinking its less than 30 psi?
    If you do bench test it as Steve A suggested, definitely use a Regulator starting at Zero, then raise it real slow!

  6. #6
    Join Date
    Jan 2007
    Location
    Moriches NY, Hancock Ma
    Posts
    2,530

    Default

    when i bench tested my D2 pressure gauge it maxed out at 30 psi
    Cat 941B, Cat D2 4U, Cat D3B, Cat D4 7U, Cat D6 9U

  7. #7
    Join Date
    Nov 2012
    Location
    BFL, Kern County CA
    Posts
    24

    Default

    Super feedback.

    Thanks for all the ideas!
    D2 3J68xx
    Kern Co, CA
    rehkshop@sbcglobal.net

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