88 5KTQ Fuel pressure issue

Denis sparkplugvw at hotmail.com
Tue Dec 28 13:26:05 EST 2004


  I made my own meter plug,fitting. Its easy.
  Use a pressure gage 0-100 or 120 psi from air supply tools stores..
  Put a hose fitting ot it, about 1/4 hose end type.
  Use a double fuel bolt to bolt another fuel fitting to the fuel filter output. I use an old fuel fitting with the hose from the intank pump system hose from 5000tq. The double bolt cost me 10$cdn to machine it from a metric bolt.
  I bolted the fitting (with the hose) to the fuel filter and plugged the other end to the 0-100 meter , with a rubber hose.Dont forget clamps.

  Ðenis
    ----- Original Message ----- 
    From: jesper moreau 
    To: list submissions 
    Sent: Tuesday, December 28, 2004 9:07 AM
    Subject: 88 5KTQ Fuel pressure issue


    I have been working with all of you recently with my rebuild issues (
    no spark and such)
    Well as you all know the "spark issues (frustration mounting)"
    submissions turned out triumphant. I am now getting healthy spark to
    those super expensive platin plugs of mine and couldn't be happier!

    I then submitted reguarding my ongoing "nostart" situation. I am happy
    to tell you that after sealing up all of the possible Vac leaks (as
    far as i know!!!) I am having a fuel pressure issue.

    Several have emailed me reguarding narrowing down the problem by
    jumpering the FP Relay and lifting up on the air flow damper after
    having placed each injector into a bottle. well, no spray. I thought
    crap.... those brand new injectors better not have gotten clogged. so,
    I detached the injector lines from the Fuel Dist. and put pressure to
    it and to my relief a beautiful conicle spray on each one.

    I know I'm not getting fuel because It will kick if I spray ether into
    the intake manifold but dies right out

    now, my fuel pump worked nicely up to May when i decided to shut her
    down to rebuild the engine. and I replaced the tank, fuel pressure
    accumulator and its connection lines to tank and fuel line, and the
    injectors.

    now 1 thing I am doing today is installing a new fuel filter which I
    should have done in the first place. also a new starter (burned out
    the old one trying to start the sucker)

    1. I'm at a loss. could my return line possibly be clogged..... if it
    was would that do anything?
    2. It is hard for me to believe my pump is bad... thats $235 bucks as
    the best price i could find.
    3. Ive read the recent submissions on "fuel pressure regulator issues"
    ... I don't have a fuel pressure meter to see exactly what pressure I
    am getting and where... but I do know it is not enough to push through
    the injectors.

    I could certainly use some BTDT or guesses as to what my problem might
    be. Thank you all so much!!!
    -- 
    Jesper Moreau
    '88 5KTQ rocket
    '86 5KTQ stock
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