Results 1 to 8 of 8

Thread: Fuel problem?

  1. #1
    Senior Member KE70's Avatar
    Join Date
    Dec 2008
    Name
    Alek
    State
    VIC
    Location
    Lalor
    Country
    Australia
    Posts
    150

    Default Fuel problem?


    TO REMOVE ADS, PLEASE
    REGISTER OR SIGN IN
    My car is still not running properly but I have finally pinned it to a fuel problem.

    The car runs but very crappy when you try to rev it and you can't stab the throttle, need to gently increase it otherwise it pops and splutters. With spraying start your bastard down the throttle body it works fine and revs cleanly.

    Fuel pump seems to be fine as there is ~45 psi in the fuel line when the car is running. Also the injectors were cleaned and tested professionally.

    When I rip out a spark plug there is a little bit of fuel in there, im not sure what could be causing that.

    Any help/advise would be appreciated.

  • #2
    Senior Member
    Join Date
    Dec 2008
    Name
    Trev
    State
    Queensland
    Location
    Redbank Plains
    Country
    Australia
    Posts
    401

    Default

    Before you diagnose the fuel system have a look at the TPS adjustment.

  • #3
    Senior Member KE70's Avatar
    Join Date
    Dec 2008
    Name
    Alek
    State
    VIC
    Location
    Lalor
    Country
    Australia
    Posts
    150

    Default

    TPS seems to be fine, I changed it and set the values again. There were not spot on to factory specs but they are the closest I could get.

  • #4
    Senior Member
    Join Date
    Dec 2008
    Name
    stefan
    State
    vic
    Location
    eastern suburbs
    Country
    australia
    Posts
    725

    Default

    45psi seems to be too high, should be more like 25psi on standard fuel pressure reg. then again when i had a malpassi reg 18psi made the engine run super rich

  • #5
    Senior Member KE70's Avatar
    Join Date
    Dec 2008
    Name
    Alek
    State
    VIC
    Location
    Lalor
    Country
    Australia
    Posts
    150

    Default

    The gauge we had was made for air so it could be wrong, lol

    But there is defiantly pressure there so that rules out the pump.

  • #6
    Senior Member
    Join Date
    Dec 2008
    Name
    Dusty
    State
    VIC
    Location
    Lynbrook
    Country
    Australia
    Posts
    581

    Default

    what sort of computer are you running on the car?

  • #7
    Senior Member
    Join Date
    Dec 2008
    Name
    Trev
    State
    Queensland
    Location
    Redbank Plains
    Country
    Australia
    Posts
    401

    Default

    Quote Originally Posted by KE70 View Post
    TPS seems to be fine, I changed it and set the values again. There were not spot on to factory specs but they are the closest I could get.
    Ok, Closest isn't always operational tho, Nelsons sprinter developed the same problem after a night on the skid pan, Turned out to be the TPS.

  • #8
    Senior Member KE70's Avatar
    Join Date
    Dec 2008
    Name
    Alek
    State
    VIC
    Location
    Lalor
    Country
    Australia
    Posts
    150

    Default


    TO REMOVE ADS, PLEASE
    REGISTER OR SIGN IN
    Yeah ill check the TPS again and let you know how it goes.

  • Similar Threads

    1. fuel problem
      By Shitbox in forum Technical - Questions
      Replies: 9
      Last Post: 8th June 2012, 06:28 PM
    2. NSW WTD ae86 gt fuel tank, pump and fuel line supply
      By smash in forum Cars or Parts Wanted
      Replies: 0
      Last Post: 2nd February 2012, 09:09 PM
    3. Idle and fuel problem, running rich
      By capatown in forum Technical - Questions
      Replies: 5
      Last Post: 6th December 2010, 10:36 PM
    4. fuel rail adaptor plate for aftermarket fuel pressure reg
      By 1sik20valve in forum Cars or Parts Wanted
      Replies: 2
      Last Post: 5th January 2010, 02:18 PM
    5. Fuel Overflow Problem - Any Suggestion???
      By joshcris in forum Technical - Questions
      Replies: 9
      Last Post: 30th March 2008, 04:00 PM

    Posting Permissions

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