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Fuel tank issue

Discussion in 'Freightliner Forum' started by scokat, Apr 24, 2018.

  1. Apr 24, 2018 #1
    scokat

    scokat Bobtail Member

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    Oct 14, 2013
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    96 classic, 12.7 DD 60, ran out of diesel the other day, gauge said 3/4 full, checked drivers tank, 3/4 full, passenger tank empty. so it seems to be drawing from passenger tank and not returning to passenger tank. any ideas?
    there is no line between thew tanks to level off, so i guess there must be a proprtioning valve. Had this same issue last year, unhooked lines blew them all out, everything worked great till now.

    bad fuel lines, or maybe the proportioning valve on top of tranny?
     
    scokat, Apr 24, 2018
    scokat, Apr 24, 2018
    #1
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  3. Apr 24, 2018 #2
    truckdriver31

    truckdriver31 Road Train Member

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    bad cross over valve. how old are fuel lines. are they metal braided.
     
    truckdriver31, Apr 24, 2018
    truckdriver31, Apr 24, 2018
    #2
  4. Apr 24, 2018 #3
    scokat

    scokat Bobtail Member

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    Oct 14, 2013
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    not sure on the fuel lines, probably original i would guess.
     
    scokat, Apr 24, 2018
    scokat, Apr 24, 2018
    #3
  5. Apr 24, 2018 #4
    baha

    baha Road Train Member

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    Replace the fuel valve on trans. they go bad and must be replaced or next time you will have fuel leaking out of over full fuel tank.
     
    baha, Apr 24, 2018
    baha, Apr 24, 2018
    #4
  7. Apr 26, 2018 #5
    Smellfunny

    Smellfunny Road Train Member

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    9 times out 10 when one tank is empty and the other is full I find the tank that is full has a blockage in the suction side. Usually some form of trash.
     
    Smellfunny, Apr 26, 2018
    Smellfunny, Apr 26, 2018
    #5
  8. Apr 26, 2018 #6
    ShooterK2

    ShooterK2 Road Train Member

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    Same thing will happen if one of the vents is plugged up.
     
    ShooterK2, Apr 26, 2018
    ShooterK2, Apr 26, 2018
    #6
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