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cummins 400

Discussion in 'Peterbilt Forum' started by jkoehn, Aug 1, 2012.

  1. Aug 1, 2012 #1
    jkoehn

    jkoehn Bobtail Member

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    Aug 1, 2012
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    I am working on a 1987 Pete 377 with a 400 cummins the truck has been sitting for more than 3 years and it started but was very slugish they changed the fuel filter and then the truck would not start at all so I came in and found holes in the main feen fuel line and the cross over line from tank to tank and still will not start
     
    jkoehn, Aug 1, 2012
    jkoehn, Aug 1, 2012
    #1
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  3. Aug 1, 2012 #2
    bender

    bender Road Train Member

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    Don't Kid Yourself
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    Fill the gear pump with fuel through the plug hole on top of the pump, fill fuel filter, screw the fuel solenoid thumb screw in to manual.
     
    bender, Aug 1, 2012
    bender, Aug 1, 2012
    #2
  4. Aug 1, 2012 #3
    jkoehn

    jkoehn Bobtail Member

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    Aug 1, 2012
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    what way do you screw the thumb screw and when you get it running do i put the thumb screw back to where it was
     
    jkoehn, Aug 1, 2012
    jkoehn, Aug 1, 2012
    #3
  5. Aug 1, 2012 #4
    bender

    bender Road Train Member

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    Don't Kid Yourself
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    Screw it in for manual and back out for electrically controlled with key on/off. Once you get it running decent then screw the thumbscrew back out and verify operation of the fuel solenoid and circuit.
     
    bender, Aug 1, 2012
    bender, Aug 1, 2012
    #4
  7. Aug 1, 2012 #5
    jkoehn

    jkoehn Bobtail Member

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    Aug 1, 2012
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    i know the solenoid works tested that but someone told me I may have to bleed the injectors
     
    jkoehn, Aug 1, 2012
    jkoehn, Aug 1, 2012
    #5
  8. Aug 1, 2012 #6
    bender

    bender Road Train Member

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    Jul 20, 2010
    Don't Kid Yourself
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    You don't need to bleed the injectors on a PT fuel system. Prime the gear pump and filter and hold the pedal to the wood when cranking it up.
     
    bender, Aug 1, 2012
    bender, Aug 1, 2012
    #6
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