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truck missing need help

Discussion in 'Trucks [ Eighteen Wheelers ]' started by homesick, Apr 30, 2009.

Page 1 of 2
  1. Apr 30, 2009 #1
    homesick

    homesick Light Load Member

    161
    8
    Nov 26, 2007
    memphis,tn
    0
    my truck is missing and i cant figure out what it is.the truck hesites and misses once it gets up to speed it runs smooth.the shop has hooked a computerup and road tested it and thinks it is a injector but cant tell for sure.will a dyno show which injectors are bad and what does a dyno usually cost.the truck is a 99 fld with n14 and 10 speed auto
     
    homesick, Apr 30, 2009
    homesick, Apr 30, 2009
    #1
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  3. Apr 30, 2009 #2
    Heavyd

    Heavyd Road Train Member

    7,812
    6,265
    Feb 4, 2009
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    Start with the simple things first. Have the shop install a sight-glass or clear fuel line at the inlet of the pump, or filter housing and see if the fuel has a lot of air bubbles. A good culprit of your symptoms is the engine sucking some air from a leaking fuel line on the suction side.
     
    Heavyd, Apr 30, 2009
    Heavyd, Apr 30, 2009
    #2
  4. Apr 30, 2009 #3
    FYDA FREIGHTLINER CINCY

    FYDA FREIGHTLINER CINCY Light Load Member

    270
    131
    Apr 28, 2009
    Cincinnati, ohio
    0
    u can also bypass the ecm cooling plate with a union. have seen a few of of those sucking air thier . also check your fuel line t's or shut offs above the rear of the transmission for fuel leaks. a shop with a cummins computer should be able to run cylinder cut out and the computer will show if a injector is bad or not. and i take it u have no check engine light?
     
    FYDA FREIGHTLINER CINCY, Apr 30, 2009
    FYDA FREIGHTLINER CINCY, Apr 30, 2009
    #3
  5. Apr 30, 2009 #4
    homesick

    homesick Light Load Member

    161
    8
    Nov 26, 2007
    memphis,tn
    0
    no check engine light
     
    homesick, Apr 30, 2009
    homesick, Apr 30, 2009
    #4
  7. Apr 30, 2009 #5
    FYDA FREIGHTLINER CINCY

    FYDA FREIGHTLINER CINCY Light Load Member

    270
    131
    Apr 28, 2009
    Cincinnati, ohio
    0
    bypass the ecm cooling plate first..
     
    FYDA FREIGHTLINER CINCY, Apr 30, 2009
    FYDA FREIGHTLINER CINCY, Apr 30, 2009
    #5
  8. Apr 30, 2009 #6
    homesick

    homesick Light Load Member

    161
    8
    Nov 26, 2007
    memphis,tn
    0
    i have no idea what you are talking about
     
    homesick, Apr 30, 2009
    homesick, Apr 30, 2009
    #6
  9. Apr 30, 2009 #7
    Bigray

    Bigray Road Train Member

    1,135
    383
    Nov 23, 2007
    Tampa, Florida
    0
    the mechanic will, take the truck to a dealership or cummins guy.
     
    Bigray, Apr 30, 2009
    Bigray, Apr 30, 2009
    #7
  10. Apr 30, 2009 #8
    homesick

    homesick Light Load Member

    161
    8
    Nov 26, 2007
    memphis,tn
    0
    what will bypassing it do
     
    homesick, Apr 30, 2009
    homesick, Apr 30, 2009
    #8
  11. Apr 30, 2009 #9
    Baack

    Baack Road Train Member

    15,294
    10,174
    May 24, 2007
    Wisconsin
    0
    Where is the last time you remember seeing it LOL
    Every time I see this thread title I keep thinking you lost something:biggrin_25519:
     
    Baack, Apr 30, 2009
    Baack, Apr 30, 2009
    #9
    Freebird135 Thanks this.
  12. Apr 30, 2009 #10
    Heavyd

    Heavyd Road Train Member

    7,812
    6,265
    Feb 4, 2009
    0
    By passing those parts will help troubleshoot your problem. They will bypass temporarily to help diagnose.
     
    Heavyd, Apr 30, 2009
    Heavyd, Apr 30, 2009
    #10
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