truck missing need help

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

  1. homesick

    homesick Light Load Member

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    Nov 26, 2007
    memphis,tn
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    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
     
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  3. Heavyd

    Heavyd Road Train Member

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    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.
     
  4. FYDA FREIGHTLINER CINCY

    FYDA FREIGHTLINER CINCY Light Load Member

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    Apr 28, 2009
    Cincinnati, ohio
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    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?
     
  5. homesick

    homesick Light Load Member

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    Nov 26, 2007
    memphis,tn
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    no check engine light
     
  6. FYDA FREIGHTLINER CINCY

    FYDA FREIGHTLINER CINCY Light Load Member

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    Apr 28, 2009
    Cincinnati, ohio
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    bypass the ecm cooling plate first..
     
  7. homesick

    homesick Light Load Member

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    Nov 26, 2007
    memphis,tn
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    i have no idea what you are talking about
     
  8. Bigray

    Bigray Road Train Member

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    Nov 23, 2007
    Tampa, Florida
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    the mechanic will, take the truck to a dealership or cummins guy.
     
  9. homesick

    homesick Light Load Member

    161
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    Nov 26, 2007
    memphis,tn
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    what will bypassing it do
     
  10. Baack

    Baack Road Train Member

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    May 24, 2007
    Wisconsin
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    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:
     
    Freebird135 Thanks this.
  11. Heavyd

    Heavyd Road Train Member

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    Feb 4, 2009
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    By passing those parts will help troubleshoot your problem. They will bypass temporarily to help diagnose.
     
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