Beyond Frustrated

Discussion in 'Trucks [ Eighteen Wheelers ]' started by BrownTruckerWife, Jun 21, 2015.

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  1. Jun 21, 2015 #1
    BrownTruckerWife

    BrownTruckerWife Bobtail Member

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    Jun 21, 2015
    0
    I have a 94 Pete 379 with a CAT 5EK motor, just replaced all injectors, fuel lines and filters... Truck runs great as long as you are easing through the gears. While trying to do a hard accelerate the truck sputters and is now missing. What have I missed in trying to get her running smooth again???
     
    BrownTruckerWife, Jun 21, 2015
    BrownTruckerWife, Jun 21, 2015
    #1
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  3. Jun 21, 2015 #2
    javelinjeff

    javelinjeff Medium Load Member

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    Aug 30, 2007
    victorville,ca
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    Where did you get your injectors?
     
    javelinjeff, Jun 21, 2015
    javelinjeff, Jun 21, 2015
    #2
  4. Jun 21, 2015 #3
    062

    062 Road Train Member

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    Oct 20, 2013
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    Start with the basics check all grounds,ECM power leads and such.
     
    062, Jun 21, 2015
    062, Jun 21, 2015
    #3
    BrownTruckerWife and Heavyd Thank this.
  5. Jun 21, 2015 #4
    Home_on_wheels

    Home_on_wheels Road Train Member

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    1,136
    Apr 19, 2015
    Cruising the USA
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    Double check all your fittings on fuel lines. if loose, could be sucking air on heavy demand.
     
    Home_on_wheels, Jun 21, 2015
    Home_on_wheels, Jun 21, 2015
    #4
  7. Jun 21, 2015 #5
    BrownTruckerWife

    BrownTruckerWife Bobtail Member

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    Jun 21, 2015
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    All fittings & lines have been checked. Curious if maybe this could be an electrical problem of some kind?
     
    BrownTruckerWife, Jun 21, 2015
    BrownTruckerWife, Jun 21, 2015
    #5
  8. Jun 21, 2015 #6
    BrownTruckerWife

    BrownTruckerWife Bobtail Member

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    Jun 21, 2015
    0
    All been done and good.
     
    BrownTruckerWife, Jun 21, 2015
    BrownTruckerWife, Jun 21, 2015
    #6
  9. Jun 21, 2015 #7
    062

    062 Road Train Member

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    Oct 20, 2013
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    Is it throwing any codes?
    When was last time cam sensor replaced?
     
    062, Jun 21, 2015
    062, Jun 21, 2015
    #7
  10. Jun 21, 2015 #8
    Alaska76

    Alaska76 Road Train Member

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    Jan 20, 2014
    Inland Empire, WA
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    Checked the fuel pressure? Checked the fuel supply lines between the pump and the tank?
     
    Alaska76, Jun 21, 2015
    Alaska76, Jun 21, 2015
    #8
  11. Jun 22, 2015 #9
    201

    201 Road Train Member

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    Apr 16, 2014
    high plains colorado
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    Hi Alaska, that would be my guess on a 20 year old truck. I've heard of rubber lines coming apart from the inside, restricting flow.
     
    201, Jun 22, 2015
    201, Jun 22, 2015
    #9
  12. Jun 22, 2015 #10
    Truck engine machinist

    Truck engine machinist Light Load Member

    195
    188
    Dec 2, 2011
    USA
    0
    It sounds like injector seats in the head, need to be recut. They allow combustion to be forced into the fuel system.
    The best way to check them, is to run a fuel return line from the head to the tank, by way of the windshield, with a sight glass (Grainger part # 1U892) in the line. Then as you drive, you can observe the returning fuel, and if you see air bubbles or foam in the fuel while it is misfiring, you know that combustion is getting into the fuel system. Also, the fuel tends to turn black, due to the combustion particles getting into the fuel.
     
    Truck engine machinist, Jun 22, 2015
    Truck engine machinist, Jun 22, 2015
    #10
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