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Losing power up hill on my KW with paccar mx 13

Discussion in 'Heavy Duty Diesel Truck Mechanics Forum' started by Gzusgardey, Nov 10, 2018.

  1. Nov 10, 2018 #1
    Gzusgardey

    Gzusgardey Bobtail Member

    3
    0
    Sep 1, 2017
    0
    When I down shift from any of my high side gears more so when loaded at 30-44,000 lbs I get a miss fire or chugging from my motor. I lose all power climbing hills of all sizes (don’t feel it as bad on flat land) and once I’m back into 13th gear and feather the accelerator, I can feel the miss fire feeling go away.

    The only code is for #5 injector and i already replaced it and still having the same issue. My check engine light is off.
    PLEASE HELP!!!
     
    Gzusgardey, Nov 10, 2018
    Gzusgardey, Nov 10, 2018
    #1
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  3. Nov 11, 2018 #2
    JohnC123

    JohnC123 Light Load Member

    135
    66
    Jan 25, 2018
    0
    The year is very important because it separates EPA2010's from EPA2013's, 2 different animals when it comes to the fuel side. Its easier to start with the fuel filters or the air CAC systems. Have these items been CLOSELY inspected for damage/pin holes, thin spots (boots), whens the last time someone changed the fuel filters? Just trying to eliminate the obvious.
     
    JohnC123, Nov 11, 2018
    JohnC123, Nov 11, 2018
    #2
    stillwurkin Thanks this.
  4. Nov 11, 2018 #3
    Gzusgardey

    Gzusgardey Bobtail Member

    3
    0
    Sep 1, 2017
    0
    Hi its a KW 2014 and I've replaced the fuel filters and no luck. Thanks for responding i really do appreciate it
     
    Gzusgardey, Nov 11, 2018
    Gzusgardey, Nov 11, 2018
    #3
  5. Nov 11, 2018 #4
    RicoNC

    RicoNC Light Load Member

    92
    121
    Jan 31, 2015
    Raleigh/Clayton, NC
    0
    What CODES are showing? Once you are on the touch screen , go to TRUCK, DIAGNOSE, It'll show some codes ...something like.. 20181106_062057.jpg
    I kinda have the same problem you're mentioning...is this what shows at your screen??
     
    RicoNC, Nov 11, 2018
    RicoNC, Nov 11, 2018
    #4
  7. Nov 11, 2018 #5
    Gzusgardey

    Gzusgardey Bobtail Member

    3
    0
    Sep 1, 2017
    0
    Hello, actually my check engine light is off and i don't get any codes on my dashboard.
     
    Gzusgardey, Nov 11, 2018
    Gzusgardey, Nov 11, 2018
    #5
  8. Nov 12, 2018 #6
    JohnC123

    JohnC123 Light Load Member

    135
    66
    Jan 25, 2018
    0
    Still haven't talked about your CAC charge air system; boot condition, clamps, rubbed spots from the hood possibly (pressure testing cooler itself), really sounds like your leaking air at high rpm (plastic bond clamps), maybe even turbo actuator being right at the threshold of being "out of calibration".
     
    JohnC123, Nov 12, 2018
    JohnC123, Nov 12, 2018
    #6
  9. Jun 6, 2022 #8
    BlueCockster

    BlueCockster Bobtail Member

    4
    0
    Jun 6, 2022
    0
    Would like an answer to these situations myself
     
    BlueCockster, Jun 6, 2022
    BlueCockster, Jun 6, 2022
    #8
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