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CAT C13 running rough

Discussion in 'Heavy Duty Diesel Truck Mechanics Forum' started by vvicess, May 23, 2017.

Page 1 of 2
  1. May 23, 2017 #1
    vvicess

    vvicess Bobtail Member

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    May 23, 2017
    0
    2006 peterbilt with a cat c13 , the truck will start and idle fine for around 10 seconds then it starts to miss a little for another 10 seconds and then it starts to miss and run really rough .fuel pressure was at 65 psi . changed the transfer pump and fuel pressure regulator and it brought the pressure up at 75 psi but the truck is still doing the same thing. new air filters , and injectors, over head was just done. all the injector wiring is tight. any ideas?
     
    vvicess, May 23, 2017
    vvicess, May 23, 2017
    #1
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  3. May 23, 2017 #2
    Bakerman

    Bakerman Road Train Member

    4,663
    8,812
    Jan 27, 2013
    Phoenix, AZ
    0
    I have a C 12 in a 2000 379 and my ECM took a crap. Could not find a used one so I bought one from RWC international here in Phoenix, $2100
    Truck runs like a raped ape now!
     
    Bakerman, May 23, 2017
    Bakerman, May 23, 2017
    #2
  4. May 23, 2017 #3
    Hogleg

    Hogleg Medium Load Member

    311
    258
    Nov 20, 2016
    Salem, Illinois
    0
    I would guess ecm wiring...
     
    Hogleg, May 23, 2017
    Hogleg, May 23, 2017
    #3
  5. May 23, 2017 #4
    swaan

    swaan Road Train Member

    2,942
    4,374
    Jul 12, 2009
    BC canada
    0
    Sounds like its sucking air.

    You can have good fuel pressure but still have air in it. Check all fuel suction lines.

    Check the return for air also going back to tanks
     
    swaan, May 23, 2017
    swaan, May 23, 2017
    #4
  6. Jan 28, 2020 #6
    orjnlfarmertom

    orjnlfarmertom Bobtail Member

    1
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    Jan 28, 2020
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    Was there ever a solution for this?
     
    orjnlfarmertom, Jan 28, 2020
    orjnlfarmertom, Jan 28, 2020
    #6
  7. Jan 28, 2020 #6
    spsauerland

    spsauerland Road Train Member

    4,296
    10,891
    May 31, 2010
    West Harrison, In
    0
    Is check engine light light on? If all injectors coded very good chance need an ECM.
     
    spsauerland, Jan 28, 2020
    spsauerland, Jan 28, 2020
    #6
    A5¢ Thanks this.
  8. Jan 28, 2020 #7
    alo4646

    alo4646 Bobtail Member

    9
    10
    Jan 28, 2020
    0
    We have a c15 and are slow at building boost. We got told injectors or sucking air somewhere.
     
    alo4646, Jan 28, 2020
    alo4646, Jan 28, 2020
    #7
  9. Jan 28, 2020 #8
    EtherOrBroke11

    EtherOrBroke11 Bobtail Member

    21
    12
    Jan 17, 2020
    0
    Sounds like sucking in air or ecm. Could also be an engine brake solenoid sticking when oil pressure builds up.
     
    EtherOrBroke11, Jan 28, 2020
    EtherOrBroke11, Jan 28, 2020
    #8
  10. Jan 29, 2020 #9
    Chubby Fly

    Chubby Fly Medium Load Member

    569
    797
    Nov 25, 2019
    0
    if you are worried about the suction line, the easiest and most efficent in my opinion is thead on a air fitting at top of fuel tank. Apply about 1 psi of shop air to the fuel tank. If there is so much as a pin hole anywhere on the suction, you will see where its coming from immediatly. Just follow the stream of fuel that is coming out
     
    Chubby Fly, Jan 29, 2020
    Chubby Fly, Jan 29, 2020
    #9
  11. Jan 30, 2020 #10
    EtherOrBroke11

    EtherOrBroke11 Bobtail Member

    21
    12
    Jan 17, 2020
    0
    Op did you fix your rough idle on your 2006 Pete C13
     
    EtherOrBroke11, Jan 30, 2020
    EtherOrBroke11, Jan 30, 2020
    #10
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