c15 black smoke when started cold

Discussion in 'Trucks [ Eighteen Wheelers ]' started by little cat 500, Feb 28, 2013.

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  1. Feb 28, 2013 #1
    little cat 500

    little cat 500 Road Train Member

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    i have a 6nz cat when started cold it smokes black for a couple seconds injectors are a couple weeks old motor has around 100000 on rebuild no codes all filters are new where should i start
     
    little cat 500, Feb 28, 2013
    little cat 500, Feb 28, 2013
    #1
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  3. Feb 28, 2013 #2
    Scrapper

    Scrapper Light Load Member

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    Who put the injectors in?? Direct replacements or upgraded? How much smoke?? Did installer put in the trim new trim codes on top of the new injectors?? If not one or more could be dumping a little more fuel than the old one did with the proper trim code. All of ours have a little puff at cold startup no big deal.
     
    Scrapper, Feb 28, 2013
    Scrapper, Feb 28, 2013
    #2
  4. Feb 28, 2013 #3
    little cat 500

    little cat 500 Road Train Member

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    antrim put the injectors in they are delphi they all have a trim # of 1200 so im forced to run the same # on all injectors since cat ecm wont take a 1200 trim its a puff of black smoke clears right up was just wondering if i may have had another problem
     
    little cat 500, Feb 28, 2013
    little cat 500, Feb 28, 2013
    #3
  5. Feb 28, 2013 #4
    Heavyd

    Heavyd Road Train Member

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    It is normal for a little puff of black at start up.
     
    Heavyd, Feb 28, 2013
    Heavyd, Feb 28, 2013
    #4
  7. Feb 28, 2013 #5
    aiwiron

    aiwiron Road Train Member

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    You have a dirty ##### driver
     
    aiwiron, Feb 28, 2013
    aiwiron, Feb 28, 2013
    #5
  8. Feb 28, 2013 #6
    little cat 500

    little cat 500 Road Train Member

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    ok ill go with the normal just had me alittle worried tired of puttin injectors in the thing
     
    little cat 500, Feb 28, 2013
    little cat 500, Feb 28, 2013
    #6
  9. Feb 28, 2013 #7
    Diesel Dave

    Diesel Dave Last Few of the OUTLAWS

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    If it was me, just saying, with NEW injector's should have the trim's put in the ECM. You will notice a difference, especially if your running a stronger file. I notice a BIG difference when I did it to my engine. It had the 1200 default on all six BEFORE. Now with the trim's of the injector's, it idle's and run's smoother and it has that CAT knock(sound) to it.
     
    Diesel Dave, Feb 28, 2013
    Diesel Dave, Feb 28, 2013
    #7
  10. Mar 1, 2013 #8
    morehp

    morehp Medium Load Member

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    How is your power and fuel economy?
     
    morehp, Mar 1, 2013
    morehp, Mar 1, 2013
    #8
  11. Mar 1, 2013 #9
    little cat 500

    little cat 500 Road Train Member

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    power is fine fuel milage is little better runs very smooth im not sure every body understands that the injectors do not have trim # they all have a trim of 1200 this is what the guy at ipd told me ( The Cat trim system can not be deciphered. Most EUI systems utilized a default trim code. IPD utilizes CAT defined default code since our injectors are held to a tighter specification.)



    C15 Default trim code is 1100, 5232 more fuel, 6999 for max HP
     
    little cat 500, Mar 1, 2013
    little cat 500, Mar 1, 2013
    #9
  12. Mar 1, 2013 #10
    Diesel Dave

    Diesel Dave Last Few of the OUTLAWS

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    Diesel Dave, Mar 1, 2013
    Diesel Dave, Mar 1, 2013
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