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2010 kenworth Cummins isx too much white smoke coming out of muffler

Discussion in 'Experienced Truckers' Advice' started by Gurjap, Dec 15, 2020.

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  1. Dec 15, 2020 #1
    Gurjap

    Gurjap Light Load Member

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    Hello friends,

    I have a 2010 kenworth t800 with a Cummins isx and I have cleaned it’s dpf filter just recently. However there are times where so much white smoke comes out my muffler and then stops and comes back sometime later. In a 10-12 hour drive it will have white smoke around 3 times for around 1-2 hours each time where the smoke comes out in 2 second bursts.
    Any help will be great!
     
    Gurjap, Dec 15, 2020
    Gurjap, Dec 15, 2020
    #1
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  3. Dec 15, 2020 #2
    TripleSix

    TripleSix God of Roads

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    Any coolant losses?
     
    TripleSix, Dec 15, 2020
    TripleSix, Dec 15, 2020
    #2
    Gurjap and magoo68 Thank this.
  4. Dec 15, 2020 #3
    magoo68

    magoo68 Road Train Member

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    If it’s not using coolant ,Sounds like it’s doing a regen I’d look at the 7 th injector .
     
    magoo68, Dec 15, 2020
    magoo68, Dec 15, 2020
    #3
    spindrift, firemedic2816 and TripleSix Thank this.
  5. Dec 15, 2020 #4
    AModelCat

    AModelCat Road Train Member

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    They cleaned the DPF but how was the catalyst ahead of it (the DOC)? When the catalyst starts to fail it will start to smoke white I believe.
     
    AModelCat, Dec 15, 2020
    AModelCat, Dec 15, 2020
    #4
    Flint1 Thanks this.
  7. Dec 16, 2020 #5
    Crazytrucker77

    Crazytrucker77 Heavy Load Member

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    I've heard that is also a symptom of a bad def doser valve
     
    Crazytrucker77, Dec 16, 2020
    Crazytrucker77, Dec 16, 2020
    #5
    Gurjap Thanks this.
  8. Dec 16, 2020 #6
    Dave_in_AZ

    Dave_in_AZ Road Train Member

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    Take it to Cummins, not a dealer.
     
    Dave_in_AZ, Dec 16, 2020
    Dave_in_AZ, Dec 16, 2020
    #6
    Gurjap Thanks this.
  9. Dec 16, 2020 #7
    Gurjap

    Gurjap Light Load Member

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    Hello sir,

    where is the DOC located and how does it look like?
     
    Gurjap, Dec 16, 2020
    Gurjap, Dec 16, 2020
    #7
  10. Dec 16, 2020 #8
    Gurjap

    Gurjap Light Load Member

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    No sir no loss at all
     
    Gurjap, Dec 16, 2020
    Gurjap, Dec 16, 2020
    #8
  11. Dec 16, 2020 #9
    AModelCat

    AModelCat Road Train Member

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    It looks very similar to the DPF and it should be mounted just ahead of the DPF (exhaust should flow through it first, then into the DPF).
     
    AModelCat, Dec 16, 2020
    AModelCat, Dec 16, 2020
    #9
    Gurjap Thanks this.
  12. Dec 16, 2020 #10
    Eddiec

    Eddiec Road Train Member

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    [​IMG]
     
    Eddiec, Dec 16, 2020
    Eddiec, Dec 16, 2020
    #10
    Gurjap Thanks this.
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