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Freightliner Cascadia 2011 DD13 too much fuel plugging the dpf?

Discussion in 'Heavy Duty Diesel Truck Mechanics Forum' started by A gear per tire, Feb 28, 2019.

  1. Feb 28, 2019 #1
    A gear per tire

    A gear per tire Bobtail Member

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    Jan 26, 2019
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    Hey guys, has anyone ran into this problem? I recently had a truck come in to replace the turbo since it filled the one box with oil. After replacing the whole contaminated One Box with both DPF filters, we began a forced regen. After about a good 5 minutes the truck began to blow excessive smoke out the tail. We removed the one box and found out ut was filled almost to the brim with diesel. Im thinking it could either be a stuck doser block or a computer issue. Thanks guys.
     
    A gear per tire, Feb 28, 2019
    A gear per tire, Feb 28, 2019
    #1
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  3. Mar 1, 2019 #2
    mhyn

    mhyn Road Train Member

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    Dec 29, 2008
    Northridge, CA
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    I have seen this scenario many times. First remove egr hot pipe and inspect it. if you see fuel in that pipe then most likely there is a leaking injector. If that pipe is dry remove doser injector and check it for leak. If it is leaking replace the doser block.
     
    mhyn, Mar 1, 2019
    mhyn, Mar 1, 2019
    #2
    A gear per tire and QUALITYTRUCK Thank this.
  4. Mar 23, 2019 #3
    A gear per tire

    A gear per tire Bobtail Member

    40
    10
    Jan 26, 2019
    0
    Sorry for the late update, but i removed the block doser and replaced it with a new one and fixed the problem. Ty for the tips guys.
     
    A gear per tire, Mar 23, 2019
    A gear per tire, Mar 23, 2019
    #3
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