Fixing DEF problems and cleaning the system.

Discussion in 'Heavy Duty Diesel Truck Mechanics Forum' started by free2fly973, Jul 29, 2021.

  1. free2fly973

    free2fly973 Light Load Member

    88
    5
    Mar 9, 2012
    Oklahoma
    0
    Just wondering if you can disconnect DEF tank inlet hose to pump/filter, and disconnect DEF doser attached to 1 box. And run a inlet line from pump/filter to bucket of hot/warm water. Use software (my case Detroit dddl 8.13) and run the quantity test 1 to several times to clean entire system of def crystals. Maybe even use ionized or RO water. And allow to sit a bit in between times running quantity test to allow crystals to desolve. Then run good DEF to flush out water. Cost a filter and copper seal at doser/1 box.
    Reset any codes, if applicable, caused by process.
     
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  3. free2fly973

    free2fly973 Light Load Member

    88
    5
    Mar 9, 2012
    Oklahoma
    0

    If not able to run quantity test through software maybe run appropriate direct voltage to pump to activate.
     
  4. Bracsim

    Bracsim Bobtail Member

    4
    1
    Dec 19, 2016
    0
    Every body knows DEF is a money pit, corruption at it best, politicians passing laws for $$$$ and corporations producing DEF are becoming billionaires forcing other to use their products, this is not capitalism anymore, we are living under communist corruption, the best solution for DEF is = get that stinky fluid out of our life, there is not a single truckers out there who likes that stinky good for nothing fluid in their trucks, is not about the environment, is all about $$$$$ and corruption.
     
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