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Cleaning DPF

Sp3no82 Jun 24, 2018

  1. Sp3no82

    Sp3no82 Member

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    My A4 B7 Avant 2.0tdi 170 has been suffering numerous issues recently including flashing glow plug light, leaking exhaust manifold gasket and blocked DPF.
    Well I hit it hard this weekend and the Turbo is off the car along with the Exhaust manifold and DPF.
    I want to clean the DPF but how do I do this off the car, I was thinking of buying some DPF fuel additive and pouring it in neat and shake it around and let it soak then jet wash it out? Any better ideas?
     
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  3. KrisKrk

    KrisKrk A6 C6 4F 2010 LeMans Avant Gold Supporter TDi Audi A6 Audi Avant Owner Group S-line owners group Manual Le Mans Edition

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    Another method to get rid of the dpf problems is to gut it out.
    I would recommend to cut it open on the seam, empty it out and weld it back on nicely so it looks still intact.
    If you have a friendly MOT garage, you shouldn’t have any problems with passing it.

    If not, your method is good, imho.
    Just make sure you use high pressure washer to rinse it all out first, before any chemicals use and jet all the sh... out again.


    Sent from my iPhone using Tapatalk
     
    RS4B5 likes this.
  4. Gazwould

    Gazwould Well-Known Member

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    What has caused the dpf to block ?
     
  5. Sp3no82

    Sp3no82 Member

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    I am assuming it's been caused by the faulty Air Flow Meter which I'm also changing. I think it may have been causing it to run rich?
     
  6. Gazwould

    Gazwould Well-Known Member

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    Anything causing a richer mixture will cause dpf death , thermostat , boost leak , leaking injectors etc .

    Very important to find out or it's back to blocked .
     
    WesT-gefül likes this.
  7. Sp3no82

    Sp3no82 Member

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    Hoping that fixing the exhaust manifold gasket and fitting a new Air Flow sensor will fix the issue. How do you spot leaky injectors?
     
  8. RS4B5

    RS4B5 5 pots

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    Lob it out
     
  9. Sp3no82

    Sp3no82 Member

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    Is it a bad idea to hit the inside of the DPF with a blow torch to burn off the soot and ash? The DPF cleaner seemed to just get soaked into the filter and practically nothing came back out so I tried to blow it through with a pressure washer but again the water hardly passed through. So I then used a blow torch to heat it up and dry it out but the cleaner I put in turned out to be flammable so it just ignited inside lol.
    I tried to wash it out again with water and have left it to dry overnight. Not quite the result I was expecting!!
     
  10. bradh

    bradh Active Member VCDS Map User

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    There are companies you can send the dpf to and they will clean it almost like new and return it google them plenty about
     
  11. ayfreetee

    ayfreetee Well-Known Member

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    You can buy proper dpf cleaner fluid, you block one end and fill it with the fluid, then leave it over night, then give it a good shake and tip it out, google it to find out where to buy it, there are a few videos on YouTube.
     
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  13. Seanchadwick2k3

    Seanchadwick2k3 Audi A6 C6 2.0tdi 2011 Sline Special Edition Audi A6 S-line owners group Le Mans Edition

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    There is a dpf cleaning firm called soniclear that is always going to the garage by my office
     

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