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2011 a3 s line smoke query

Mark1984 Aug 14, 2019

  1. Mark1984

    Mark1984 Registered User

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    Hi there, I’ve got a 2011 a3 s line tdi and I noticed today that just before the turbo is about to kick in there’s a small touch of smoke coming from the exhaust for a second then stops. Doesn’t happen all the time but I noticed it a few times pulling out at junctions as soon as I was in 2nd gear or 3rd it would happen. Can anyone give me some advice on this please
     
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  3. Scotty75

    Scotty75 Well-Known Member Silver Supporter

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    When you say smoke , is it white , blue or black ? Losing any coolant ?
     
  4. Mark1984

    Mark1984 Registered User

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    It’s a more a black colour pal. My little brother is a mechanic and has had vag cars for years and he said it’s like a dpf filter just needs a clean but I’m 74 miles on the motorway every day so should be clean?
     
  5. Scotty75

    Scotty75 Well-Known Member Silver Supporter

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    If be inclined to agree with your mate . DPF's do clog up , even with regen cycles . The regen cycles help to reduce build up and your 74 miles will definitely trigger a good regen cycle.

    However the DPF is still just a filter and over time any filter is going to need a deep clean or replacement . It's the Achilles heel of modern diesel engines if you ask me .

    I've heard good things about Teraclean , that may be with trying . I think a full system clean is about £300. Cheaper than replacing a DPF.
     

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