W211 om642 exhaust smell interior

Discussion in 'Interior' started by JohnnyW202, Aug 8, 2017.

  1. JohnnyW202

    JohnnyW202 Active Member

    May 22, 2011
    2004 Mercedes E270CDI Elegance Saloon, 2004 C200 Kompressor Estate Avantgarde SE Sport Pack
    When idling I can smell exhaust fumes in the cabin goes away with the recirc button and when moving.

    Checked the exhaust at the rear no leaks or soot deposits on the egr pipe, turbo to cat, manifold inlet pipes to turbo.

    It's quite choking! Changed the charcoal cabin filter and it blocked the smell for a couple of weeks but now it's back.

    Anyway to modify the air intake so it's away from the back of the engine seems a stupid design.

    Sent from my iPhone using Tapatalk
  2. Daveml350

    Daveml350 New Member

    Aug 16, 2017
    Ml350 CDI 4 Matic
    Hi. I had the same problem with my ML, turned out to be a copper washer that one of the injectors tightens down onto. I think they call it chuffing. My mechanic fitted new washer and is now all sorted.

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