1. This site uses cookies. By continuing to use this site, you are agreeing to our use of cookies. Learn More.

DPF filter and the MOT smoke test

Discussion in 'A3/S3/Sportback (8P Chassis)' started by S3 Dave, Apr 16, 2012.

  1. S3 Dave
    Offline

    S3 Dave Now running on Heavy Oil

    Joined:
    Jul 1, 2007
    Messages:
    432
    Likes Received:
    3
    [Apr 16, 2012]
    Took My oil burner for it's MOT last week and it was that good on the smoke test it would not register! 0.01 at idle 0.03 at redline.
    The gas machine said it needs to be revved and wouldn't accept the test! How mental! Failure due to being too good. Got around it in the end but doesn't the test needs changing for cars with a DPF!!. Good reason to get get it took out in my book!!
    #1
  2. Ads

    Ads

    [Dec 25, 2014]

  3. c_w
    Offline

    c_w Well-Known Member

    Joined:
    Feb 23, 2010
    Messages:
    1,058
    Likes Received:
    62
    [Apr 16, 2012]
    Sounds a bit wrong to me! Also I thought the diesel smoke test was optional!!
    #2
  4. The Governor
    Offline

    The Governor Active Member

    Joined:
    Mar 21, 2012
    Messages:
    440
    Likes Received:
    65
    [Apr 16, 2012]
    How did you get around it in the end?
    #3
  5. Rick @ Unicorn Motor Dev.
    Offline

    Rick @ Unicorn Motor Dev. Site Sponsor Site Sponsor

    Joined:
    Jan 25, 2012
    Messages:
    895
    Likes Received:
    198
    [Apr 17, 2012]
    With a DPF they don't smoke!
    #4
  6. Ian-83
    Offline

    Ian-83 Member

    Joined:
    Apr 8, 2012
    Messages:
    202
    Likes Received:
    4
    [Apr 17, 2012]
    All diesels made after 1st August 1979 are required to have a smoke test. With DPF the smoke meter should have an rpm device which connects to the battery or cigarette lighter which somehow works out the engine rpm. We use this system at work and never have problems with DPF cars though they are only just starting to get to the age for first test.
    #5

Share This Page