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2.5 TDI started smoking since service.

Ant1984 Feb 8, 2010

  1. Ant1984

    Ant1984 New Member

    I changed the oil, oil filter and air filter yesterday, it seemed fine at the time and afterwards but now smoke with a blue tinge (burnt oil) is coming from the exhaust, not loads but it wasnt there yesterday.

    Is this somewhat normal after an oil change on a high mileage diesel or is it something else?

    I appreciate that it could be something devastatingly bad but is there any smaller, cheaper things worth checking first?

    Just had a search, seems maybe the EGR valve should be cleaned out, but this doesnt really solve the problem of why it has started just after a service.

    Many thanks

    Last edited: Feb 8, 2010
  2. John C

    John C Member

    Hi Ant1989
    To see if your EGR valve is blocked remove your oil filler cap & listen for a 'pop' of pressure being released. I had the problem & it seemed to come on all of a sudden & perhaps the oil change is coincidental.
    John C.
  3. Ant1984

    Ant1984 New Member

    Thanks,should the car be running or not when I remove the cap.?

    It actually seems to have settled down a bit I don't know if I might have slightly overfilled it, it was maybe 1mm over the max mark. I've done that with a lot of cars with no consequence, are the tdis very sensitive to overfilling?

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