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Failed MOT

Discussion in 'Diesel forum' started by Gnasher, Aug 27, 2009.

  1. Gnasher
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    Gnasher Gansher

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    [Aug 27, 2009]
    Audi A6 2.5tdi Quattro Failed MOT on bits I expected it to garage to sort those bits.

    Passed emmisions test however it failed the visual emmisions due to being smokey when oil temp at 75 degrees and above? :rulez:
    although I had the car running for almost an hour last night and could not see any smoke at all?

    Car had been stood for about 7 mths could this be the cause (not done an oil change yet)

    I have checked the oil breather filter (mist seperator) no hissing when loosening the oil filler cap.

    Timing is within limits slightly retarded from the middle line (should i advance it a little?)

    could it be the egr valve? the intake manifold feels quite hot?

    any ideas welcome...
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