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?
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...
Passed emmisions test however it failed the visual emmisions due to being smokey when oil temp at 75 degrees and above?
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...
