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OT: But routine - a car question
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I have a fairly mature Audi A6 2.5 TDi. Since it was serviced a year ago
(by a garage I trust entirely) it's exhibited one disturbing characteristic
(although nothing's actually broken). Kicking down the auto gearbox at any
speed (and more so at motorway speeds) causes our much loved family-bus to
emit a cloud of grey-black smoke, big enough to engulf the vehicle behind,
such that I worry it could cause an accident.
I drive the car rarely. SWMBO has lighter feet than me and probably isn't
looking in her mirror for the behaviour in any case. And the garage
couldn't reproduce the behaviour when we took it back a while later,
although professed to not having enough time to really warm it up and take
it for a good run (it was in for tyres at the time). I've seen it since,
but not recently...because I haven't driven it recently.
Likely/iest causes? So I can sound like I know what I'm talking about when
I drop it off for a service tomorrow.....?
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I'd guess at turbo wear or valve stem seals. The car will run pretty much
indefinately with either problem AFAIK, although I'm not much of a diesel
man.
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