From Audi 100 to urS4 in a week
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Just went out and checked the oil level. After 140 mile drive no change in oil level, started up, and blue smoke is shooting out of the exhaust. So if it was the turbo, then I'd have blue smoke all the time, and oil consumption would be high in city and motorway driving.'93 Audi 100 Avant - R.I.P
'92 Audi UrS4 Avant - SOLD
'93 Audi UrS4 Avant
'15 Audi A7 quattro 3.0 TDIComment
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Just a thought, are you sure the PCV pipes are clear and no holes and the 2 valves are working? If you havent done it yet I would take the pipes off and wash them out and replace the 2 valves.Just went out and checked the oil level. After 140 mile drive no change in oil level, started up, and blue smoke is shooting out of the exhaust. So if it was the turbo, then I'd have blue smoke all the time, and oil consumption would be high in city and motorway driving.Comment
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Good point. On a meet a couple years back there was an S2 that started smoking because of a full catchcan. Blocked PCV would result in the same problems I think?Comment
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Thanks nightshift Dave.
Dayshift Dave usual hours are 7 AM PST to 12 midnight PST (UK is 8 hrs ahead) and last night it was 2 AM (night out) but I missed that post and am late for work this AM.
"Sorry Mr. Scrooge sir, we were making rather merry last night. It won't happen again"

By the way Hunker7: Most of what you need to know about your AAN is found here (click on the pertinent label, in this case PCV system):
RS2'd 93 UrS4 5 spd sedan
94 UrS4 V8 6 spd manual avantComment
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I filled the tank before 358 mile trip, and filled it again today, and consumption worked out at 8.7 l/100l which is 32mpg (doing about 80/85 mph most of the way+wasn't only motorway), which is good I guess? The trip computer said 28mpg
ALSO, I think the floaty thing in the tank isn't working right. Before filling up, tank was very very empty (I thought I won't make it to the station) and only 66 litres went in.
ALSO, is there a way to calibrate trip computer?
Last edited by hunker7; 8 December 2014, 15:12.'93 Audi 100 Avant - R.I.P
'92 Audi UrS4 Avant - SOLD
'93 Audi UrS4 Avant
'15 Audi A7 quattro 3.0 TDIComment
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Just read through the write up Dave did, and I did notice quite a lot of oil in the Michelin man hose, so possibly PCV system is clogged.
Will check it as soon as I get a free minute.
'93 Audi 100 Avant - R.I.P
'92 Audi UrS4 Avant - SOLD
'93 Audi UrS4 Avant
'15 Audi A7 quattro 3.0 TDIComment
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Just had a look at PCV system, and checked the hoses for blockage and checked the valves, the one-way valve that works when engine isn't boosting works fine, but how do I know if the other one is ok?'93 Audi 100 Avant - R.I.P
'92 Audi UrS4 Avant - SOLD
'93 Audi UrS4 Avant
'15 Audi A7 quattro 3.0 TDIComment

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