audi a6 2.7t smoking

My 2000 audi a6 2.7t just started smoking (real bad) out of both exhaust pipes. It also sounds like the waste gate is partially open (like a small exhaust leak). The oil is 3 weeks old (synthetic 5w 40)
as is the filter. I am not getting any engine codes and the car seems to run OK. Not that I took it too far when I saw the smoke. Could it be the turbo? What would cause that to happen? Too lean a fuel mixture? Just age?
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What color is the oil? If it's white-ish gray, then probably head gasket is shot (coolant getting into the cylinders). If it's bue-ish then you are buring oil so could be any number of things.
Dan D '04 A4 1.8Tq MT-6 Central NJ USA
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Oil color is good. Color of smoke is bluish. I am definitely burning oil. Any ideas?
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In article

Is there anything you can unscrew to give you a look between the exhaust manifold and the turbo? Maybe an oxygen sensor or EGR valve? It may help you determine if it's the turbo or something like the valve stem seals.
It would be good to fix it before your catalytic converter clogs or melts.
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I cant see an easy way to get at anything prior to the turbo. The engine compartment is jammed full.
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I have the same car. I had same issue last year or early this year (~ 81K). Well, I posted on this forum but did not hear anything. First of all, if you are in really cold areas then you may expect some smoke in the winters. At the start of the winter, it seems to be a lot. Mine had some bad smoke once when I started to work for 3-4 miles in the morning (temperatures ~ 25-30 F or -2 to -5 C). I turned around and went to a mechanic shop. But by then there was no smoke. The mechanic said it was usual in the winters. If there is any oil that settled and froze overnight may burn incompletely and give some smoke cold weather. I did not see much smoke later on. I still keep a watch on it.
After couple of months, all of a sudden my car starting shaking real bad in a parking lot and then I had issues in the engine. one of the 6 valves had debris/ residue settled in it and was misfiring. It had to be replaced and costed a bomb (1200$). It could be a completely independent issue from the smoke but I believe the smoke (if it is too bad) was an indication of the debris collected. I would get it checked or atleast have an engine oil flush (100$) which is good for the car as part of maintenace at a high mileage. I would check with a dealer and see if it is suggested and get it done at any good oil change shop. Good luck. Let us know if you found any solutions to your smoke issue.
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Did you have a sound like an exhaust leak or an open turbo waste gate?
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No. I did not have any noise. Not that I could notice.
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I do.
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It is not uncommon for the early 2.7 biturbos to need turbos. Drop the under engine cover and you will see the intercoolers. Pull the hoses off and check to see if any oil is present. Some oil is normal but if there is a lot than the turbos need replacing. The cat converters are very efficent and you might not always see excessive amount of smoke.
From 1999 to 2001 when VW was having oil consumption issues with the 2.0 we had cars that were documented oil consumers and never saw smoke out the tail pipes.
Again why did you go to synthetic oil? This car is suppose to use regular oil. Model year 2004 is when everything swapped over to synthetic across the model line.
Have you performed an oil consumption test?
Make sure the oil is at the full mark and write down the exact mileage.
Use 4 full tanks of fuel.
Check the oil to see if it is moving.
If it is now monitor after each tank full.
The bottom line is you have to be at exactly 1 quart used on the stick.
When you are write down the mileage top off the oil and do it again.
After the second quart now compare the results.
Is the second reading close to the first?
If it is close than that is the consumption to 1 quart of oil.
I wouldn't condem anything until you know exactly what the consumption is.
Other posters did mention cold weather start up. Depending on your location it is not uncommon to push some smoke because of fuel enrichment during cold start up.
On Sat, 8 Dec 2007 06:15:30 -0800 (PST), Jims Audi

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On Jan 13, 10:12am, snipped-for-privacy@comcast.net wrote:

Here's the end result. The serpentine belt was installed wrong when I had the timing belt changed. It was rubbing on something causing the engine noise. As far as the synthetic oil, the 2.7t calls for synthetic 5w40 but I was unable to get that locally so I was using a heavier synthetic. The car no longer smokes but it has not gotten as cold since that morning either. Live and learn I guess. The plus is I have found a local mechanic who works on Audis and is honest.
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a Deo magister; nemo enim potest haec signa facere quae tu facis nisi Deus fuerit cum eo.178 He does not judge of the miracles by the teaching, but of the teaching by the miracles.
The Jews had a doctrine of God as we have one of Jesus Christ, and confirmed by miracles. They were forbidden to believe every worker of miracles; and they were further commanded to have recourse to the chief priests and to rely on them.
And thus, in regard to their prophets, they had all those reasons which we have for refusing to believe the workers of miracles.
And yet they were very sinful in rejecting the prophets and Jesus Christ because of their miracles; and they would not have been culpable, if they had not seen the miracles. Nisi fecissem... peccatum non haberent.[179] Therefore all belief rests upon miracles.
Prophecy is not called miracle; as Saint John speaks of the first miracle in Cana and then of what Jesus Christ says to the woman of Samaria, when He reveals to her all her hidden life. Then He heals the centurion's son; and Saint John calls this "the second miracle."
809. The combinations of miracles.
810. The second miracle can suppose the first, but the first cannot suppose the second.
811. Had it not been for the miracles, there would have been no sin in not believing in Jesus Christ.
812. "I should not be a Christian, but for the miracles," said Saint Augustine.
813. Miracles.--How I hate those who make men doubt of miracles! Montaigne speaks of them as he should in two places. In one, we see how careful he is; and yet, in the other, he believes and makes sport of unbelievers.
However it may be, the Church is without proofs if they are right.
814. Montaigne against miracles.
Montaigne for miracles.
815. It is
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