Cutter

Does any one else have this problem with there twin. After driving it for a bit then you park for about 10-30min on restarting it you get a nice puff of blue smoke. This is happening to a buddy of mine as well. My dealer says this is normal.

VS

This used to happen for the first 4,000 miles, then it receded. Also, it was more pronounced if the car was parked on the upslope. Several people reported the same thing. AFAIK, all these cars are still around

Tom Gripe

I agree. Mine used to smoke frequently at startup. But now with 6000 miles it is a rare occurrence. What surprised me was how much oil the twin uses. Perhaps a quart every 1000 miles. So don't worry about the smoke but check your oil level at each fill up for a few months until you get the feel for how much oil your twin consumes. It may seem like a lot but hey these are thoroughbreds!!
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Viken

It is normal for a boxer engine to smoke briefly at startup. Oil has the tendency to seep through into the combustion chamber while the car is parked and burn at startup.

p996tt2k

I researched this subject quite a bit for several reasons...

After talking to ANDIAL and several other places, it would seem the oil is collecting at the turbos and when the engine is started the oil is burned at the turbos.

At least, this story is being repeated by some people that should know.

At least it makes me "feel" better. Even with 6k miles, my car still does this a little bit when the car is sitting in the garage for over a week or two.

Rick

cobra06

How does it wind-up in the turbos?

Viken

[quote]Originally posted by p996tt2k:
<strong>After talking to ANDIAL and several other places, it would seem the oil is collecting at the turbos and when the engine is started the oil is burned at the turbos.</strong><hr></blockquote>

This doesn't make much sense. While it is possible for oil to get inside the Turbo's due to leaks through the seals (hopefully not on newer cars), it can only burn inside the combustion chambers. If there is any oil inside the Turbo's, it would have to travel through the entire intake system before it makes it to the cylinders which might take a few seconds.

cobra06

That's kind-of what I thought, and if it did there must be a BIG puddle farther upstream.

porschekiddyuk

you must set the oil level to the middle bar,for upto 6000 miles.

Steve N.

Several months ago there was a string of messages on this topic, including suggestions as to the best way to seat the rings on the 996 TT motor. My car now has 4500 miles, and I still get a very significant amount of blue smoke, reasonably frequently, on startup. The car continues to burn much more oil than the non-turbo 996's I owned - almost zero oil consumption with these cars, and never a hint of the blue smoke. Hence I can't accept the explanation that this 996 TT behavior is related to the boxter design. Rather, it must be associated with the nature of the ring material, cylinder finish, etc. These babies just take a heck of a long time to seat their rings.

1AS

I wonder if it has something to do with break-in and the slipperyness of Mobile 1. On my Lotus Elise 190 R, the car was delivered with mineral oil in the engine, but definite instructions to break -in the car for a few hundred miles, then change oil (and filter) using Moblie 1 before track use. When I talked to the factory service rep, he explaine that it's harede to break in an engine, starting with synthetic oil.

Cutter

I have 9000kms. on my car now and I hope that this problem will soon go away. Usually breakin is done around 5000km. It's just imberessing with a $175000 (cdn) car on a busy street you start it up and a big cloud of blue comes pouring out the exhaust.

Kevin

While I would tend to agree with the statement that the rings are a major issue with regards to the smoke on start up. If some of you are not allowing proper shut down (idle for 2 minutes) this condition is known as a hot shut down (as most of you know). Oil is drawn through the piston ring seal, on the hot side. Though minute at first, it does accelerate. Contrary to Vikens post, oil that leaks through to the turbine side will burn quickly, and exit through the cats and out the tailpipe, it will not be ingested back into the engine, it has already been through this cycle. Always keep in mind the different pathways.

gtdrei

It seems all of my 911's have done this, some more than others. My 996 TT does it less than my 993 TT did.

Robin
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