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THIS DISCUSSION / SOURCE-DERIVED OVERVIEW
Discussion summary
YOUR RESEARCHWhite Smoke- Here we go!!!!
Leading reported evidence
Check coolant and coolant level-looked great
Performed · outcome unconfirmed
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0
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0
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1
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Performed · outcome unconfirmed · Original poster
Again, I checked the coolant and coolant level-looked great.
Leading evidence: 'Check coolant and coolant level-looked great' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Check coolant and coolant level-looked great' (1 discussions). For that action, 0 discussions report a resolution and 0 report an unsuccessful attempt. No action has an explicit, attributable resolution report under the current rules. These are forum reports and suggestions, not a confirmed diagnosis.
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Performed · outcome unconfirmed · Original poster
Stopped at a store, checked oil level and coolant level- all ok.
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Performed · outcome unconfirmed
But ever since I replaced the AOS when it eventually failed, I've never had the white smoke curse.
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Suggestion
It probably is the AOS, but double check your oil level, did you have it changed recently?
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Suggestion
It probably is the AOS, but double check your oil level, did you have it changed recently?
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20 eligible posts · 0 unverified posts · 1 discussions match the subject in their title or opening post.
Rennlist: 1 discussions
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Generation: 20261026T191851Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources
Alright, I am having some problems and I need your help. Earlier today, I started a new post with a clip of my 996 before and after I put cat bypass pipes on. I put them on this am. Not sure if that is connected or not but today I was driving on some country roads. I was going quite fast around a corner. As soon as I did, I started having a good amount (not huge but still quite a bit, worse when I accelerated) of white smoke from the back of the car. I slowed down to about 45mph then accelerated hard again- no white smoke. Continued driving for about 10miles and still no white smoke. Stopped at a store, checked oil level and coolant level- all ok. After car was sitting for about 10 minutes- restarted car- white puff of smoke- lasted about 1 minute then nothing. Drove home- about 10 miles, put car in garage, let sit for about 2 minutes- no white smoke. Went out about 20 minutes later- large puff of white smoke coming form both exhaust pipes. At idle, small amount of white smoke. I blipped the accelerator from the engine bay, I could feel a small amount of fluid hit my leg from the exhaust pipe. I got under the car looked around, everything looked great. Again, I checked the coolant and coolant level-looked great. Oil level also ok however when I took the oil filler tube cap off- there was a lot of condensation and yellow/white crud in the tube.
By the way, the car was driving great the entire time.
I have been told in the past that water in the engine will cause crud in the oil filler tube.
Here are the things that I am thinking (based on past experiences and searching this forum). 1-If there was a blown head gasket, I would guess that the smoke would only be seen from one exhaust pipe? 2-when I put on the cat bypass pipes could I have screwed up the o2 sensors or somethign else? 3- if i do detect a intermix issue, is there anythign that I can do? also if and intermix issue would I see the same amount of smoke from BOTH exhaust pipes? 4- is it possible that the extremely fast and hard turn could have caused an issue that would have resulted in this issue? if this were the case, I thought that the smoke would be more of a black color.
I know that I have rambled quite a bit but as all of you can understand, I am very worried about my baby. Of all the questions, please address question #3.
TO MAKE MATTERS WORSE- TODAY IS THE DAY THAT MY EXTENDED WARRANTY EXPIRED!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
^^^What Marc said.
I see you have been here since Apr 07, you should've heard of the 911 white smoke issue already, in order not to panic.
Most people will tell you it's normal after a spirited drive, or after a hard corner. I've been thru' that, and that was what I believed then. But ever since I replaced the AOS when it eventually failed, I've never had the white smoke curse. So...I now believe that it is an early sign of an AOS starting to go bad. It should still last for a good while before it gets embarrassing. Good Luck.
For some reason I never really payed attention to the white smoke posts. I figured that I would look into things if they developed. Thats were I am now. Thanks to all of your posts I have been searching this issue and the AOS is definately the problem.
Does anybody know if there is a DIY on this topic. My car is a manual. The only info that I can find is that Tips may or may not need an engine removal (not relevent to my case) and I also found a boxster DIY however I saw that this is quite different.
It probably is the AOS, but double check your oil level, did you have it changed recently? could be that it is is over filled and if you drove it hard it will smoke.
small amount of fluid hit your leg?... do you have a dog?
Ok... its condenstae... did it stop after the car is warmed up... about the AOS thing, you might have an overfill oil or dont top it off all the way... .5 pint less should work.
After a spirited drive... let it idle for a minute or two before you shut the car off.... this will lessen the chance of smokey start-up
.... or your engine is toast and need a new one........
kidding
I am certain that the issue that I am having is from the AOS. I got under the car and I cannot see how it is possible to remove the AOS without removing the engine. My car is a manual. Am I missing something?? I can easily access the bolts that hold the aos to the case however I cannot see how to remove the AOS and also how to access the hoses. Any tips would be greatly appreciated.
you have to take the throttle body, alternator, and drivers side plenum out to have access to the hose. From under the car.... rubber bellows and aos... you dont need an engine drop.
http://www.6speedonline.com/forums/9...seperator.html
thanks for the advice. i took throttle body, alternator and plenum out. The plenum removal was a real pain. Are there any tricks to getting them out (for the future). Also, any tips for putting the plenum back on? I do not have much skin left on my knuckles so again, any tips would be greatly appreciated. I cannot figure out how I am going to put the front most plenum bolt back on.
Now for the POS, I mean AOS.
Wow! I am living the same nightmare with a 1999 C4! I have been looking for a simple hint through every forum to get this stupid AOS out. PLEASE, PLEASE keep me posted with pics if you can. I am up on jack stands and was tempted to drop the engine. Did you get to the hiding culprit?
Thanks, Kevin
Hi Kevin,
We are a visual bunch. I am not very smart so pictures are great in my book. Pls post pics of your car or we will have to post different types of eye candy pics to satisfy us.
