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Bluish white smoke while driving - 986 Forum - The Community for Porsche Boxster & Cayman Owners

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YOUR RESEARCHBluish white smoke while driving - 986 Forum - The Community for Porsche Boxster & Cayman Owners

Reported or suspected cause

drain plug; it's totally seized up

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Reported cause · Original poster

But now the main issue is my drain plug; it's totally seized up.

Bluish white smoke while driving - 986 Forum - The Community for Porsche Boxster & Cayman Owners
Frequently discussed work

Check plug tubes

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Suggestion · Original poster

And I'll definitely check the plug tubes for the oil leak.

Bluish white smoke while driving - 986 Forum - The Community for Porsche Boxster & Cayman Owners
Read full discussion summary

Leading evidence: 'drain plug; it's totally seized up' (1 discussions report identifying this cause; no attributable repair resolution). Across 1 matching discussions, the most frequently mentioned possible cause is 'drain plug; it's totally seized up' (1 discussions; 1 report identifying it and 0 suggest it). The most frequently discussed action is 'Check plug tubes' (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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1 matching discussions · 20 captured posts examined · 1 partial discussions

Compare 4 other evidence results

Replace oil and aos

Performed · outcome unconfirmed

No successful repair reported for this finding.

0
Reported fixes
0
Unsuccessful attempts
1
Discussions
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Explicit resolution reports before identified causes, performed actions and suggestions. Within each level, matching component labels precede direct query mentions and inherited thread context; successful versus unsuccessful discussion counts, owner confirmations and independent discussion support determine order. This is not a probability of success.

Discussions that performed work without a confirmed outcome
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0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.

0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.

Performed · outcome unconfirmed · Original poster

Okay so it's been a few weeks since I changed the oil and AOS.

Bluish white smoke while driving - 986 Forum - The Community for Porsche Boxster & Cayman Owners

good idea

Suggestion or failed attempt

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0
Identified cause
1
Suspected cause
0
Reported fixes
Read evidence and context

Explicit resolution reports before identified causes, performed actions and suggestions. Within each level, matching component labels precede direct query mentions and inherited thread context; successful versus unsuccessful discussion counts, owner confirmations and independent discussion support determine order. This is not a probability of success.

Discussions that suspect a cause
1

0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.

0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.

Suspected cause

Probably a good idea to do it while you have some down time if they haven't been replace yet.

Bluish white smoke while driving - 986 Forum - The Community for Porsche Boxster & Cayman Owners

Check plug tubes

Suggestion or failed attempt

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Reported fixes
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Unsuccessful attempts
1
Discussions
Read evidence and context

Explicit resolution reports before identified causes, performed actions and suggestions. Within each level, matching component labels precede direct query mentions and inherited thread context; successful versus unsuccessful discussion counts, owner confirmations and independent discussion support determine order. This is not a probability of success.

Discussions that contain suggestions
1

0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.

0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.

Suggestion · Original poster

And I'll definitely check the plug tubes for the oil leak.

Bluish white smoke while driving - 986 Forum - The Community for Porsche Boxster & Cayman Owners

Recommend purchasing the ln billet aluminum magnetic drain plug

Suggestion or failed attempt

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Unsuccessful attempts
1
Discussions
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Explicit resolution reports before identified causes, performed actions and suggestions. Within each level, matching component labels precede direct query mentions and inherited thread context; successful versus unsuccessful discussion counts, owner confirmations and independent discussion support determine order. This is not a probability of success.

Discussions that contain suggestions
1

0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.

0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.

Suggestion

Since you need to replace the drain plug, I highly recommend purchasing the LN billet aluminum magnetic drain plug.

Bluish white smoke while driving - 986 Forum - The Community for Porsche Boxster & Cayman Owners
Frequently discussed actions (10)

These are separate views of the same evidence. Frequency alone does not establish a fix, and these counts must not be added together.

Check plug tubes

No successful repair reported for this finding.

0
Reported fixes
0
Unsuccessful attempts
1
Discussions
Read evidence and context
Discussions that contain suggestions
1

0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.

0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.

Suggestion · Original poster

And I'll definitely check the plug tubes for the oil leak.

Bluish white smoke while driving - 986 Forum - The Community for Porsche Boxster & Cayman Owners

Recommend purchasing the ln billet aluminum magnetic drain plug

No successful repair reported for this finding.

0
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0
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1
Discussions
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Discussions that contain suggestions
1

0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.

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Suggestion

Since you need to replace the drain plug, I highly recommend purchasing the LN billet aluminum magnetic drain plug.

Bluish white smoke while driving - 986 Forum - The Community for Porsche Boxster & Cayman Owners

Replace drain plug, i highly

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Discussions that contain suggestions
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0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.

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Suggestion

Since you need to replace the drain plug, I highly recommend purchasing the LN billet aluminum magnetic drain plug.

Bluish white smoke while driving - 986 Forum - The Community for Porsche Boxster & Cayman Owners

Replace oil and aos

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Reported fixes
0
Unsuccessful attempts
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Discussions that performed work without a confirmed outcome
1

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0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.

Performed · outcome unconfirmed · Original poster

Okay so it's been a few weeks since I changed the oil and AOS.

Bluish white smoke while driving - 986 Forum - The Community for Porsche Boxster & Cayman Owners

Replace time

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Discussions that contain suggestions
1

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Suggestion

Very comforting at change time to see if the plug attracted metal which could tip you to internal problems.

Bluish white smoke while driving - 986 Forum - The Community for Porsche Boxster & Cayman Owners

Replace whole pan

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0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.

0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.

Suggestion · Original poster

I was very much considering replacing the whole pan but thankfully I got the plug out using one of those ez-out negative threaded drill bit things.

Bluish white smoke while driving - 986 Forum - The Community for Porsche Boxster & Cayman Owners

Replace whole sump pan if the plug is stripped

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Suggestion

I'd just replace the whole sump pan if the plug is stripped.

Bluish white smoke while driving - 986 Forum - The Community for Porsche Boxster & Cayman Owners

Replace yet

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Suggestion

Probably a good idea to do it while you have some down time if they haven't been replace yet.

Bluish white smoke while driving - 986 Forum - The Community for Porsche Boxster & Cayman Owners

Run engine too long oil will ruin cats

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Suggestion

If you run engine too long oil will ruin cats!

Bluish white smoke while driving - 986 Forum - The Community for Porsche Boxster & Cayman Owners

Run just fine

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Suggestion · Original poster

The engine temp was alright, and the car kept running just fine, but then when I stopped it I noticed the idle was pretty high (~1000rpm) and it felt erratic, jumping around a lot and vibrating.

Bluish white smoke while driving - 986 Forum - The Community for Porsche Boxster & Cayman Owners
Reported and suspected causes (2)

These are separate views of the same evidence. Frequency alone does not establish a fix, and these counts must not be added together.

drain plug; it's totally seized up

No successful repair reported for this finding.

1
Identified cause
0
Suspected cause
0
Reported fixes
Read evidence and context
Discussions that report identifying a cause
1

0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.

0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.

Reported cause · Original poster

But now the main issue is my drain plug; it's totally seized up.

Bluish white smoke while driving - 986 Forum - The Community for Porsche Boxster & Cayman Owners

good idea

No successful repair reported for this finding.

0
Identified cause
1
Suspected cause
0
Reported fixes
Read evidence and context
Discussions that suspect a cause
1

0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.

0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.

Suspected cause

Probably a good idea to do it while you have some down time if they haven't been replace yet.

Bluish white smoke while driving - 986 Forum - The Community for Porsche Boxster & Cayman Owners
Coverage and how to read this overview

Counts describe captured discussions, not unique people or a diagnosis. Author identities are not reliably stored. Exact duplicate evidence is counted once across matching discussions; one discussion counts at most once per action/state. Multiple repairs reported together remain a combination. Suggestions and failed attempts do not establish a fix. Matches cover whole discussions and can include related faults, model variants and incomplete threads.

20 eligible posts · 0 unverified posts · 1 discussions match the subject in their title or opening post.

  • 986Forum: 1 discussions

0 evidence records excluded for query context · 0 excluded by outcome qualification · 0 adjusted by outcome qualification.

0 acknowledgements have no verified action link; they do not establish a repair result.

Generation: 20261026T165820Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources

POST 1 / ORIGINAL POSTEROriginal post

Hi everybody, so a few days ago I was driving back from the shop literally on my way home to change the oil and do some routine maintenance, and out of nowhere a huge cloud of white smoke started pouring out of my exhaust. The engine temp was alright, and the car kept running just fine, but then when I stopped it I noticed the idle was pretty high (~1000rpm) and it felt erratic, jumping around a lot and vibrating. I decided to take it home regardless of the smoke since I was very close (probably not the best idea). Does anyone know what might cause this? I know it's I'm not giving you guys a lot to go on but what should I check? I read that this might be a bad air oil separator, but I have no idea. If it helps at all, it's always leaked a little bit of oil, and at one point it leaked coolant but a mechanic took care of that. But that mechanic also stripped out my drain plug so I'd rather not take it to him this time. I don't need to be driving it right now so I wanted to fix it myself if possible. It's an 01' Boxster S tiptronic with about 61k miles on it. Any help would be much appreciated.

POST 2Original post

AOS. Common issue. Oil being sprayed or released into the intake manifolds can do that and mess with idle of course. Oil leak can be RMS. Find the source. That can be fatal. May be plug tubes as well. Several easy fixes may cause a small leak.

POST 3Original post

Here's the AOS DIY at Pelican Parts. It has good pictures and info: Pelican Technical Article: Boxster Air / Oil Separator Replacement - 986 / 987 The spark plug tube are often a cause for an oil leak, but not for white smoke. Here's a great thread discussing the replacement of the tubes: http://986forum.com/forums/diy-project-guides/52150-spark-plug-tubes.html Probably a good idea to do it while you have some down time if they haven't been replace yet.

POST 4 / ORIGINAL POSTEROriginal post

Okay, thanks guys. I did some more looking and testing and I ordered a new aos. Hopefully it'll fix the problem. And I'll definitely check the plug tubes for the oil leak. But now the main issue is my drain plug; it's totally seized up. I can't even move it without digging into the threads. How do I get it out?? any special tools? Would heat help? I ordered a new one but I can't even figure out how I'd replace it!

POST 5Original post

When you say the mechanic stripped out the threads how did he fix it ? Did he butcher it by using JB Weld or similar ? You may be looking at a new oil pan I'm sure you could pick up a good used one.

POST 6Original post

Quotes source post: 440158

I'd just replace the whole sump pan if the plug is stripped. Check eBay or put a parts wanted post in the parts forum. (I have one off a dead engine sitting on a shelf, and I bet there are over a dozen other forum members with an extra pan.)

POST 7 / ORIGINAL POSTEROriginal post

I was very much considering replacing the whole pan but thankfully I got the plug out using one of those ez-out negative threaded drill bit things. The threads on the pan looks fine so the new plug should fit in fine when I get it. In the mean time, would you mind giving me some tips on how to remove the AOS? I took off the back right wheel and I'm working through there, but it's still a tight squeeze. I'm sure it's manageable, but is there an easier way?

POST 8Original post

Quotes source post: 440341

I did mine from the top. Pull the snorkel & see if any oil pools in the manifolds.

POST 9Original post

I had same problem in my '03 S. Can you remove the oil fill cap while idling? If not AOS bad. If you run engine too long oil will ruin cats!

POST 10Original post

Quotes source post: 440353

True enough, but if it hydrolocks on ingested oil, ruined cats will be the least of your problems.

POST 11Original post

Since you need to replace the drain plug, I highly recommend purchasing the LN billet aluminum magnetic drain plug. It is very beefy, won't strip like the factory plug and has a powerful magnet to attract any metal contained within the oil. Very comforting at change time to see if the plug attracted metal which could tip you to internal problems.

POST 12 / ORIGINAL POSTEROriginal post

Thanks again for all your help. I did order the magnetic drain plug too; I didn't wanna have the same issue as last time (also thank you for explaining what the magnet was for, haha I was confused). I also haven't started the car since I pulled it into the garage a week ago, but how can I tell if I already ruined my cats?

POST 13Original post

Quotes source post: 440364

jmatta: Even if the LN billet magnetic plug is beefy, you must be careful Not to over torque it, because It Will fail... guess how did I found out :-( .

POST 14 / ORIGINAL POSTEROriginal post

Quotes source post: 440501

What should I torque it to?

POST 15Original post

Torque to 19 ft/lb (25.8Nm) with a new washer.....

POST 16Original post

The new plug should come with a sticker over the hole to warn you to only torque to 19 ft/lbs (at least mine did).

POST 17Original post

Blue smoke is oil being burned in the combustion chamber(s). White smoke is typically coolant. If the AOS doesn't help you it is time to look at the head gaskets and pray you don't have a crack somewhere in the heads etc.

POST 18 / ORIGINAL POSTEROriginal post

Quotes source post: 440635

That would truly suck. And I have had coolant leaks in the past that a mechanic fixed, but I did lose a bit of coolant on my drive back. Is burning oil and coolant a common problem that cars can have at the same time? I know the exhaust was basically dripping with oil and it smelled a whole lot like oil, but my loss of coolant as well was a bit disturbing.

POST 19Original post

I Started my car up the other day after it sat for 5 months - I too noticed white smoke coming out of the exhaust right away (-1C outside). It was not as bad once the car warmed up though... thoughts of what this could be? Issue or non-issue?

POST 20 / ORIGINAL POSTEROriginal post

Okay so it's been a few weeks since I changed the oil and AOS. Everything's working pretty well except for a slightly distinct smell of fuel after starting the car. But surprisingly I haven't seen any oil leaking and it doesn't start burning oil if I drive it long distances like it used to. I'm a little curious about the smell though. Also, it's making a loud belt-whir kind of sound on cold start, but only sometimes. Any ideas?

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