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exhaust smoke 99 boxster - 986 Forum - The Community for Porsche Boxster & Cayman Owners

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2 captured repliesDiscussion pagination complete · Source accounts, not a confirmed diagnosis
THIS DISCUSSION / SOURCE-DERIVED OVERVIEW

Discussion summary

YOUR RESEARCHexhaust smoke 99 boxster - 986 Forum - The Community for Porsche Boxster & Cayman Owners

Leading reported evidence

Replace air oil separator (aos)

Performed · outcome unconfirmed

No successful repair reported for this finding.

0
Reported fixes
0
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 performed work without a confirmed outcome
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.

Performed · outcome unconfirmed · Original poster

Thanks to this forum I found information about the possible causes and repairs of the issue, I replaced the air oil separator (aos) with a brand new oem part, after installing the aos the car continued to smoke for about 15 mins at idle and then it continued to smoke intermittently and it hasn't changed, mostly it smokes while waiting at a light or suddenly while driving, it comes and goes.

Original post Read captured discussion
exhaust smoke 99 boxster - 986 Forum - The Community for Porsche Boxster & Cayman Owners
Frequently discussed work

Replace air oil separator

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

I've driven the car for about 80 miles after replacing the aos for what I know the car has been sitting for about a year, it idles fine, it runs fine, is not consuming water, the check engine light tuned off by itself.

Original post Read captured discussion
exhaust smoke 99 boxster - 986 Forum - The Community for Porsche Boxster & Cayman Owners
Read full discussion summary

Leading evidence: 'Replace air oil separator (aos)' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Replace air oil separator' (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.

Source reports, not a diagnosis or a success probability. Counts refer to discussions and can overlap.

Read captured replies

1 matching discussions · 2 captured posts examined · 0 partial discussions

Compare 1 other evidence results

Replace air oil separator

Suggestion or failed attempt

No successful repair reported for this finding.

0
Reported fixes
0
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

I've driven the car for about 80 miles after replacing the aos for what I know the car has been sitting for about a year, it idles fine, it runs fine, is not consuming water, the check engine light tuned off by itself.

Original post Read captured discussion
exhaust smoke 99 boxster - 986 Forum - The Community for Porsche Boxster & Cayman Owners
Frequently discussed actions (2)

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

Replace air oil separator

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

I've driven the car for about 80 miles after replacing the aos for what I know the car has been sitting for about a year, it idles fine, it runs fine, is not consuming water, the check engine light tuned off by itself.

Original post Read captured discussion
exhaust smoke 99 boxster - 986 Forum - The Community for Porsche Boxster & Cayman Owners

Replace air oil separator (aos)

No successful repair reported for this finding.

0
Reported fixes
0
Unsuccessful attempts
1
Discussions
Read evidence and context
Discussions that performed work without a confirmed outcome
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.

Performed · outcome unconfirmed · Original poster

Thanks to this forum I found information about the possible causes and repairs of the issue, I replaced the air oil separator (aos) with a brand new oem part, after installing the aos the car continued to smoke for about 15 mins at idle and then it continued to smoke intermittently and it hasn't changed, mostly it smokes while waiting at a light or suddenly while driving, it comes and goes.

Original post Read captured discussion
exhaust smoke 99 boxster - 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.

2 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: 20261026T213932Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources

POST 1 / ORIGINAL POSTEROriginal post

Hi, I recently bought a 99 boxster with 80k miles as a project car, the check engine light was on and constant white/grey smoke coming out of the exhaust. Thanks to this forum I found information about the possible causes and repairs of the issue, I replaced the air oil separator (aos) with a brand new oem part, after installing the aos the car continued to smoke for about 15 mins at idle and then it continued to smoke intermittently and it hasn't changed, mostly it smokes while waiting at a light or suddenly while driving, it comes and goes. I've driven the car for about 80 miles after replacing the aos for what I know the car has been sitting for about a year, it idles fine, it runs fine, is not consuming water, the check engine light tuned off by itself. If anybody has any advise it will be much appreciated, thanks.

This is a source reference. Confirm exact model applicability in the original material.