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AOS warning signs? - 986 Forum - The Community for Porsche Boxster & Cayman Owners

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YOUR RESEARCHAOS warning signs? - 986 Forum - The Community for Porsche Boxster & Cayman Owners

Reported or suspected cause

completely normal behavior

Reported cause

No successful repair reported for this finding.

1
Identified cause: 0
Suspected cause: 0
Reported fixes

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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 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
Madtown, without properly diagnosing as suggested by JFP, it sounds to me like your issue is completely normal behavior for a Boxster to exhibit after sitting for a week based on my experience.
Original post Read captured discussion
AOS warning signs? - 986 Forum - The Community for Porsche Boxster & Cayman Owners

Frequently discussed work

Use of your vehicle

No successful repair reported for this finding.

0
Reported fixes: 0
Unsuccessful attempts: 1
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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.

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

Suggestion
If you notice it getting worse or happening with more frequent use of your vehicle, then it may be time to diagnose.
Original post Read captured discussion
AOS warning signs? - 986 Forum - The Community for Porsche Boxster & Cayman Owners

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Leading evidence: 'completely normal behavior' (1 discussions report identifying this cause; no attributable repair resolution). Across 1 matching discussions, the most frequently mentioned possible cause is 'completely normal behavior' (1 discussions; 1 report identifying it and 0 suggest it). The most frequently discussed action is 'Use of your vehicle' (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 · 3 captured posts examined · 0 partial discussions

Compare 1 other evidence results

Use of your vehicle

Suggestion or failed attempt

No successful repair reported for this finding.

0
Reported fixes: 0
Unsuccessful attempts: 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.

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

Suggestion
If you notice it getting worse or happening with more frequent use of your vehicle, then it may be time to diagnose.
Original post Read captured discussion
AOS warning signs? - 986 Forum - The Community for Porsche Boxster & Cayman Owners

Frequently discussed actions (1)

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

Use of your vehicle

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
If you notice it getting worse or happening with more frequent use of your vehicle, then it may be time to diagnose.
Original post Read captured discussion
AOS warning signs? - 986 Forum - The Community for Porsche Boxster & Cayman Owners

Reported and suspected causes (1)

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

completely normal behavior

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
Madtown, without properly diagnosing as suggested by JFP, it sounds to me like your issue is completely normal behavior for a Boxster to exhibit after sitting for a week based on my experience.
Original post Read captured discussion
AOS warning signs? - 986 Forum - The Community for Porsche Boxster & Cayman Owners

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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.

3 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: 20261026T094842Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources

POST 1 / ORIGINAL POSTEROriginal post

I have a 2002 Boxster S with 28k miles on it. I've had it about a year. I noticed lately when I go out of town and/or it sits for about a week or so, I get a moderate puff of white smoke when it starts. And that's it. It doesn't keep smoking, and it doesn't do it when starting the next day or two days after that. Only when it sites for over a week. I've seen videos of a failed AOS where the smoke just pours out and keeps pouring out. It's not doing that. It is not my intention that it be a garage queen. I just don't have a need to drive on a daily basis and I frequently go out of town for work for a week or even a month at a time. Is this initial puff a sign that my AOS is starting to fail? Or just normal for a car that sits.

POST 2Original post

The best warning sign of the AOS condition is to measure the sump vacuum with a digital manometer; if the vacuum level exceeds 6 inches of water with the engine fully warmed up, the AOS is on its way out….

POST 3Original post

Madtown, without properly diagnosing as suggested by JFP, it sounds to me like your issue is completely normal behavior for a Boxster to exhibit after sitting for a week based on my experience. I suggest keeping an eye on it for the time being. If you notice it getting worse or happening with more frequent use of your vehicle, then it may be time to diagnose.

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