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Now THAT’s a smoke bomb! - 986 Forum - The Community for Porsche Boxster & Cayman Owners

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YOUR RESEARCHNow THAT’s a smoke bomb! - 986 Forum - The Community for Porsche Boxster & Cayman Owners

Reported or suspected cause

passenger side scavenging pump was incorrectly indexed), i went

Suggestion or failed attempt

No successful repair reported for this finding.

0
Identified cause: 1
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 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
Before I figured out why my car was producing huge smoke bombs (it turned out to be passenger side scavenging pump was incorrectly indexed), I went to a track day at Pacific Raceways near Seattle and didn't even get through the first lap before they red-flagged the session.
Original post Read captured discussion
Now THAT’s a smoke bomb! - 986 Forum - The Community for Porsche Boxster & Cayman Owners

Frequently discussed work

Run oil at the half way mark seems

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 · Original poster
Running oil at the half way mark seems to be the key.
Original post Read captured discussion
Now THAT’s a smoke bomb! - 986 Forum - The Community for Porsche Boxster & Cayman Owners

Read full discussion summary

Leading evidence: 'passenger side scavenging pump was incorrectly indexed), i went' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, the most frequently mentioned possible cause is 'passenger side scavenging pump was incorrectly indexed), i went' (1 discussions; 0 report identifying it and 1 suggest it). The most frequently discussed action is 'Run oil at the half way mark seems' (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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Read captured replies

1 matching discussions · 5 captured posts examined · 0 partial discussions

Compare 2 other evidence results

Run oil at the half way mark seems

Suggestion or failed attempt

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
Running oil at the half way mark seems to be the key.
Original post Read captured discussion
Now THAT’s a smoke bomb! - 986 Forum - The Community for Porsche Boxster & Cayman Owners

Run with no apparent problems so i signalled the flagger

Suggestion or failed attempt

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
However, it was still running with no apparent problems so I signalled the flagger to go back on track.
Original post Read captured discussion
Now THAT’s a smoke bomb! - 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.

Run oil at the half way mark seems

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
Running oil at the half way mark seems to be the key.
Original post Read captured discussion
Now THAT’s a smoke bomb! - 986 Forum - The Community for Porsche Boxster & Cayman Owners

Run with no apparent problems so i signalled the flagger

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
However, it was still running with no apparent problems so I signalled the flagger to go back on track.
Original post Read captured discussion
Now THAT’s a smoke bomb! - 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.

passenger side scavenging pump was incorrectly indexed), i went

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
Before I figured out why my car was producing huge smoke bombs (it turned out to be passenger side scavenging pump was incorrectly indexed), I went to a track day at Pacific Raceways near Seattle and didn't even get through the first lap before they red-flagged the session.
Original post Read captured discussion
Now THAT’s a smoke bomb! - 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.

5 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: 20261026T194705Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources

POST 1 / ORIGINAL POSTEROriginal post

Just back from my first track day since I blew up my engine last September. New motor ran well with a couple of incidents. I am using the MantisSport deep sump and I had slightly overfilled the oil. On my second session, I was starting to push it (new motor and all). Suddenly boom, I look in the mirror and see nothing but smoke. I pulled off the track thinking «oh darn», I’ve blown another engine! However, it was still running with no apparent problems so I signalled the flagger to go back on track. Then I saw the red flags were out so I immediately pulled back off the track thinking, oh no, there’s been a crash! So the ambulance comes by me then stops, backs up and stops beside me! They get out, fire extinguishers in hand and want me to open the hood! Sorry to have caused so much consternation guys, but I’m not on fire! Next session went fine after removing a good half litre of oil. Running oil at the half way mark seems to be the key. Wish that motorsport AOS wasn’t so damned expensive!

POST 2Original post

check out the 996 forum on rennlist - a couple of interesting threads on the aos and alternatives (ie, venting the aos to the air box).

POST 3Original post

I accidentally overfilled my oil before my first track day and blew a huge smoke bomb just like that I dropped the oil filter to remove a little oil, and since then have filled halfway (with my LN Deep sump I put in 10 liters of oil that takes me right up to halfway). Toward the end I experimented with running it a little fuller but discovered that it pretty quickly goes back to half due to oil ingenstion through the AOS (presumably) and that half seems to be the sweet spot. Still on the same AOS nearly 100 track days later

POST 4 / ORIGINAL POSTEROriginal post

Quotes source post: 599989

Actually, it may have been you that put me on to that half way solution. I have no idea why I moved away from that this past event.

POST 5Original post

Before I figured out why my car was producing huge smoke bombs (it turned out to be passenger side scavenging pump was incorrectly indexed), I went to a track day at Pacific Raceways near Seattle and didn't even get through the first lap before they red-flagged the session. They thought I had blown the engine and oiled down the track. Embarrassing to say the least.

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