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YOUR RESEARCHSmoke at high revs (5500+) - 986 Forum - The Community for Porsche Boxster & Cayman Owners
Reported or suspected cause
plastic hose connectors
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
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Reported cause
The biggest issue is with the plastic hose connectors.
Smoke at high revs (5500+) - 986 Forum - The Community for Porsche Boxster & Cayman Owners
Read full discussion summary
Leading evidence: 'plastic hose connectors' (1 discussions report identifying this cause; no attributable repair resolution). Across 1 matching discussions, the most frequently mentioned possible cause is 'plastic hose connectors' (1 discussions; 1 report identifying it and 0 suggest it). The most frequently discussed action is 'Check brakes (they were fine) and looked' (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.
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
I immediately shifted into 3rd, checked the brakes (they were fine) and looked for any signs of overheating or issues...
Smoke at high revs (5500+) - 986 Forum - The Community for Porsche Boxster & Cayman Owners
Use hose and while it worked
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
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
fashioned an "extension" fromn some expensive specialty auto hose (~$18 for the length I needed) using the old hose and while it worked, it looked like crap...
Smoke at high revs (5500+) - 986 Forum - The Community for Porsche Boxster & Cayman Owners
Outcome qualification: Negation, uncertainty or missing explicit repair resolution overrides the raw extraction signal.
Check oil
Suggestion or failed attempt
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 contain suggestions
1
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Suggestion
Also check for oil on the top of the engine if you see some it could be a few other things that wont be fun to replace while it still installed.
Smoke at high revs (5500+) - 986 Forum - The Community for Porsche Boxster & Cayman Owners
Replace while it still installed
Suggestion or failed attempt
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 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
Also check for oil on the top of the engine if you see some it could be a few other things that wont be fun to replace while it still installed.
Smoke at high revs (5500+) - 986 Forum - The Community for Porsche Boxster & Cayman Owners
Use hose and while it worked
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
fashioned an "extension" fromn some expensive specialty auto hose (~$18 for the length I needed) using the old hose and while it worked, it looked like crap...
Smoke at high revs (5500+) - 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.
9 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 · 1 adjusted by outcome qualification.
0 acknowledgements have no verified action link; they do not establish a repair result.
Generation: 20261026T130754Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources
Yesterday I finally took the Boxster out for a real workout. I was on a fairly tight, technical road that was mostly 2nd gear with some straightaways into 3rd gear. After about 30 minutes of this, and in a particularly tight downhill section where I was near redline, I noticed a considerable amount of white-ish smoke coming from the back of the car. I immediately shifted into 3rd, checked the brakes (they were fine) and looked for any signs of overheating or issues... and nada. She was cruising along comfortably at 3,000 RPM, temp gauge never went past just below 180 (typical for this car), no weird noises, nothing.
Considering I was in an area where there was no cell service, I decided to take it easy for the next few miles and once I got back to an area with cell service, I took her to redline a couple of times, and didn't notice a thing. No smoke, no issue, nothing.
Any ideas on what could have happened? She had been sitting without driving for about 2 weeks if that makes any difference, and I did notice a little more of a smokey start-up than is typical for this car.
Failing/failed AOS.
Also check for oil on the top of the engine if you see some it could be a few other things that wont be fun to replace while it still installed.
+1 on the AOS. Your spirited drive surely contained some corners where one might imagine oil following those G forces. When the AOS is not in top shape, some oil gets piped into the intake, burns during combustion and smoke results.
I was hoping that wasn't the case.
What I find peculiar is that I don't get the huge smoking startup I would expect with the AOS failure, but ce la vie, as they say. I now have my first project!
It is actually a really easy thing to do. The biggest issue is with the plastic hose connectors. If you break the long one that goes to bank 2 it's not going to be a fun day. The short one is easy to replace. I always do it with the engine warmed up to get the hoses disconnected. Usually only takes me a half hour to remove & install a new one.
It does require a different hose. I replaced mine... didn't want to spend the ~$35 for the part... fashioned an "extension" fromn some expensive specialty auto hose (~$18 for the length I needed) using the old hose and while it worked, it looked like crap... oredered from Pelican the proper hose.
You'll want that updated hose/part.
Just FYI. The hose you need is not the hose that goes to bank 2, although due to age it could be replaced. The hose you need is the short hose that goes to the manifold at the TB. Pelican has it listed as needed part with the AOS. I just saw you have a MY2000. You may not need anything. The hose was needed to convert flat AOS on the earlier cars to the new style AOS.
This is a source reference. Confirm exact model applicability in the original material.
