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997 blue smoke on start up

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

Discussion summary

YOUR RESEARCH997 blue smoke on start up

Reported or suspected cause

gone

Reported cause

No successful repair reported for this finding.

1
Identified cause
0
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 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

I had the same problem and replaced the AOS and now the problem is gone

Original post Read captured discussion
997 blue smoke on start up
Frequently discussed work

Check crankcase vacuum

No successful repair reported for this finding.

0
Reported fixes
0
Unsuccessful attempts
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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

You can check the crankcase vacuum to eliminate the possibility of the AOS.

Original post Read captured discussion
997 blue smoke on start up
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Leading evidence: 'gone' (1 discussions report identifying this cause; no attributable repair resolution). Across 1 matching discussions, the most frequently mentioned possible cause is 'gone' (1 discussions; 1 report identifying it and 0 suggest it). The most frequently discussed action is 'Check crankcase vacuum' (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.

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1 matching discussions · 6 captured posts examined · 0 partial discussions

Compare 4 other evidence results

Check crankcase vacuum

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

You can check the crankcase vacuum to eliminate the possibility of the AOS.

Original post Read captured discussion
997 blue smoke on start up

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

Could be overfilled with oil or maybe you need to replace AOS.

Original post Read captured discussion
997 blue smoke on start up

Replace aos is a good first move

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

I think (from what i learned form my mechanic) that when this happens changing the AOS is a good first move.

Original post Read captured discussion
997 blue smoke on start up

Use tapatalk

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

Sent from my Nexus 6 using Tapatalk

Original post Read captured discussion
997 blue smoke on start up
Frequently discussed actions (4)

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

Check crankcase vacuum

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

You can check the crankcase vacuum to eliminate the possibility of the AOS.

Original post Read captured discussion
997 blue smoke on start up

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

Could be overfilled with oil or maybe you need to replace AOS.

Original post Read captured discussion
997 blue smoke on start up

Replace aos is a good first move

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

I think (from what i learned form my mechanic) that when this happens changing the AOS is a good first move.

Original post Read captured discussion
997 blue smoke on start up

Use tapatalk

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

Sent from my Nexus 6 using Tapatalk

Original post Read captured discussion
997 blue smoke on start up
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.

gone

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

I had the same problem and replaced the AOS and now the problem is gone

Original post Read captured discussion
997 blue smoke on start up
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.

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

  • Pelican Parts: 1 discussions

0 evidence records excluded for query context · 1 excluded by outcome qualification · 0 adjusted by outcome qualification.

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

Generation: 20261026T205155Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources

POST 1 / ORIGINAL POSTEROriginal post

Guys I have an almost new Porsche with the 997 engine. A cloud of blue smoke comes out almost randomly when I start up the car, first comes out blue then it comes out white. I understand to a certain point this is normal for the flat six engines but this is to often. Do you have any advice?

POST 2Original post

Could be overfilled with oil or maybe you need to replace AOS. How many miles on the car? What is the service history?

POST 3Original post

Usually if it's really bad it'll misfire if it's the AOS. You can check the crankcase vacuum to eliminate the possibility of the AOS. CCV should be less than 6" of water right when you start it up. It should never go above that.

POST 4Original post

I had the same problem and replaced the AOS and now the problem is gone

POST 5Original post

Does it do it on every start up, or only after the car has sat for a couple of days? I think the latter is fairly normal, as some oil mist will get pulled through the AOS into the intake manifold. When my car sits for a several days, I'll get a puff of smoke on startup as I believe the oil vapor condenses on the walls of the intake, and given time, will flow down the intake to the intake valves. Its not a lot of oil, but it does make a good size puff of smoke that first start, but its only for a second right after start. After that, no more visible smoke if daily driven. My crankcase vacuum looks good, so I'm assuming the AOS is functioning OK. Sent from my Nexus 6 using Tapatalk

POST 6Original post

I think (from what i learned form my mechanic) that when this happens changing the AOS is a good first move. I had he same problem and now its gone.

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