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Oil on air intake

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3 captured repliesDiscussion pagination complete · Source accounts, not a confirmed diagnosis

THIS DISCUSSION / SOURCE-DERIVED OVERVIEW

Discussion summary

YOUR RESEARCHOil on air intake

Leading reported evidence

Check crankcase pressure and it shouldbe around 5" of water

Suggestion or failed attempt

No successful repair reported for this finding.

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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
Check your crankcase pressure and it shouldbe around 5" of water.
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Oil on air intake

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Leading evidence: 'Check crankcase pressure and it shouldbe around 5" of water' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Check crankcase pressure and it shouldbe around 5" of water' (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

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Replace air oil separator

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 it's much higher then you need to replace the AOS.
Original post Read captured discussion
Oil on air intake

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.

Check crankcase pressure and it shouldbe around 5" of water

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
Check your crankcase pressure and it shouldbe around 5" of water.
Original post Read captured discussion
Oil on air intake

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
If it's much higher then you need to replace the AOS.
Original post Read captured discussion
Oil on air intake

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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.

Rennlist: 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: 20261027T150039Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources

POST 1 / ORIGINAL POSTEROriginal post

Hi all, I just acquired � 2004 996 carrera 2. Great car i love it !! My problem is that i found oil under the intake (the T part). A bolt seems to be unscrewed and maybe that oil is coming from the Hydraulicoil r�servoir (really dont know what thats for) i cannit reach that bolt without removing all the intake... i joined � picture of the bolt Thanks

POST 2Original post

The oil crud on the intake T plenum usually means your AOS is underperforming or it has failed. Check your crankcase pressure and it shouldbe around 5" of water. If it's much higher then you need to replace the AOS. To tighten that bolt, you may need to remove the throttle body and the T plenum to create more space.

POST 3 / ORIGINAL POSTEROriginal post

Thanks for the quick reply, ive read about the aos and you might be right. But my car is smoking white only at start up (and always after rain) and im pretty sure that there is too much oil in engine, maybe ( i hope) thats the problem...

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