Planet-9

987.2 Oil Leak from Brown Cam Plug

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Original source

3 captured repliesPartial discussion capture · Source accounts, not a confirmed diagnosis

THIS DISCUSSION / SOURCE-DERIVED OVERVIEW

Discussion summary

YOUR RESEARCH987.2 Oil Leak from Brown Cam Plug

Leading reported evidence

Test crankcase pressure

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
Does anyone know the procedure for testing crankcase pressure on 9A1?
Original post Read captured discussion
987.2 Oil Leak from Brown Cam Plug

Read full discussion summary

Leading evidence: 'Test crankcase pressure' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Test crankcase pressure' (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.

Read captured replies

1 matching discussions · 3 captured posts examined · 1 partial discussions

Compare 1 other evidence results

Use manometer

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
Search youtube for Tony Callas, where he has some professional videos, including one on crankcase issues and using a manometer.
Original post Read captured discussion
987.2 Oil Leak from Brown Cam Plug

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.

Test crankcase pressure

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
Does anyone know the procedure for testing crankcase pressure on 9A1?
Original post Read captured discussion
987.2 Oil Leak from Brown Cam Plug

Use manometer

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
Search youtube for Tony Callas, where he has some professional videos, including one on crankcase issues and using a manometer.
Original post Read captured discussion
987.2 Oil Leak from Brown Cam Plug

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.

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

Planet-9: 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: 20261026T212127Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources

POST 1Original post

I pulled the bulkhead panel off my 2.9 Cayman to inspect and try and work out some other issues. To my displeasure, I noticed oil seepage from what I'm assuming is the passenger-side cam shaft plug (brown plug on lower right of engine). I also noticed a lot of sludge around my drivers-side timing chain tensioner, although that was dry and crusty. I've done all the reading I can and I don't see any mentions of leaks on 9A1s, but I do see that M9X cars had issues with crankcase pressure due to AOS failures. The car only has 67K on the clock, and I have no AOS symptoms, so I'm not ready to assume that's the issue. Does anyone know the procedure for testing crankcase pressure on 9A1? I'd like to avoid replacing either the AOS or the plug without knowing why it's leaking. I'd also like to avoid having it pop out on the road LOL. Thanks in advance!

POST 2Original post

I cannot address the 9A1 directly but pressure is pressure. For my 07 Cayman S I have modified the oil fill cap to have a nipple, which I attach to a manometer. This will directly read the state of affairs in the crankcase. Mine develops approx. negative 4 in/H2O, at idle. Of course, any positive value is a sign of something not right. Search youtube for Tony Callas, where he has some professional videos, including one on crankcase issues and using a manometer.

POST 3Original post

Thanks for the advice. I may have stumbled on some baseline in/H20 readings for the 9A1, so I'll give those a shot.

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