Planet-9

Recurring Camshaft Plug Issue

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

THIS DISCUSSION / SOURCE-DERIVED OVERVIEW

Discussion summary

YOUR RESEARCHRecurring Camshaft Plug Issue

Reported or suspected cause

air oil separator

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
It turns out it was the AOS.
Original post Read captured discussion
Recurring Camshaft Plug Issue

Frequently discussed work

Check next

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
Something seems to be causing too much pressure but not sure what to check next.
Original post Read captured discussion
Recurring Camshaft Plug Issue

Read full discussion summary

Leading evidence: 'air oil separator' (1 discussions report identifying this cause; no attributable repair resolution). Across 1 matching discussions, the most frequently mentioned possible cause is 'air oil separator' (1 discussions; 1 report identifying it and 0 suggest it). The most frequently discussed action is 'Check next' (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 · 8 captured posts examined · 1 partial discussions

Compare 4 other evidence results

Replace about 4000 miles

Performed · outcome unconfirmed

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
The AOS was also replaced about 4000 miles before this started happening.
Original post Read captured discussion
Recurring Camshaft Plug Issue

Replace water pump

Performed · outcome unconfirmed

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
Remove excess sealant from a replaced water pump
Original post Read captured discussion
Recurring Camshaft Plug Issue

Replace with an oem part

Performed · outcome unconfirmed

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
I'd never heard of this issue before, but everything's running smoothly now that the plug has been reinstalled and the AOS replaced with an OEM part.
Original post Read captured discussion
Recurring Camshaft Plug Issue

Run into the same problem

Performed · outcome unconfirmed

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
I am running into the same problem, with the same things tried by the dealership.
Original post Read captured discussion
Recurring Camshaft Plug Issue

Frequently discussed actions (10)

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

Check next

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
Something seems to be causing too much pressure but not sure what to check next.
Original post Read captured discussion
Recurring Camshaft Plug Issue

Fill little bit less than max

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
This is also what causes damage to the AOS, typically, but the key is to fill a little bit less than max...
Original post Read captured discussion
Recurring Camshaft Plug Issue

Inspect timing belt and valve lever

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
Inspect the timing belt and valve lever for issues, and none found
Original post Read captured discussion
Recurring Camshaft Plug Issue

Replace about 4000 miles

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
The AOS was also replaced about 4000 miles before this started happening.
Original post Read captured discussion
Recurring Camshaft Plug Issue

Replace water pump

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
Remove excess sealant from a replaced water pump
Original post Read captured discussion
Recurring Camshaft Plug Issue

Replace with an oem part

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
I'd never heard of this issue before, but everything's running smoothly now that the plug has been reinstalled and the AOS replaced with an OEM part.
Original post Read captured discussion
Recurring Camshaft Plug Issue

Run 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
Run a crankcase pressure test - no issues
Original post Read captured discussion
Recurring Camshaft Plug Issue

Run into the same problem

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
I am running into the same problem, with the same things tried by the dealership.
Original post Read captured discussion
Recurring Camshaft Plug Issue

Run smoothly now

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'd never heard of this issue before, but everything's running smoothly now that the plug has been reinstalled and the AOS replaced with an OEM part.
Original post Read captured discussion
Recurring Camshaft Plug Issue

Test car

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
They road tested your car for 500 miles??
Original post Read captured discussion
Recurring Camshaft Plug Issue

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.

air oil separator

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
It turns out it was the AOS.
Original post Read captured discussion
Recurring Camshaft Plug Issue

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.

8 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.

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

Outcome without a verified action link
At the time the AOS was only a few months old without any obvious issues, but as a last resort the dealership replaced it and the issue went away.
Original post Read captured discussion
No unique explicit quoted action; no causal link assigned

Generation: 20261026T213932Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources

POST 1Original post

Have a 2005 Boxster with 85K miles and one of the camshaft plugs has come out multiple times. Any idea what's causing this? Dealer has tried a number of fixes and tests, but the plug eventually comes back out after driving for a few weeks. The dealer has tried the following with no luck: Remove excess sealant from the plug Inspect the timing belt and valve lever for issues, and none found Run a crankcase pressure test - no issues Remove excess sealant from a replaced water pump Cement the plug into the camshaft (still came out) The AOS was also replaced about 4000 miles before this started happening. Something seems to be causing too much pressure but not sure what to check next. Any ideas what to look for?

POST 2Original post

I am running into the same problem, with the same things tried by the dealership. Did you ever figure out the reason?

POST 3Original post

I certainly don't know myself, but as I recall in reading about this type of issue (just for info's sake) I seem to recall someone said that an overfilled oil system can lead to this type of issue as well. This is also what causes damage to the AOS, typically, but the key is to fill a little bit less than max... most people reported 1-bar below max is what they fill to. Again, I have no explanation for why, but just wanted to repeat info I am remembering (vaguely!)...

POST 4Original post

From what I've read, it is usually caused by a bad AOS. When the AOS was replaced, what brand was used? I've also read that the cheap brand (URO?) fails quickly.

POST 5Original post

It turns out it was the AOS. At the time the AOS was only a few months old without any obvious issues, but as a last resort the dealership replaced it and the issue went away. Before returning the car to me they drove the car for about 50 miles a day for 2 weeks to make sure everything was working and I haven’t had any issues since then.

POST 6Original post

They road tested your car for 500 miles?? Really?? No thanks.

POST 7Original post

I suspect you're a victim of the Infant Mortality part of a bathtub curve for mechanical devices..

POST 8Original post

I just had the same exact failure on my 2005 Boxster w/ 119k miles. Pulled into a parking spot and discovered a massive oil leak, which ended up stemming from a missing camshaft plug. The aftermarket AOS I put in the car roughly 2 years ago apparently wasn't up to spec, and the excess pressure eventually caused the plug to pop out. I'd never heard of this issue before, but everything's running smoothly now that the plug has been reinstalled and the AOS replaced with an OEM part.

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