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Camshaft Repairs - Puck Replacement

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

THIS DISCUSSION / SOURCE-DERIVED OVERVIEW

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YOUR RESEARCHCamshaft Repairs - Puck Replacement

Leading reported evidence

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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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
Easy to replace the AOS when the engine is out...otherwise, it is a pain, Do a search, plenty of info to read there for you.
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Camshaft Repairs - Puck Replacement

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Leading evidence: 'Replace air oil separator' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Replace air oil separator' (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 · 7 captured posts examined · 0 partial discussions

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Run engine

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
Post an audio clip if you can but keep running the engine to a minimum.
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Camshaft Repairs - Puck Replacement

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.

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
Easy to replace the AOS when the engine is out...otherwise, it is a pain, Do a search, plenty of info to read there for you.
Original post Read captured discussion
Camshaft Repairs - Puck Replacement

Run engine

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
Post an audio clip if you can but keep running the engine to a minimum.
Original post Read captured discussion
Camshaft Repairs - Puck Replacement

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.

7 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: 20261026T063944Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources

POST 1 / ORIGINAL POSTEROriginal post

There is some engine rattle coming from the rear corner in my 996.

POST 2Original post

What is he referring to as "the puck"? Can you post an audio clip of this sound?

POST 3Original post

Quotes source post: 8455003

What are the fault codes? Post an audio clip if you can but keep running the engine to a minimum. Sincerely, Macster.

POST 4Original post

Sounds like a bad AOS to me. They are both in the same general area, just the AOS is higher up. Some failures on the AOS will make a whining noise. Rick 99 996C4 87 944S

POST 5Original post

Does the whine go away after the car is warm? That high pitch whine sounds like the auxiliary air pump. The aux. air pump shuts off once the engine has reached a certain temp. When it's on, it produces a very similar "whine" noise as in our video. See thread below (especially post #1, 2 and 19). Perhaps the pump is on its way out. Good luck. https://rennlist.com/forums/showthre...ferrerid=93573

POST 6Original post

This doesn't sound like a vane cell adjuster issue to me. It could be the AOS, troubleshooting that is simple, though. The CEL code and the noise may not be related-

POST 7Original post

Easy to replace the AOS when the engine is out...otherwise, it is a pain, Do a search, plenty of info to read there for you.

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