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Irritation noise on startup - 986 Forum - The Community for Porsche Boxster & Cayman Owners

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

THIS DISCUSSION / SOURCE-DERIVED OVERVIEW

Discussion summary

YOUR RESEARCHIrritation noise on startup - 986 Forum - The Community for Porsche Boxster & Cayman Owners

Reported or suspected cause

be: 1) grooves in cam pulley had mostly filled

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
Turned out to be: 1) grooves in cam pulley had mostly filled with rubber.
Original post Read captured discussion
Irritation noise on startup - 986 Forum - The Community for Porsche Boxster & Cayman Owners

Frequently discussed work

Fill with rubber

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
Turned out to be: 1) grooves in cam pulley had mostly filled with rubber.
Original post Read captured discussion
Irritation noise on startup - 986 Forum - The Community for Porsche Boxster & Cayman Owners

Read full discussion summary

Leading evidence: 'be: 1) grooves in cam pulley had mostly filled' (1 discussions report identifying this cause; no attributable repair resolution). Across 1 matching discussions, the most frequently mentioned possible cause is 'be: 1) grooves in cam pulley had mostly filled' (1 discussions; 1 report identifying it and 0 suggest it). The most frequently discussed action is 'Fill with rubber' (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 · 4 captured posts examined · 0 partial discussions

Compare 2 other evidence results

Fill with rubber

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
Turned out to be: 1) grooves in cam pulley had mostly filled with rubber.
Original post Read captured discussion
Irritation noise on startup - 986 Forum - The Community for Porsche Boxster & Cayman Owners

Run ....you thinking water pump or

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 · Original poster
The couplers were in good condition, I reinstalled them using brand new stainless bolts....I have not tried removing the belt and running....you thinking water pump or ???
Original post Read captured discussion
Irritation noise on startup - 986 Forum - The Community for Porsche Boxster & Cayman Owners

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.

Fill with rubber

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
Turned out to be: 1) grooves in cam pulley had mostly filled with rubber.
Original post Read captured discussion
Irritation noise on startup - 986 Forum - The Community for Porsche Boxster & Cayman Owners

Run ....you thinking water pump or

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 · Original poster
The couplers were in good condition, I reinstalled them using brand new stainless bolts....I have not tried removing the belt and running....you thinking water pump or ???
Original post Read captured discussion
Irritation noise on startup - 986 Forum - The Community for Porsche Boxster & Cayman Owners

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.

be: 1) grooves in cam pulley had mostly filled

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
Turned out to be: 1) grooves in cam pulley had mostly filled with rubber.
Original post Read captured discussion
Irritation noise on startup - 986 Forum - The Community for Porsche Boxster & Cayman Owners

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.

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

986Forum: 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
When those three things were fixed it was silent.
Original post Read captured discussion
Quoted acknowledgement is not verified as the original poster

Generation: 20261027T003124Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources

POST 1 / ORIGINAL POSTEROriginal post

It is a tinny noise and when you rev the engine sitting still you hear it...when on the road and really get on it you do not hear it. When I got my secondary cat delete pipes a lot of it went away...but not all....It really sounds like muffler internal noise...perhaps a loose baffle... Does anyone else have this ?? THanks Dwight

POST 2Original post

Heat shields? Muffler going bad? Loose coupler? Sure it's exhaust? Tried removing the belt and running it for a minute or two?

POST 3 / ORIGINAL POSTEROriginal post

Thanks Tim, not the heat shields...had all that stuff off when I removed the rear axles for my bearing job. The couplers were in good condition, I reinstalled them using brand new stainless bolts....I have not tried removing the belt and running....you thinking water pump or ???

POST 4Original post

Quotes source post: 450181

I had terrible start up noise. Turned out to be: 1) grooves in cam pulley had mostly filled with rubber. Made squishy sound or squawk sound 2) alternator bearing bad and made crunchy / rattle sound 3) water pump vanes rubbing on block opening until car warmed up. All startup noises, but alternator got worse. Made a symphony of noises it turned out, but the work truck is a Ford so I was used to that. When those three things were fixed it was silent.

This is a source reference. Confirm exact model applicability in the original material.