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Replacing vario cam chains and guides?

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

THIS DISCUSSION / SOURCE-DERIVED OVERVIEW

Discussion summary

YOUR RESEARCHReplacing vario cam chains and guides?

Reported or suspected cause

items you seek

Reported cause

No successful repair reported for this finding.

1
Identified cause: 0
Suspected cause: 0
Reported fixes

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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 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
Given the expense of replacing the chains and guides (and tensioners too while you are there) you need to be sure the whine is not normal and is due to the items you seek to replace.
Original post Read captured discussion
Replacing vario cam chains and guides?

Frequently discussed work

Clean filter and sump

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 · Original poster
I have 135k on my 99 C4 it runs well, has a clean filter and sump but makes a bit more of the 911 whine than I think is normal.
Original post Read captured discussion
Replacing vario cam chains and guides?

Read full discussion summary

Leading evidence: 'items you seek' (1 discussions report identifying this cause; no attributable repair resolution). Across 1 matching discussions, the most frequently mentioned possible cause is 'items you seek' (1 discussions; 1 report identifying it and 0 suggest it). The most frequently discussed action is 'Clean filter and sump' (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 · 5 captured posts examined · 0 partial discussions

Compare 4 other evidence results

Use stethoscope

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 · Original poster
Used a stethoscope on the IMSB area.
Original post Read captured discussion
Replacing vario cam chains and guides?

Clean filter and sump

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
I have 135k on my 99 C4 it runs well, has a clean filter and sump but makes a bit more of the 911 whine than I think is normal.
Original post Read captured discussion
Replacing vario cam chains and guides?

Replace 4 and 5 chains and guides

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
Wondering about changing the 4 and 5 chains and guides.
Original post Read captured discussion
Replacing vario cam chains and guides?

Run continuously is it

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
The SAI isn't running continuously is it ?
Original post Read captured discussion
Replacing vario cam chains and guides?

Frequently discussed actions (4)

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

Clean filter and sump

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
I have 135k on my 99 C4 it runs well, has a clean filter and sump but makes a bit more of the 911 whine than I think is normal.
Original post Read captured discussion
Replacing vario cam chains and guides?

Replace 4 and 5 chains and guides

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
Wondering about changing the 4 and 5 chains and guides.
Original post Read captured discussion
Replacing vario cam chains and guides?

Run continuously is it

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
The SAI isn't running continuously is it ?
Original post Read captured discussion
Replacing vario cam chains and guides?

Use stethoscope

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 · Original poster
Used a stethoscope on the IMSB area.
Original post Read captured discussion
Replacing vario cam chains and guides?

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.

items you seek

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
Given the expense of replacing the chains and guides (and tensioners too while you are there) you need to be sure the whine is not normal and is due to the items you seek to replace.
Original post Read captured discussion
Replacing vario cam chains and guides?

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.

5 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: 20261026T130754Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources

POST 1 / ORIGINAL POSTEROriginal post

I have 135k on my 99 C4 it runs well, has a clean filter and sump but makes a bit more of the 911 whine than I think is normal. Wondering about changing the 4 and 5 chains and guides. JR recomended this on his site for the 5 chain motors over 40K miles. However no one ever mentioned it here. The parts are cheap and it looks like can be done with the engine in the car.

POST 2Original post

With that mileage, I'd say its a safe bet they are deteriorated. Having done this a couple times, I would not even consider attempting with the engine in the car.... But I'm sure it can be done.

POST 3Original post

Quotes source post: 11964535

Given the expense of replacing the chains and guides (and tensioners too while you are there) you need to be sure the whine is not normal and is due to the items you seek to replace. Whine is not a noise generally associated with chains/guides/tensioners in need of replacing. Absent any chain guide composite plastic bits in the oil filter housing oil or filter element, absent any signs of tensioner o-ring material in the oil filter housing oil or filter element I think think the chains/guides/tensioners are not the cause of the whine. BTW, I have had worn tires or misaligned tires be the source of considerable whine to the point one time I had the car in for suspected bad wheel bearings.

POST 4 / ORIGINAL POSTEROriginal post

What does make a M96 whine? I have checked out all the acessories, ran it without the belt, does not change with the clutch in. Used a stethoscope on the IMSB area. It is not strange noise, just the normal porsche flat6 whine but louder.

POST 5Original post

Oil pump? Try the stethoscope again and give us a hint of where the whine comes from. Since you had the accessory drive disabled it can't be W/P P/S The SAI isn't running continuously is it ? Remove fuse to disable- you'll get a CEL but ignore/delete. Pilot bearing?

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