Pelican Parts

2003 C4S, low miles and noisy exhaust?

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

THIS DISCUSSION / SOURCE-DERIVED OVERVIEW

Discussion summary

YOUR RESEARCH2003 C4S, low miles and noisy exhaust?

Leading reported evidence

Use mobil 1 in this oil

Performed · outcome unconfirmed

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 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 Mobil 1 in this oil change.
Original post Read captured discussion
2003 C4S, low miles and noisy exhaust?

Frequently discussed work

Clean oil is

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
No issues - comments about how clean the oil is.
Original post Read captured discussion
2003 C4S, low miles and noisy exhaust?

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

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Clean oil is

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
No issues - comments about how clean the oil is.
Original post Read captured discussion
2003 C4S, low miles and noisy exhaust?

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.

Clean oil is

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
No issues - comments about how clean the oil is.
Original post Read captured discussion
2003 C4S, low miles and noisy exhaust?

Use mobil 1 in this oil

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 Mobil 1 in this oil change.
Original post Read captured discussion
2003 C4S, low miles and noisy exhaust?

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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.

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

Pelican Parts: 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: 20261027T020439Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources

POST 1 / ORIGINAL POSTEROriginal post

Hello, team. I have a great car. ‘03 C4S that I bought with < 9,000 original miles. I am the third owner and received all documentation with the car. Car is equipped with PSE PSE works as it should. Button is functional and causes the “wonderful” sound to change to quiet as it should. I went through a typical “new to me” oil change and analysis of the old oil through Blackstone. No issues - comments about how clean the oil is. Did the air filter and accessory belt at the same time. Also added a magnetic drain screw. Used Mobil 1 in this oil change. Car was updated with the LN engineering IMS bearing during previous owner’s tenure. Previous owner kept car pristine and put very few miles on during his ownership (2007 to 2017). Sounds like it’s not been driven in the rain. Anyway - The car sounds noisy: Seems to be a random “ball bearings in a tin can” noise coming from mufflers. Seems to be increasing with amount I drive it. This sound is not a timing chain slap type of a sound. Good oil pressure. Good performance. No CEL (and the lights are all active when turning on ignition switch). Does the 996 (and maybe specifically the PSE option) typically exhibit a baffle coming loose in the muffler? Is this something that any of you guys and gals may have experienced in the past? I’d hate to go down some goofy (example - cam chain tensioner) rabbit hole and spend tons of money to find a problem that really isn’t one at all. But - you really don’t want to continue to drive something with an imminent failure under the deck lid. Any experiences are of interest. Thank you.

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