Rennlist

"Lifter" noise (?)

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

THIS DISCUSSION / SOURCE-DERIVED OVERVIEW

Discussion summary

YOUR RESEARCH"Lifter" noise (?)

Leading reported evidence

Check belts, fuel cap (it had been

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
At that time I pulled over, suspected the quality of gas, checked the belts, fuel cap (it had been replaced with the recall), oil pressure and temps were fine.
Original post Read captured discussion
"Lifter" noise (?)

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Leading evidence: 'Check belts, fuel cap (it had been' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Check belts, fuel cap (it had been' (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 · 5 captured posts examined · 0 partial discussions

Compare 2 other evidence results

Replace with the recall), oil pressure and temps were fine

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
At that time I pulled over, suspected the quality of gas, checked the belts, fuel cap (it had been replaced with the recall), oil pressure and temps were fine.
Original post Read captured discussion
"Lifter" noise (?)

Check engine were nominal

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
Symptoms for the check engine were nominal.
Original post Read captured discussion
"Lifter" noise (?)

Frequently discussed actions (3)

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

Check belts, fuel cap (it had been

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
At that time I pulled over, suspected the quality of gas, checked the belts, fuel cap (it had been replaced with the recall), oil pressure and temps were fine.
Original post Read captured discussion
"Lifter" noise (?)

Check engine were nominal

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
Symptoms for the check engine were nominal.
Original post Read captured discussion
"Lifter" noise (?)

Replace with the recall), oil pressure and temps were fine

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
At that time I pulled over, suspected the quality of gas, checked the belts, fuel cap (it had been replaced with the recall), oil pressure and temps were fine.
Original post Read captured discussion
"Lifter" noise (?)

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: 20261027T201111Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources

POST 1 / ORIGINAL POSTEROriginal post

This weekend just for fun I took out all of the rear carpet, rear sound insulation and rear panels and took the car for a drive. 2001 911 Coupe. At idle my engine noise is disconcerting in that the lifters seem to be rattling. Is this normal? The sound is more obvious and loud with the insulation, etc. out and I've now reinstalled everything, but I'm concerned about the motor. All other signs are good in terms of oil pressure, water temps, etc. and I just had the car hooked up to a PST2 device at the dealer. (They needed to switch out a bad O2 sensor). The car is meticulously maintained and currently has 12,500 miles on the odometer. I ordered it new. Your opinions on the noise are appreciated.

POST 2Original post

Hey Gonzo, what were the symptoms of your bad O2 sensor that made you take it to the dealer?

POST 3Original post

You might be hearing the fuel injectors now that you have removed the insulation. Jeff

POST 4Original post

yeah I would like to know the symptoms as well, rough idle? thanks.

POST 5 / ORIGINAL POSTEROriginal post

Symptoms for the check engine were nominal. I had just completed a DE event at Mid-Ohio and was half way home to Chicago and had just filled up with gas. The check engine light just came on about 20 miles from the gas station. At that time I pulled over, suspected the quality of gas, checked the belts, fuel cap (it had been replaced with the recall), oil pressure and temps were fine. I called my Porsche mechanic at home over Easter and he suggested that if the motor was strong then to drive it, which I did. The next day a dealer hooked up the PST2 to get the cause code, then switched out the O2 sensor and the air filter (the air filter was only 3 weeks old) and all was well.

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