18 captured repliesDiscussion pagination complete · Source accounts, not a confirmed diagnosis
THIS DISCUSSION / SOURCE-DERIVED OVERVIEW
Discussion summary
YOUR RESEARCHOil leak after 3,400 miles!!! C4S
Leading reported evidence
Replace foc by the opc
Performed · outcome unconfirmed
No successful repair reported for this finding.
0
Reported fixes
0
Unsuccessful attempts
1
Discussions
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 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
This was replaced FOC by the OPC before I had a warranty in place.
Leading evidence: 'Replace foc by the opc' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, the most frequently mentioned possible cause is 'failed washer' (1 discussions; 0 report identifying it and 1 suggest it). The most frequently discussed action is 'Replace foc by the opc' (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.
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
Well in my case it is a bit different, as i bought the car used 2 months ago, so i did not have very much time available to drive it.
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
This is a 2003 model with 26.500 km which i bought used from Germany this January.
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 suspect 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.
Suspected cause
I had a recent leak which turned out to be a failed washer on a chain tensioner which appears as a large bolt on the underside of the engine on the left hand side, looking from the rear.
Outcome qualification: Negation, uncertainty or missing explicit repair resolution overrides the raw extraction signal.
Replace now
Suggestion or failed attempt
No successful repair reported for this finding.
0
Reported fixes
0
Unsuccessful attempts
1
Discussions
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 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
Any other ideas, for things to check or replace now with the RMS repair?
These are separate views of the same evidence. Frequency alone does not establish a fix, and these counts must not be added together.
failed washer
No successful repair reported for this finding.
0
Identified cause
1
Suspected cause
0
Reported fixes
Read evidence and context
Discussions that suspect 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.
Suspected cause
I had a recent leak which turned out to be a failed washer on a chain tensioner which appears as a large bolt on the underside of the engine on the left hand side, looking from the rear.
Outcome qualification: Negation, uncertainty or missing explicit repair resolution overrides the raw extraction signal.
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.
18 eligible posts · 0 unverified posts · 1 discussions match the subject in their title or opening post.
Porsche Club GB: 1 discussions
0 evidence records excluded for query context · 0 excluded by outcome qualification · 1 adjusted by outcome qualification.
0 acknowledgements have no verified action link; they do not establish a repair result.
Generation: 20261027T022239Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources
Hi. I own a C4S, bought July 2004 from Porsche of Nottingham. The car has travelled a careful 3,400 miles and I have noticed a small oil leak developing, underneath the rear axle. Just a few drops, approximately half a teaspoon.
I have contacted the OPC and booked the car in for a check. As you can imagine I am not happy and a little concerned. Has anyone else experienced this kind of problem?
Robin Hainsworth
Hi Robin,
not wanting to jump to conclusions but it could be the rear main seal. Known weakness on Boxsters and 996s. Covered by warranty obviously. Replacements can cure the problem permanently, other times people have multiple failures.
Suggest you search google for RMS or rear main seal failure - they'll be plenty of info about.
The RMS is the achilles heal on Boxster and 996/997 engines. The RMS went early in its life on both my 996 and my wife's Boxster. Easily replaced in both cases without quibble and trouble free thereafter.
Robin
I had a recent leak which turned out to be a failed washer on a chain tensioner which appears as a large bolt on the underside of the engine on the left hand side, looking from the rear. This was replaced FOC by the OPC before I had a warranty in place. The washer was aluminium or copper. The leak appeared dramatic but oil pressure and level was always OK and no aparent damage.
Hugh
Is there anywhere the liquid gold can't find an escape route from?
My own recent experience of oil leakage turned out (after the predictable RMS fear) to be the oil separator.
A seemingly innocuous problem, except that in the case of a TipS it requires the engine and gearbox to be dropped in order to change the separator. Thank heaven for the warranty.
It was all handled very painlessly, and I couldn't speak more highly of the OPC (Chapelgate) or the benefit of a warranty
Hello!
It seems that my 996 C4S has the same problem as well!
This is a 2003 model with 26.500 km which i bought used from Germany this January.
I will drive it today to my local official prosche dealership for check and repair.
Please correct me if i am wrong, but i think that if the car is not tiptronic, this RMS replacement is easier and less expensive? I have heard a friend saying that if the car is tiptronic then the whole engine must come down?
My C4S is manual gearbox!
Thanks in advance
p.s. @
Maggie
any update on your case?
Theo, your friend is correct. On the C2 and C4 Manual transmission cars it is possible to remove the transmission without the engine. On Tiptronics, the whole lot has to be removed.
My Point was having a car thats 3 years old and only done 3.5K miles won't help will it. At least you got a bit more value for money before your RMS failed. Personally i can't wait to get into mine every day and drive it. Thats what I bought it for, not to leave it standing in a garage to be taken out on the odd sunday. Just don't see the point. Anyway my opinion only
I see your point and i must say i agree with you.
Well in my case it is a bit different, as i bought the car used 2 months ago, so i did not have very much time available to drive it.
But anyway, as i said in the beggining i agree with you.
Any other ideas, for things to check or replace now with the RMS repair? The only issue that comes to my mind is maybe the clutch but just 26.000km totally so far, it must be as new. How often usually do other manual C4 - C4S owners replace their clutches?
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