12 captured repliesDiscussion pagination complete · Source accounts, not a confirmed diagnosis
THIS DISCUSSION / SOURCE-DERIVED OVERVIEW
Discussion summary
YOUR RESEARCHDropped Oil Sump Pan
Leading reported evidence
Check couple of weeks ago
Performed · outcome unconfirmed
No successful repair reported for this finding.
0
Reported fixes
0
Unsuccessful attempts
1
Discussions
Read evidence and context
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Discussions that performed work without a confirmed outcome
1
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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
Cam deviations between banks 1 & 2 were less than 6 degrees when I checked a couple of weeks ago.
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Suggestion
This is a 2002 model which is the M96.03 three chain engine that doesn't have the wear pads with the VarioCam actuator like the 5-chain, but instead has a rotary vane pump to adjust intake camshaft VVT.
Leading evidence: 'Check couple of weeks ago' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, the most frequently mentioned possible cause is 'guide' (1 discussions; 0 report identifying it and 1 suggest it). The most frequently discussed action is 'Adjust intake camshaft vvt' (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 contain suggestions
1
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Suggestion
This is a 2002 model which is the M96.03 three chain engine that doesn't have the wear pads with the VarioCam actuator like the 5-chain, but instead has a rotary vane pump to adjust intake camshaft VVT.
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
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Suspected cause
It's more likely the guide under variocam actuator.
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
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Suggestion
It is more involved to change this chain guide, but if you do not want to change the chains, then you still can do it without splitting the case.
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
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Suggestion · Original poster
I've had it for 4-1/2 years and have been changing my own oil over the last 2-1/2 years with Oil analysis.
These are separate views of the same evidence. Frequency alone does not establish a fix, and these counts must not be added together.
Adjust intake camshaft vvt
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
This is a 2002 model which is the M96.03 three chain engine that doesn't have the wear pads with the VarioCam actuator like the 5-chain, but instead has a rotary vane pump to adjust intake camshaft VVT.
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.
12 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: 20261026T222516Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources
I have a 2002 996 Targa with 99K miles. I've had it for 4-1/2 years and have been changing my own oil over the last 2-1/2 years with Oil analysis. For the first time under my ownership, I dropped my sump pan this oil change and found some Chain Guide material. See attached pictures. No metal particles in pan and oil filter. In fact, there were no particles of any type in the filter which I was pretty happy about. I've been using Porsche Classic oil and my oil analysis numbers have been improving over the last 2-1/2 years. Over the last 2-1/2 years that I have be looking at the filter, I've found minimal very small brown particles in oil filter, but none approaching the sizes in the pan. I'd like to know if this is an excessive amount of chain guide particles warranting a change in the guides, and what other signals I should look out for requiring a change in guides. I'd appreciate any input. Thanks,
That looks like a significant amount of chain gourd material to me.
it obviously didn’t make it to the filter as the particles are to large to go over the oil pick up tube screen.
what are your cam divination readings?
Cam deviations between banks 1 & 2 were less than 6 degrees when I checked a couple of weeks ago. I believe they were 4 deg apart. I don't recall what the exact numbers were.
This is a 2002 model which is the M96.03 three chain engine that doesn't have the wear pads with the VarioCam actuator like the 5-chain, but instead has a rotary vane pump to adjust intake camshaft VVT. The chain guides on the M96.03 are solid black and so this translucent brownish rubber is something else like excess sealant IMHO. I would still be concern about the 4 degrees of camshaft deviation.
Then you�re right, probably chain rail material. You must have the rails with the white translucent pads. Over time from exposure to heat and engine oil, they turn brown in color.
Probably came from here, bank 1 chain guide... They start out new as white but turn brown after years of hot oil useage..
Yes this is from a 3 chain engine...
My 997 engine is in pieces right now and that very same chain guide is worn out showing a lot of scoring on the plastic. Although I did not find any pieces in the oil like the OP did. It is more involved to change this chain guide, but if you do not want to change the chains, then you still can do it without splitting the case.
However, I did find the chain guides on the IMS chain to also need replacement and that does require splitting the case. Those two guides are black in color, not light brown.
yelcab nailed it. Two of the guides have black wear pads and two have the translucent white plastic material when new which turns brown over time.
I went to the garage and dug out mine that have been in a box for almost 2 years. As you can see in the close up image. The end of the brown wear surface was beginning to chip off. This explains what the OP is seeing in the sump.
Hope this helps!
