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THIS DISCUSSION / SOURCE-DERIVED OVERVIEW
Discussion summary
YOUR RESEARCH2002 996 lifter problem, only 12k miles?
Reported or suspected cause
lifter & propose a $4k solution, $900 of
Reported cause
No successful repair reported for this finding.
1
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0
Suspected cause
0
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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
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Reported cause · Original poster
After a week of inability to diagnose the problem, the only local dealer says a misfire in cyl 6 is caused by a faulty lifter & propose a $4K solution, $900 of which is parts that the factory may or may not cover.
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
I have heard a couple of people claiming to have a sticking lifter actuator after using 15W-50 Mobil 1 which is too thick when compared to the factory specification.
Leading evidence: 'lifter & propose a $4k solution, $900 of' (1 discussions report identifying this cause; no attributable repair resolution). Across 1 matching discussions, the most frequently mentioned possible cause is 'lifter & propose a $4k solution, $900 of' (1 discussions; 1 report identifying it and 0 suggest it). The most frequently discussed action is 'Use 15w-50 mobil 1' (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
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0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.
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Suggestion
I have heard a couple of people claiming to have a sticking lifter actuator after using 15W-50 Mobil 1 which is too thick when compared to the factory specification.
These are separate views of the same evidence. Frequency alone does not establish a fix, and these counts must not be added together.
Use 15w-50 mobil 1
No successful repair reported for this finding.
0
Reported fixes
0
Unsuccessful attempts
1
Discussions
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Discussions that contain suggestions
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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
I have heard a couple of people claiming to have a sticking lifter actuator after using 15W-50 Mobil 1 which is too thick when compared to the factory specification.
These are separate views of the same evidence. Frequency alone does not establish a fix, and these counts must not be added together.
lifter & propose a $4k solution, $900 of
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 · Original poster
After a week of inability to diagnose the problem, the only local dealer says a misfire in cyl 6 is caused by a faulty lifter & propose a $4K solution, $900 of which is parts that the factory may or may not cover.
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.
3 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: 20261027T044418Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources
Good morning, folks. After a week of inability to diagnose the problem, the only local dealer says a misfire in cyl 6 is caused by a faulty lifter & propose a $4K solution, $900 of which is parts that the factory may or may not cover. That diagnostic delay makes me wary, as does the recent history. The check engine light came on 2 months ago, I took it in, and the dealer claimed it needed coils and plugs ($900) which I paid for. Less than 250 miles later, the check engine light comes on, I take it in, and after the puzzling delay, this is what they now claim. I just don't have confidence that they were correct the first time, nor this time.
I saw in a British group discussion that somebody had a similar problem, and an oil flush unstuck a lifter, but no further details. Anybody know/heard/ willing to chance a guess? Any suggestions as to how to get the dealer to stand behind this latest diagnosis? Thanks in advance for any help at all. Larry Dodd, Baton Rouge, Louisiana
Hmmm.....Well, nobody knows nothing? I sure don't. I guess the message from here is don't hold back with your 996. Drive it plenty, and that way, maybe that lifter problem will show up while it's still in warranty. It was a second car for me, and I think I really made a mistake letting it sit so much. You can bet I am going to drive it a lot during the coming weeks, if for no other reason than to see if the local dealer bozos have correctly diagnosed the problem, or if I am just going to be back in there again in a few miles, with the check engine light back on.
Incidentally, when I tried to get more information as to how they reached their decision; i.e., how they knew it wasn't just a flywheel sensor, vacuum leak, just needed an oil flush (all a LOT less expensive), they advised that they had taken both valve covers off and watched the lifters, so they knew that this one (#6) wasn't closing as it should.
Wish me luck.
Larry Dodd
2002 C4S white
1987 Turbo-look Cab white (conversion, regrettably)
2004 Cayenne S, sort of off-white
I have heard a couple of people claiming to have a sticking lifter actuator after using 15W-50 Mobil 1 which is too thick when compared to the factory specification. Whether this was coincidence or not is not clear, but it can't hurt doing an oil change and refilling with the correct 0W-40 weight oil and see if the problem cures itself.
If not it might be worth taking it to an independent garage or another dealer to seek a second opinion. Maybe an independent may be able to fix the lifter instead of replacing it?
Sorry I didn't see this yesterday!
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