Porsche Club GB

Hydraulic Valve Lifters

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

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YOUR RESEARCHHydraulic Valve Lifters

Leading reported evidence

Replace lifters

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No successful repair reported for this finding.

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Unsuccessful attempts: 1
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Suggestion · Original poster
The question is, do I change all the lifters on the same bank, or just those on cylinder 5, are hydraulic lifter failures a common issue?
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Hydraulic Valve Lifters

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Leading evidence: 'Replace lifters' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Replace lifters' (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.

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1 matching discussions · 1 captured posts examined · 0 partial discussions

Frequently discussed actions (1)

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Replace lifters

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
The question is, do I change all the lifters on the same bank, or just those on cylinder 5, are hydraulic lifter failures a common issue?
Original post Read captured discussion
Hydraulic Valve Lifters

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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.

Porsche Club GB: 1 discussions

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Generation: 20261026T161109Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources

POST 1 / ORIGINAL POSTEROriginal post

For some months now, my 996 C4S has suffered an intermittent EML light issue, diagnostics show misfire on cylinder 5. Despite changing the coil pack, fitting a new spark plug and swopping injectors, it still persists. My specialist believes its down to a sticking hydraulic lifter. I should mention revving the engine usually puts the light and warning out, there is a you tube video that shows the same issue. The question is, do I change all the lifters on the same bank, or just those on cylinder 5, are hydraulic lifter failures a common issue? it is something I would not expect at 65.000 miles. I have put some Luqi Moly hydraulic lifter treatment in the motor, not sure how successful it will be, I guess time will tell.

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