fullymatted.
Back to search
911uk

Variocam tapping noise

Add to repair workspace
Open repair workspace
Original source
5 captured repliesDiscussion pagination complete · Source accounts, not a confirmed diagnosis
THIS DISCUSSION / SOURCE-DERIVED OVERVIEW

Discussion summary

YOUR RESEARCHVariocam tapping noise

Leading reported evidence

Replace does not mean it's not them

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

Could be a few things, if it's tapping like the lifters, just because they have been replaced does not mean it's not them.

Original post Read captured discussion
Variocam tapping noise
Read full discussion summary

Leading evidence: 'Replace does not mean it's not them' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Replace does not mean it's not them' (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.

Read captured replies

1 matching discussions · 5 captured posts examined · 0 partial discussions

Frequently discussed actions (1)

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

Replace does not mean it's not them

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

Could be a few things, if it's tapping like the lifters, just because they have been replaced does not mean it's not them.

Original post Read captured discussion
Variocam tapping 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.

  • 911uk: 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

POST 1 / ORIGINAL POSTEROriginal post

1999 996 3.4 Tiptronic. I have an intermittent tapping noise at idle coming from the rear of the off side which appears to be from the Variocam. It disappears sometimes by itself but always with a few revs applied. Any thoughts on what the tapping could be from the Variocam? Hydraulic tappets all replaced on both banks so not these and definitely not bottom end. Any thoughts appreciated. Thanks.

POST 4Original post

I've had 3 different 3.4 996"s all have ticked on hot idle, all ran fine with no issues. Posted before by someone else, but. The term "Tickover" was apparently coined by the engine speed that the ticking noise from a reciprocating engine ceases to tick at. Increasing the low idle speed on these engines tends to stop the ticking noise. Just a characteristic of these motors that sometimes happens. Think there is a member on here with a full rebuild which does it. If you don't have A/C on, try it and see if noise goes away or decreased Could be piston slap but I'd hazard that this is unlikely unless it's a heavier knocking sound? Ultimately I imagine you will get lots of answers and suggestions on here but you may decide to go to a good independent garage to give you a definitive. Hope this helps

POST 5Original post

Could be a few things, if it's tapping like the lifters, just because they have been replaced does not mean it's not them. Why were they replaced? If they failed but the cause was not addressed forinstance they were oil starved and the blocked oilways were not cleared then the problem will reoccur.

This is a source reference. Confirm exact model applicability in the original material.