911uk

Symptoms of a failed solenoid? Tapping?

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

THIS DISCUSSION / SOURCE-DERIVED OVERVIEW

Discussion summary

YOUR RESEARCHSymptoms of a failed solenoid? Tapping?

Leading reported evidence

Clean no scoring

Suggestion or failed attempt

No successful repair reported for this finding.

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Reported fixes: 0
Unsuccessful attempts: 1
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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.

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Suggestion · Original poster
Bores clean, no scoring.
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Symptoms of a failed solenoid? Tapping?

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

Suggestion or failed attempt

No successful repair reported for this finding.

0
Reported fixes: 0
Unsuccessful attempts: 1
Discussions

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Discussions that contain suggestions: 1

0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.

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Suggestion · Original poster
Spark plugs all clean, slightly darker on no 4 but only a bit.
Original post Read captured discussion
Symptoms of a failed solenoid? Tapping?

Disconnect coils individually

Suggestion or failed attempt

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.

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Suggestion · Original poster
So looking at Variocam end next as well as disconnecting coils individually.
Original post Read captured discussion
Symptoms of a failed solenoid? Tapping?

Run on

Suggestion or failed attempt

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.

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Suggestion
What grade oil you running on?
Original post Read captured discussion
Symptoms of a failed solenoid? Tapping?

Frequently discussed actions (4)

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

Clean no scoring

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
Bores clean, no scoring.
Original post Read captured discussion
Symptoms of a failed solenoid? Tapping?

Clean slightly darker

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
Spark plugs all clean, slightly darker on no 4 but only a bit.
Original post Read captured discussion
Symptoms of a failed solenoid? Tapping?

Disconnect coils individually

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
So looking at Variocam end next as well as disconnecting coils individually.
Original post Read captured discussion
Symptoms of a failed solenoid? Tapping?

Run on

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
What grade oil you running on?
Original post Read captured discussion
Symptoms of a failed solenoid? Tapping?

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.

2 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: 20261026T165820Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources

POST 1 / ORIGINAL POSTEROriginal post

Before I swap it I was wondering what the symptoms were if the solenoid failed or was on its way out, if possible? Trying to find the source of usual 3.4 tapping noise and possibly unrelated smoking on startup which can last a few mins especially out of near side exhaust. Definitely from bank 4,5,6. Had a new AOS. All hydraulic lifters replaced. Full service. Bores clean, no scoring. Spark plugs all clean, slightly darker on no 4 but only a bit. Stethoscope used and no 4 slightly noisier then 5 & 6. Tapping sound equal on exhaust branches to 4,5 and 6. Variocam end defiantly louder. Tapping is when cold and hot and disappears with only a small increase in revs. Cars runs great so happy that this could be just the characteristic tap but with the info above would like to investigate a little further just for personal interest. So looking at Variocam end next as well as disconnecting coils individually. Any thoughts on next steps appreciated.

POST 2Original post

That's worn mechanical parts and not your soleniod. What grade oil you running on? Edit: and what mileage?

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