911uk

Spark plug change interval

Add to repair workspace

New repair projectOpen repair workspace

Original source

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

THIS DISCUSSION / SOURCE-DERIVED OVERVIEW

Discussion summary

YOUR RESEARCHSpark plug change interval

Leading reported evidence

Replace 4 years ago

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 · Original poster
Noting that the car has only covered 5k since last spark change 4 years ago.
Original post Read captured discussion
Spark plug change interval

Read full discussion summary

Leading evidence: 'Replace 4 years ago' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Replace 4 years ago' (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 · 7 captured posts examined · 0 partial discussions

Compare 2 other evidence results

Replace every 4 year/28k miles

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.

0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.

Suggestion · Original poster
I understand that spark plugs should be changed every 4 year/28k miles.
Original post Read captured discussion
Spark plug change interval

Replace not due

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.

0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.

Suggestion
Awesome, my next plug change not due for about another 10 years then.
Original post Read captured discussion
Spark plug change interval

Frequently discussed actions (3)

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

Replace 4 years ago

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
Noting that the car has only covered 5k since last spark change 4 years ago.
Original post Read captured discussion
Spark plug change interval

Replace every 4 year/28k miles

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
I understand that spark plugs should be changed every 4 year/28k miles.
Original post Read captured discussion
Spark plug change interval

Replace not due

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
Awesome, my next plug change not due for about another 10 years then.
Original post Read captured discussion
Spark plug change interval

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.

7 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: 20261026T112012Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources

POST 1 / ORIGINAL POSTEROriginal post

Hi. I have a 996tt and its due a service. The S/H is: Jan 2014 - 68k - major service with spark plug change. Jan 2015 - 71k - minor service Jan 2016 - 72.5k - minor (completed by seller RPM) Jan 2017 - 73k - minor I understand that spark plugs should be changed every 4 year/28k miles. Noting that the car has only covered 5k since last spark change 4 years ago. Should I have these changed and how much is the cost at Indy? I'm hoping to maintain it's immecable service record Thanks

POST 2Original post

I thought the spark plug change was on miles not time. iirc it's 30k miles so yours don't need changing.

POST 3Original post

Part of the service sheet for referance .

POST 4Original post

As you mentioned you want to maintain the service record, spark plugs need to be done every 4 years. However, since you have only covered 5k miles they will come out clean, and will be an unfortunate waste of money. I wouldn't change mine until six years (20-25k miles for me) - and even that I know deep down will be premature! But I also am not bothered about service history.

POST 5Original post

Awesome, my next plug change not due for about another 10 years then.

POST 6Original post

Spark plugs are not what they were 20 years ago (when they needed to be done every year), and have a MUCH longer shelf life now.

POST 7 / ORIGINAL POSTEROriginal post

Poker2009, Asterix, Demort and T8. Thank you all for your help.

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