911uk

c4 99 - head gasket

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

THIS DISCUSSION / SOURCE-DERIVED OVERVIEW

Discussion summary

YOUR RESEARCHc4 99 - head gasket

Leading reported evidence

Adjust purchase price

Suggestion or failed attempt

No successful repair reported for this finding.

0
Reported fixes: 0
Unsuccessful attempts: 1
Discussions

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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 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
Should I steer well clear or just adjust the purchase price?
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c4 99 - head gasket

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

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Repair should it go wrong

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
Does anyone have any experience of this and the costs of repair should it go wrong?
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c4 99 - head gasket

Frequently discussed actions (2)

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Adjust purchase price

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
Should I steer well clear or just adjust the purchase price?
Original post Read captured discussion
c4 99 - head gasket

Repair should it go wrong

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
Does anyone have any experience of this and the costs of repair should it go wrong?
Original post Read captured discussion
c4 99 - head gasket

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.

4 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: 20261026T113718Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources

POST 1 / ORIGINAL POSTEROriginal post

The RAC have looked at a 99 C4 for me. The coolant is low, which together with emulsified oil in the filter cap and a possible oil leak suggests (apparently) a problem with the head gasket. Does anyone have any experience of this and the costs of repair should it go wrong? Should I steer well clear or just adjust the purchase price? Migration info. Legacy thread was 1852

POST 2Original post

there numerous postings about emulisfied oil in the filler capon 911's people claim it is to do with sort runs and the gunk not being burnt off. I would be tempted to get a OPC PPI or a specialist to take a look at it. John Migration info. Legacy thread was 1853

POST 3Original post

Johnny - you must remeber that this is a 996 we are on about which has water cooling - this is a whole lot different than a bit of condensation in the oil on an earlier 911 - this sounds like a rather poorly Porsche needing many pounds spending on it! Andy Migration info. Legacy thread was 1858

POST 4Original post

It sounds like rectifying this problem could be very expensive. Even if the gasket is sorted (engine out, strip down, many thousands of punds job) why has it leaked and what else might be wrong with the car. There are loads of 996's out there. I would walk away and be glad the few quid you spent on the search spared you a wallet-busting nightmare. james Migration info. Legacy thread was 1898

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