911uk

Help coolant leaking

Add to repair workspace

New repair projectOpen repair workspace

Original source

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

THIS DISCUSSION / SOURCE-DERIVED OVERVIEW

Discussion summary

YOUR RESEARCHHelp coolant leaking

Leading reported evidence

Check cap

Performed · outcome unconfirmed

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 performed work without a confirmed outcome: 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.

Performed · outcome unconfirmed · Original poster
I let it cool down for a bit and I checked the cap, it was on pretty tight.
Original post Read captured discussion
Help coolant leaking

Read full discussion summary

Leading evidence: 'Check cap' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Check cap' (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 · 3 captured posts examined · 0 partial discussions

Compare 1 other evidence results

Check header tank and couldn't find any problems

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
Porsche did check the header tank and couldn't find any problems.
Original post Read captured discussion
Help coolant leaking

Frequently discussed actions (2)

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

Check cap

No successful repair reported for this finding.

0
Reported fixes: 0
Unsuccessful attempts: 1
Discussions

Read evidence and context

Discussions that performed work without a confirmed outcome: 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.

Performed · outcome unconfirmed · Original poster
I let it cool down for a bit and I checked the cap, it was on pretty tight.
Original post Read captured discussion
Help coolant leaking

Check header tank and couldn't find any problems

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
Porsche did check the header tank and couldn't find any problems.
Original post Read captured discussion
Help coolant leaking

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.

3 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: 20261026T203514Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources

POST 1 / ORIGINAL POSTEROriginal post

Hi all, The other day (which was quite hot), I was coming home in my 996 C4S, and the guy behind told me that green fluid was leaking from the back of my car. I was seconds away from my house so soon as I got home, I stopped, popped the boot and I could see coolant coming out of the header tank via the cap. I let it cool down for a bit and I checked the cap, it was on pretty tight. Oddly, I could see green specs in the left exhaust tip as well. When I tried to start the car now, the warning light was flashing on the temperature gauge. Porsche came and took it away the next day. After inspection and topping up the coolant, they told me they couldn't find anything wrong with the header tank or any other part of the cooling system. They did say my air conditioning needed re gassing but I'm not sure that was related. I will be getting it back within the next couple of days but I am worried that it's going to happen again. Any advice of whats wrong? Thanks, Surjit

POST 2Original post

older 996's suffer from hairline cracks in the header tank. mine went the other day so is being replaced. the flashing red light is for low coolant. should be OK if the OPC have checked it out. TB

POST 3 / ORIGINAL POSTEROriginal post

Its a late 2003 one. Porsche did check the header tank and couldn't find any problems. I was more worried about the head gasket (or head) hence the specs in the left exhaust tip. Guess I'll just have to see if it happens again.

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