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Coolant Issue on track only

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

THIS DISCUSSION / SOURCE-DERIVED OVERVIEW

Discussion summary

YOUR RESEARCHCoolant Issue on track only

Leading reported evidence

Replace car checked out

Performed · outcome unconfirmed

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 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 had the car checked out and replaced the cap to an 04 and also the expansion tank as a preventative thing.
Original post Read captured discussion
Coolant Issue on track only

Frequently discussed work

Check exhaust in the oil, may be a cracked head

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
Get some of those test strips to check for exhaust in the oil, may be a cracked head.
Original post Read captured discussion
Coolant Issue on track only

Read full discussion summary

Leading evidence: 'Replace car checked out' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Check exhaust in the oil, may be a cracked head' (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.

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

Compare 2 other evidence results

Check exhaust in the oil, may be a cracked head

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
Get some of those test strips to check for exhaust in the oil, may be a cracked head.
Original post Read captured discussion
Coolant Issue on track only

Test strips

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
Get some of those test strips to check for exhaust in the oil, may be a cracked head.
Original post Read captured discussion
Coolant Issue on track only

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.

Check exhaust in the oil, may be a cracked head

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
Get some of those test strips to check for exhaust in the oil, may be a cracked head.
Original post Read captured discussion
Coolant Issue on track only

Replace car checked out

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 had the car checked out and replaced the cap to an 04 and also the expansion tank as a preventative thing.
Original post Read captured discussion
Coolant Issue on track only

Test strips

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
Get some of those test strips to check for exhaust in the oil, may be a cracked head.
Original post Read captured discussion
Coolant Issue on track only

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.

Rennlist: 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: 20261026T135432Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources

POST 1 / ORIGINAL POSTEROriginal post

So I have been tracking my C4S for the last 5 years. It has a 3.8 FSI stage II engine. Recently, I have been chasing a coolant issue. While I was sitting behind my car an hour after a session, I heard the car release some air. I figured it may have been some air in the coolant system and believed that to be normal. I had the car checked out and replaced the cap to an 04 and also the expansion tank as a preventative thing. Recently at CMP, I had steam coming from my engine after my first session and there was coolant in the cap. There was some coolant residue in the engine bay so I called it quits for the day. The coolant level was at the max line. About two hours after I heard some gurgling and a small puddle of coolant was deposited on the ground. I have had the coolant system pressure tested and all in spec. The temp gauge never gets higher than 200 and this only happens after a track session. I recently also had the radiators replaced. My mechanic is stumped. Any thoughts on next steps? See pics. Residue in cap Coolant on ground Looking up

POST 2Original post

Get some of those test strips to check for exhaust in the oil, may be a cracked head.

POST 3Original post

You might want to put in a trouble ticket with FSI. Please let us know what they tell you.

POST 4 / ORIGINAL POSTEROriginal post

Thanks for the suggestions. I will open a ticket with FSI and report back. Mark

POST 5 / ORIGINAL POSTEROriginal post

So good news as there were no combustion gasses in the coolant. The thermostat wasn�t running up to spec so that is getting replaced. Also a new water pump as it was time. Looking at adding a third radiator for good measure. Next track event is a one day event local to me in three weeks so it will get a full shakedown and test. Appreciate the suggestions.

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