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Porsche Club GB

Starting the car when warm

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Original source
4 captured repliesDiscussion pagination complete · Source accounts, not a confirmed diagnosis
THIS DISCUSSION / SOURCE-DERIVED OVERVIEW

Discussion summary

YOUR RESEARCHStarting the car when warm

Reported or suspected cause

engine end (not the tank end) fuel vent valve

Reported cause

No successful repair reported for this finding.

1
Identified cause
0
Suspected cause
0
Reported fixes
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 report identifying a cause
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.

Reported cause

I had a similar problem, took over a year to pin down, during which we replaced the ICV and the Flywheel position sensor - BUT eventually it was the engine end (not the tank end) fuel vent valve that was identified as the root cause of the problem.

Original post Read captured discussion
Starting the car when warm
Frequently discussed work

Replace fuel vent valve, or was it serviceable

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

Julius, did you replace the fuel vent valve, or was it serviceable ?

Original post Read captured discussion
Starting the car when warm
Read full discussion summary

Leading evidence: 'engine end (not the tank end) fuel vent valve' (1 discussions report identifying this cause; no attributable repair resolution). Across 1 matching discussions, the most frequently mentioned possible cause is 'engine end (not the tank end) fuel vent valve' (1 discussions; 1 report identifying it and 0 suggest it). The most frequently discussed action is 'Replace fuel vent valve, or was it serviceable' (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 · 4 captured posts examined · 0 partial discussions

Compare 2 other evidence results

Replace icv and the flywheel position sensor

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

I had a similar problem, took over a year to pin down, during which we replaced the ICV and the Flywheel position sensor - BUT eventually it was the engine end (not the tank end) fuel vent valve that was identified as the root cause of the problem.

Original post Read captured discussion
Starting the car when warm

Replace fuel vent valve, or was it serviceable

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

Julius, did you replace the fuel vent valve, or was it serviceable ?

Original post Read captured discussion
Starting the car when warm
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.

Replace fuel vent valve, or was it serviceable

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

Julius, did you replace the fuel vent valve, or was it serviceable ?

Original post Read captured discussion
Starting the car when warm

Replace icv and the flywheel position sensor

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

I had a similar problem, took over a year to pin down, during which we replaced the ICV and the Flywheel position sensor - BUT eventually it was the engine end (not the tank end) fuel vent valve that was identified as the root cause of the problem.

Original post Read captured discussion
Starting the car when warm
Reported and suspected causes (1)

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

engine end (not the tank end) fuel vent valve

No successful repair reported for this finding.

1
Identified cause
0
Suspected cause
0
Reported fixes
Read evidence and context
Discussions that report identifying a cause
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.

Reported cause

I had a similar problem, took over a year to pin down, during which we replaced the ICV and the Flywheel position sensor - BUT eventually it was the engine end (not the tank end) fuel vent valve that was identified as the root cause of the problem.

Original post Read captured discussion
Starting the car when warm
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.

  • Porsche Club GB: 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

Hi guys, long time no posting! Quick question, when I start from cold I get a 'proper' start up. Let us say I get to my destination and the car is warm and the car is off and then switched back on to continue a journey lets say 10 mins later the start up is first time but it is, shall we say slushy or lazy, is this normal and what could this be put down to? Mani

POST 2Original post

Mine does similar sometimes, I put it down to hot engine, fuel evaporation, as soon as you touch throttle all fine

POST 3Original post

I had a similar problem, took over a year to pin down, during which we replaced the ICV and the Flywheel position sensor - BUT eventually it was the engine end (not the tank end) fuel vent valve that was identified as the root cause of the problem. Never a problem starting cold - probably as the pressure gradually dissipates itself when the engine is off, but builds up again as the engine warms up and fuel flows. You might notice the tickover fluctuating a bit as well when the engine is warm, that's another clue. Hope you narrow it down.

POST 4Original post

I have just noticed mine is doing the same, rather lazy starting when hot. Julius, did you replace the fuel vent valve, or was it serviceable ?

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