fullymatted.
Back to search
911uk

Exhaust Out of Vent!

Add to repair workspace
Open repair workspace
Original source
5 captured repliesDiscussion pagination complete · Source accounts, not a confirmed diagnosis
THIS DISCUSSION / SOURCE-DERIVED OVERVIEW

Discussion summary

YOUR RESEARCHExhaust Out of Vent!

Reported or suspected cause

heat control valves being

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 · Original poster

exhaust out of the vents was due to the heat control valves being so rusty they were none existant, so exhaust gas got into the ventaliation system.

Original post Read captured discussion
Exhaust Out of Vent!
Frequently discussed work

Replace these should solve the problem

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

Replacing these should solve the problem.

Original post Read captured discussion
Exhaust Out of Vent!
Read full discussion summary

Leading evidence: 'heat control valves being' (1 discussions report identifying this cause; no attributable repair resolution). Across 1 matching discussions, the most frequently mentioned possible cause is 'heat control valves being' (1 discussions; 1 report identifying it and 0 suggest it). The most frequently discussed action is 'Replace these should solve the problem' (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 · 5 captured posts examined · 0 partial discussions

Compare 2 other evidence results

Replace these should solve the problem

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

Replacing these should solve the problem.

Original post Read captured discussion
Exhaust Out of Vent!

Test drive

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

Wouldn't want to gas the prospective purchaser on their test drive!

Original post Read captured discussion
Exhaust Out of Vent!
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 these should solve the problem

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

Replacing these should solve the problem.

Original post Read captured discussion
Exhaust Out of Vent!

Test drive

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

Wouldn't want to gas the prospective purchaser on their test drive!

Original post Read captured discussion
Exhaust Out of Vent!
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.

heat control valves being

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 · Original poster

exhaust out of the vents was due to the heat control valves being so rusty they were none existant, so exhaust gas got into the ventaliation system.

Original post Read captured discussion
Exhaust Out of Vent!
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.

  • 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: 20261027T031046Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources

POST 1 / ORIGINAL POSTEROriginal post

Hi, My Left-Hand Drive 1981 911SC is now smoking exhaust fumes out of the drivers (left) screen vent! I've got new heat-exchangers, so somewhere the exaust gas is getting into the ventalation system. Not sure where to start looking. Any ideas ? It's also making a "chirping" sound when accelerating?! Is this connected to the leak or yet another problem ? :? Any comments or helpful suggestions appreciated! I was wanting to sell it, but need to fix this up first. Wouldn't want to gas the prospective purchaser on their test drive! Cheers, Barry. Migration info. Legacy thread was 78694

POST 2 / ORIGINAL POSTEROriginal post

hmmmm.... it's now booked into the Porsche garage (next Tuesday) to take a look. I'll post back the cause & solution. B. Migration info. Legacy thread was 79582

POST 3 / ORIGINAL POSTEROriginal post

ok, found the answers. 1. exhaust out of the vents was due to the heat control valves being so rusty they were none existant, so exhaust gas got into the ventaliation system. Replacing these should solve the problem. 2. noise/chirping was from the emission control pipe leaking, so again related to exhaust. Solution was to bin the whole emission control stuff, pump, pipes, etc. and slap some blanking plugs. Funny.... feel like I'm talking to myself here! B. Migration info. Legacy thread was 86183

POST 4Original post

i read your story, I am no help mechanically whatsoever so no point in me posting, but I am glad you are now all sorted. Migration info. Legacy thread was 86187

POST 5Original post

Also Glad to hear it's sorted - I guess our knowledge on here doesn't stretch back to 1981! Always good to see the answers though! Migration info. Legacy thread was 86192

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