Rennlist

Question about part name and vacuum leak

Add to repair workspace

New repair projectOpen repair workspace

Original source

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

THIS DISCUSSION / SOURCE-DERIVED OVERVIEW

Discussion summary

YOUR RESEARCHQuestion about part name and vacuum leak

Leading reported evidence

Smoke-test on my 1999 911

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
I did a smoke test on my 1999 911.
Original post Read captured discussion
Question about part name and vacuum leak

Read full discussion summary

Leading evidence: 'Smoke-test on my 1999 911' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Smoke-test on my 1999 911' (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 1 other evidence results

Use piece fo rubber hose

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
Can use a piece fo rubber hose with a 90 deg bend in it as an alternate.
Original post Read captured discussion
Question about part name and vacuum leak

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.

Smoke-test on my 1999 911

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
I did a smoke test on my 1999 911.
Original post Read captured discussion
Question about part name and vacuum leak

Use piece fo rubber hose

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
Can use a piece fo rubber hose with a 90 deg bend in it as an alternate.
Original post Read captured discussion
Question about part name and vacuum leak

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.

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: 20261027T084359Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources

POST 1 / ORIGINAL POSTEROriginal post

I did a smoke test on my 1999 911. I found 1 location where it was leaking. Currently I have problems with the idle not being stable after the engine is warmed up. If I keep the A/C on it seems to go away. After a warm start, the car idles very poorly at first or stalls altogether. Could a vacuum leak like this possibly contribute to the problem? Does anyone know what the part I will need to fix this? In the pictures, you can see where it is leaking. If it matters, the engine is cold. Thanks! Any idea what part this is? Same part bigger picture

POST 2Original post

Intake manifold adapter I believe

POST 3Original post

Looks like a brakebooster vacuum connection to intake manifold...

POST 4Original post

Brake booster line. Can use a piece fo rubber hose with a 90 deg bend in it as an alternate. Mine has a vacuum leak at the AOS. be thankful this is an easy one to fix!

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