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911uk

Rotten Cabbage?

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Original source
15 captured repliesPartial discussion capture · Source accounts, not a confirmed diagnosis
THIS DISCUSSION / SOURCE-DERIVED OVERVIEW

Discussion summary

YOUR RESEARCHRotten Cabbage?

Leading reported evidence

Replace brands

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

If so, try changing brands.

Rotten Cabbage?
Read full discussion summary

Leading evidence: 'Replace brands' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Replace brands' (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 · 15 captured posts examined · 1 partial discussions

Compare 2 other evidence results

Use different fuel

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

I used to get a rotten egg smell from the cat on one of my Audis, and it went away when I started using a different fuel.

Rotten Cabbage?

Use same brand of fuel

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

Do you use the same brand of fuel for each fill?

Rotten Cabbage?
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.

Replace brands

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

If so, try changing brands.

Rotten Cabbage?

Use different fuel

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

I used to get a rotten egg smell from the cat on one of my Audis, and it went away when I started using a different fuel.

Rotten Cabbage?

Use same brand of fuel

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

Do you use the same brand of fuel for each fill?

Rotten Cabbage?
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.

15 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: 20261027T035758Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources

POST 1 / ORIGINAL POSTEROriginal post

Hi Guys, Does anyone else ever get a strange smell coming from their 911??? I have a 996 C4 Cab (1999) and she runs beautifully (recently shipped her to my new home in Australia). However - occasionally and esp. when the roofs down - I get the strangest smell - not unlike rotten cabbage. I used to have a 993 C4 Cab and to used to get the occasional strange smell from that too - sometimes like burning or oil etc - but never had an issue other than that. Does anyone have any similar issues? I used to put it down to the fact that it's a performance sports car that gets driven hard and these smells are just part of it. As I say she's drives great and there are no warning lights on. The Temperature gauge Never goes over much over the middle, everything seems as it should be so is this normal? Regards, Dan.

POST 2Original post

I assume you dont mean the smell coming off the mufflers when hot...burning the crap kicked up off the road?

POST 3 / ORIGINAL POSTEROriginal post

Hi, I wouldnt have the faintest idea - maybe? It is always the same smell though i know that much. I guess that could be one explanation.....

POST 5Original post

been putting the groceries in the wrong end? :lol: TB

POST 6Original post

:floor: :floor: :floor: Reminds me of when I was hungry in a Eurotunnel queue once, and a little voice came from the next car saying "look Daddy, that man just got a banana from his engine".. :lol: :lol: :lol:

POST 8 / ORIGINAL POSTEROriginal post

LOL yeh must be that, i wont let the Mrs take it too the shops again!!! :?

POST 9Original post

Joking aside I understand it can be a worry when you smell something unusual. Best to monitor conditions when it happens.

POST 10Original post

Rotten Cabbage Sounds (smells) like the catalytic converter to me. Smell is worse when you are reversing or parking? This is not uncommon.

POST 11Original post

It's not just the usual hot brakes smell that is normal for a 911. No prankster has stuffed something in your exhaust? Smell your tailpipes to see if it is worse there. I want to catch this on video if you do though The only smell I had in my car was when my back end stepped out once :roll: Pete

POST 12Original post

Give up sprouts for a week then see what happens! :food:

POST 13Original post

Sulphur from the Cat (alytic), Normal me thinks.

POST 14 / ORIGINAL POSTEROriginal post

Hi, Actually it seems to be just after I start it (first 5-10 mins) and especially if i boot it during that time - going back to one of the previous comments it does actually seem to be coming from the mufflers? Or it could be the brakes or Cat. Anyway - as i said she drives perfectly so i think i will stop worrying, unless it gets significantly worse. Shes due for a service soon-ish too so they can look at it then. Cheers Dan.

POST 15Original post

Do you use the same brand of fuel for each fill? If so, try changing brands. I used to get a rotten egg smell from the cat on one of my Audis, and it went away when I started using a different fuel.

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