9 captured repliesDiscussion pagination complete · Source accounts, not a confirmed diagnosis
THIS DISCUSSION / SOURCE-DERIVED OVERVIEW
Discussion summary
YOUR RESEARCHExhaust rattle, leak or whatever it is - it's annoying! - 986 Forum - The Community for Porsche Boxster & Cayman Owners
Leading reported evidence
Replace gasket mentioned above
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 replaced the gasket mentioned above, but it did not change the sputtering sound I was getting.
Exhaust rattle, leak or whatever it is - it's annoying! - 986 Forum - The Community for Porsche Boxster & Cayman Owners
Read full discussion summary
Leading evidence: 'Replace gasket mentioned above' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Check heat shields' (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.
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
Check the heat shields on the cats, they tend to start sliding around.
Exhaust rattle, leak or whatever it is - it's annoying! - 986 Forum - The Community for Porsche Boxster & Cayman Owners
Check where
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 know it is quite common and would appreciate other peoples ideas, what to check, where to look, etc.
Exhaust rattle, leak or whatever it is - it's annoying! - 986 Forum - The Community for Porsche Boxster & Cayman Owners
Smoke-test but found nothing
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.
Exhaust rattle, leak or whatever it is - it's annoying! - 986 Forum - The Community for Porsche Boxster & Cayman Owners
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.
9 eligible posts · 0 unverified posts · 1 discussions match the subject in their title or opening post.
986Forum: 1 discussions
0 evidence records excluded for query context · 0 excluded by outcome qualification · 0 adjusted by outcome qualification.
1 acknowledgements have no verified action link; they do not establish a repair result.
Outcome without a verified action link
Started the car on a lift and found that the drivers side pre-cat joint was still leaking very slightly.
Car sounds like a VW Beetle! Trying to figure out if it is a leak or cat. rattle.
I know it is quite common and would appreciate other peoples ideas, what to check, where to look, etc.
Thanks.
look around all the seams in your exhaust. if there is a black residue, you have a leak. if you tap on the cats with a rubber faced hammer, you may hear some rattling if the elements in the cats are breaking loose. best bet is to get the back end up on some ramps or stands and go to town checking everything..
Both 02 sensors were loose on the LH pipes when I bought the car and rattled on overrun Also one of the hangers had fractured on the back box which wasn't easy to find plus of course, rattling heatshields.
Was fair to say, the exhaust was definitely not the best (unlike the rest of the car).
My 99 started making an exhaust leak sound under load. I found the leak at the flange before the Cat on the Drivers side. I'm going to try a new flange gasket from Pelican.
If you find that you have the same leak, the Part Number is 996-111-113-02
Gravel in the catalytic converter heat shields will cause a rattle sounds at various RPM’s… It’s very annoying. I removed my heat shields, no more rattles.
Joints & heatshields seem ok. I think maybe the rattle is coming from one of the cats.
When I whack it with a rubber hammer it rattles. I need to get some ramps so I have more room to look. When I get my wife to rev it it doesn't rattle! BUT when I go to drive out the garage - of course - it rattles!
I hope this helps someone. I replaced the gasket mentioned above, but it did not change the sputtering sound I was getting. I tried smoke testing but found nothing. Started the car on a lift and found that the drivers side pre-cat joint was still leaking very slightly. I let the car cool and laid a bead of silicone window sealant around the leak. Let dry over night and that made all the difference in the world. Car sounds amazing now. When the silicone fails, maybe it won't, I will pull the header and get it welded up right.
Diagram below shows where I put the silicone in white.
This is a source reference. Confirm exact model applicability in the original material.
