9 captured repliesDiscussion pagination complete · Source accounts, not a confirmed diagnosis
THIS DISCUSSION / SOURCE-DERIVED OVERVIEW
Discussion summary
YOUR RESEARCHMuffler question
Reported or suspected cause
connection between the exhaust manifold and catalytic converter
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
It was the connection between the exhaust manifold and catalytic converter.
Leading evidence: 'connection between the exhaust manifold and catalytic converter' (1 discussions report identifying this cause; no attributable repair resolution). Across 1 matching discussions, the most frequently mentioned possible cause is 'connection between the exhaust manifold and catalytic converter' (1 discussions; 1 report identifying it and 0 suggest it). The most frequently discussed action is 'Repair /welded or should i' (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 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
The expansion (or contraction) of any material is due to the kinetic energy of its atoms.
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 · Original poster
I bought a set of used mufflers years ago and sent them to Fister for modification.
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
Can the seam be repaired/welded or should I replace the one muffler?
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.
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 it were me and since I've had my system off a couple times I'd pull the mufflers, and use a stripper wheel on them to get them clean if I didn't find any other issues and use a shop vac to pressurize the muffler and spray down with soapy water the cracks will bubble...
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 it were me and since I've had my system off a couple times I'd pull the mufflers, and use a stripper wheel on them to get them clean if I didn't find any other issues and use a shop vac to pressurize the muffler and spray down with soapy water the cracks will bubble...
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.
Rennlist: 1 discussions
0 evidence records excluded for query context · 0 excluded by outcome qualification · 0 adjusted by outcome qualification.
3 acknowledgements have no verified action link; they do not establish a repair result.
Outcome without a verified action link
When I start the car it sounds very loud but after a few miles it goes back to normal.
I bought a set of used mufflers years ago and sent them to Fister for modification. They have been great and I still have my original ones that had about 37k miles on them stored in my garage. One of my modified mufflers started sounding much louder today and when I looked at it it seems to be corroded at the seam (nothing to do with Fister). When I start the car it sounds very loud but after a few miles it goes back to normal.
1. Is there a physical reason why it would go back to normal after a while - like expansion?
2. Can the seam be repaired/welded or should I replace the one muffler? The price of the Fister mod as gone up and shipping it across country isn't cheap.
1.
What does heat do to metal? The expansion (or contraction) of any material is due to the kinetic energy of its atoms.
When a material is heated, the increase in energy causes the atoms and molecules to move more and to take up more space
— that is, to expand. This is true of even a solid such as a metal.
2. A muffler shop can likely repair.
I'm aware of that but have not witnessed a muffler "fix itself" from a hole before. The difference is dramatic, especially given that it only takes a couple of miles. Something new every day.
I've had severs unrelated exhaust systems over the years that did the same thing, loose clamp, tightens when it gets hot, cracked weld , loose manifold bolts same..
As noted prior in thread its a function of thermal expansion.
If it were me and since I've had my system off a couple times I'd pull the mufflers, and use a stripper wheel on them to get them clean if I didn't find any other issues and use a shop vac to pressurize the muffler and spray down with soapy water the cracks will bubble... The long seams if cleaned, can be welded or brazed if the seam fold is starting to give up.. POR has a exhaust paint that has worked well for me thats a nice silver..
