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YOUR RESEARCH996 muffler rattle
Reported or suspected cause
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Reported cause
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1
Identified cause
0
Suspected cause
0
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Read evidence and context
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Leading evidence: 'be' (1 discussions report identifying this cause; no attributable repair resolution). Across 1 matching discussions, the most frequently mentioned possible cause is 'be' (1 discussions; 1 report identifying it and 0 suggest it). No action has an explicit, attributable resolution report under the current rules. These are forum reports and suggestions, not a confirmed diagnosis.
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Reported cause
My rattle turned out to be a cracked stud for the exhaust tips.
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.
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Reported cause
Mine used to rattle, but it was the pipe clamp and not the actual muffler.
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14 eligible posts · 0 unverified posts · 1 discussions match the subject in their title or opening post.
Rennlist: 1 discussions
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996 3004 Rattle in muffler. On my 996 the left muffler is sometimes rattling and I was wondering if it would be a good idea to open it up and fix the rattle? Has anyone done it and can it be done?
The baffles go out - mine rattles a lot - and sure it could be fixed or mitigated if they are opened up. I think it's just a matter of welding the baffle in place, or doing something to tighten it down.
Do a search for a thread about gutting the mufflers, it has some pics that will help as well as a google image search for what's inside.
It can be done - another RL member had one of my rattly Tubi mufflers opened up to fix a loose baffle. However, a rattle from that area is often not the muffler - a loose heat shield rattling against the muffler seem to be the most common culprit.
After much thought I decided to remove the left muffler cut it open and see where the rattle came from. And sure enough the inside baffle had come loose, just a little bit but enough to make a loud irritating noise. I welded the parts together inside the muffler then welded back the double layer outside cover that I had cut away with angle grinder. Now it sounds just like a new again we shall see how long it will last.
Glad you were able to salvage it. Loose baffles are usually the case in internal rattles. For anyone else that may have this issue in the future, you don't necessarily need to cut the case open. I recommend drilling through both case layers at the key areas where the baffles rests(raised areas) and you should be able to spot weld it. Pic of the two baffles below.
It may work for some and perhaps worth the try but I cut mine open and also welded the 2 connector pipes since they seemed loose also and in glad I did.
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