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  #1  
Old 02-13-2010, 05:14 PM
mbzr4ever's Avatar
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Excessive muffler noise

This is for my 1979 240 D, w123.

Exhaust noise louder than normal lately. So I look underneath, here is a shot at about the side mirror, passenger side.

If this is a probable cause of the noise, can someone show me what it should look like, or what they did for a similar fix? I'm thinking I just need to tighten the clamp, which is kinda loose, but maybe the pipe is ready to break due to the rust?

(I did search, and someone had posted "cut a tin can lengthwise and use 2 clamps. " That is almost what I need here, isn't it?)

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Excessive muffler noise-dscn1510.jpg  
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1991 300E 124.030 103.983KE 722358 03 412178
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1979 240D 123.123 250K (Project car)

2000 Ford Ranger, 187K

2015 Dodge Ram 1500 EcoDiesel 37K
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  #2  
Old 02-13-2010, 05:48 PM
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That clamp doesn't look so good, and neither does the pipe. The expensive fix is to take it to a muffler shop and have the rotten parts replaced. The cheaper fix starts with trying to tighten the clamp, and then if that doesn't work, a can and some hose clamps.
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  #3  
Old 02-13-2010, 06:31 PM
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Most of the other repairs that came up when I searched had to do with welding, muffler tape or epoxy, etc.

Skippy, you are correct, I don't want to spend a bunch of $$ right now and my state is not that fussy when it comes to inspections, so a "band aid" approach is what I am looking for.

Probably will go with clamp/muffler tape and some reinforcing pipe/sheet metal wrapped over all with a couple hose clamps.

Actually, if this is the source of the noise, I'm pretty lucky.
It could be a lot worse.

Edit: I took another look, and everything is pretty solid, in other words the exhaust pipe is not moving, no visible space, etc. I think I'll just tighten the clamp and not change anything for the time being. (Learned from having to change the radiator; sometimes it is best not to mess too much with rusted parts.)
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1991 300E 124.030 103.983KE 722358 03 412178
207K

1979 240D 123.123 250K (Project car)

2000 Ford Ranger, 187K

2015 Dodge Ram 1500 EcoDiesel 37K

Last edited by mbzr4ever; 02-13-2010 at 11:15 PM.
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Old 02-14-2010, 07:19 AM
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It looks like some one has tried welding it up previously. I would take that clamp off, it looks st##fed anyway, then wrap a can around it , then a couple of exhaust clamps. A drive over some mud may also help.
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  #5  
Old 02-14-2010, 12:23 PM
mbzr4ever's Avatar
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You know, layback40, you might be right. Somewhere in its long history, someone might have welded the connection.

I'll see if the tightened clamp does not resolve the noise/exhaust leak problem. Then it would be what you suggest for part II. I also have some muffler cast handy, just in case.

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1991 300E 124.030 103.983KE 722358 03 412178
207K

1979 240D 123.123 250K (Project car)

2000 Ford Ranger, 187K

2015 Dodge Ram 1500 EcoDiesel 37K
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