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Help with metallic exhaust rattle? Video inside!

I just had my ART Pipes installed. I drove for about 25 miles without a noise. Stopped at my girlfriend's, and then drove another 10 miles home. When I got

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Old 06-25-2011, 09:12 PM   #1 (permalink)
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Default Help with metallic exhaust rattle? Video inside!

I just had my ART Pipes installed. I drove for about 25 miles without a noise. Stopped at my girlfriend's, and then drove another 10 miles home. When I got off the highway, I noticed this horrible metallic noise, like a pebble getting rattled around in a tin-can. It's pretty apparent in this video.

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Can anyone help? Wtf is this? Is something loose? I know my shop cut the bolt on the driver's side of the exhaust - was it not cut enough maybe?
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Old 06-25-2011, 09:47 PM   #2 (permalink)
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It almost sounds like a loose washer or maybe a gasket around one of your unions is loose.
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Old 06-25-2011, 09:57 PM   #3 (permalink)
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It sounds like something wasn't torqued down, as opposed to failing, which is why the sound started after driving it around some. I remember I had the same sound in my 350Z when I ran over a plate-cover at a gas station (where they pump the gasoline into the ground) and it knocked the ART Pipe loose and caused the sound.

This sounds similar.
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Old 06-25-2011, 09:59 PM   #4 (permalink)
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I would just jack her up and tighten all you fittings
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Old 06-26-2011, 01:47 AM   #5 (permalink)
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So did you get it fixed? What was the issue
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Old 06-26-2011, 01:49 AM   #6 (permalink)
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??? I just noticed the sound hours back. Every shop here is closed, it's dark out, and it's nearly impossible to crawl under the car with the drop.
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Old 06-26-2011, 01:51 AM   #7 (permalink)
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Also, check to make sure the rubber hangars are in place, and none of the tubes are touching parts of the car (e.g. sway bar, support members, etc.).
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Old 06-26-2011, 10:33 AM   #8 (permalink)
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I didn't even think of the hangers good point I had that problem on my Mach.
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Old 06-26-2011, 12:49 PM   #9 (permalink)
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Here is a much better video. Notice how as the idle drops the sound went away at the very end of the video.

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Old 06-26-2011, 04:58 PM   #10 (permalink)
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either thats cross member rattle, or there's a lose flange/gasket connection
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Old 06-26-2011, 05:40 PM   #11 (permalink)
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Is it the polishing bead problem being talked about in the Motordyne thread?
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Old 06-26-2011, 05:51 PM   #12 (permalink)
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Old 06-27-2011, 09:57 AM   #13 (permalink)
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Yes I believe that is the issue...
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Old 06-27-2011, 10:18 AM   #14 (permalink)
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I'm not familiar with those pipes, but on my hfc's I had a rattle from a loose plug that caps off the O2 sensor bung. Just make sure, cause this is so easily overlooked.
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