Weird Rattle Sound

NismoMD · 09-17-2019, 01:03 PM

Hey all, I just installed a new cat-back system the other day and it was working fine for a couple days but today I started the car and got to driving. About 10 mins into the drive once the engine was warmed I started hearing this rattle at low rpm, sounds like if you shook a soda can with a bolt in it. I hear it especially when I engage the clutch. Thinking it was an exhaust leak I went back and reset the gaskets and re-tightened the bolts but it's still there.

Any suggestions? It's weird cause you can barely hear it outside the car, but inside it is very loud.

Cyber370 · 09-17-2019, 01:28 PM

Make sure your exhaust system is clearing and not resting on the center cross brace of the car. This happens a lot with aftermarket exhaust systems.

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NismoMD · 09-17-2019, 01:34 PM

Quote:

Originally Posted by Cyber370

Make sure your exhaust system is clearing and not resting on the center cross brace of the car. This happens a lot with aftermarket exhaust systems.

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Hmmm, will have to check when I get home, hopefully this is it and I don't have to keep disassembling the exhaust and reassembling lol. Really hope this is it.

BettyZ · 09-17-2019, 10:18 PM

If it is, you can buy some aluminized fiberglass with adhesive, and stick it on the brace. Will help prevent rattle.

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09-17-2019, 01:03 PM	#1 (permalink)
NismoMD Base Member Join Date: May 2019 Location: Frederick, MD Posts: 7 Drives: 10 Nissan 370Z Nismo Rep Power: 6	Weird Rattle Sound Hey all, I just installed a new cat-back system the other day and it was working fine for a couple days but today I started the car and got to driving. About 10 mins into the drive once the engine was warmed I started hearing this rattle at low rpm, sounds like if you shook a soda can with a bolt in it. I hear it especially when I engage the clutch. Thinking it was an exhaust leak I went back and reset the gaskets and re-tightened the bolts but it's still there. Any suggestions? It's weird cause you can barely hear it outside the car, but inside it is very loud.

09-17-2019, 01:28 PM	#2 (permalink)
Cyber370 Track Member Join Date: Jul 2016 Location: Montreal, QC Canada Posts: 679 Drives: 2016 370Z Nismo 6MT Rep Power: 19372	Make sure your exhaust system is clearing and not resting on the center cross brace of the car. This happens a lot with aftermarket exhaust systems. Sent from my iPhone using Tapatalk ZontheRocks likes this. __________________ "That’s when you know you’ve found somebody special. When you can just shut the fck up for a minute and comfortably enjoy the silence.”-Mia (Pulp Fiction)*

09-17-2019, 10:18 PM	#4 (permalink)
BettyZ A True Z Fanatic Join Date: Aug 2018 Location: Chicagoland Age: 38 Posts: 5,261 Drives: A Garage Queen Rep Power: 2684371	If it is, you can buy some aluminized fiberglass with adhesive, and stick it on the brace. Will help prevent rattle. Sent from my SM-G955U using Tapatalk __________________ '14 MB Nismo \| Boost Lab 6870 1.32 AR 553 HP / 471 ft.-lbs. Betty Mods

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