Nissan 370Z Forum  

Excessive exhaust crackling in idle?

Hi guys, Here is what my car sounds like in idle when fully warmed up (after a 40 minute drive). Is it normal for the exhaust to crackle this much?

Go Back   Nissan 370Z Forum > Nissan 370Z Tech Area > Engine & Drivetrain > Intake/Exhaust


Like Tree2Likes
  • 2 Post By JLarson

Reply
 
LinkBack Thread Tools Display Modes
Old 08-25-2021, 04:17 PM   #1 (permalink)
Base Member
 
Join Date: Jul 2019
Location: Europe
Posts: 18
Drives: 2011 370z M6 Sport
Rep Power: 5
tibor370 is on a distinguished road
Default Excessive exhaust crackling in idle?

Hi guys,

Here is what my car sounds like in idle when fully warmed up (after a 40 minute drive).

Is it normal for the exhaust to crackle this much? The crackles go away if I give it a little bit of gas, which presumably causes the exhaust to warm up a little for a short while. Then after a few seconds the crackling starts again.


http://www.youtube.com/watch?v=64RkuV_tUTo
tibor370 is offline   Reply With Quote
Old 08-25-2021, 05:45 PM   #2 (permalink)
A True Z Fanatic
 
abm89's Avatar
 
Join Date: Feb 2013
Location: Austin, Texas
Posts: 1,295
Drives: 11 370Z | 24 EL450
Rep Power: 64763
abm89 has a reputation beyond reputeabm89 has a reputation beyond reputeabm89 has a reputation beyond reputeabm89 has a reputation beyond reputeabm89 has a reputation beyond reputeabm89 has a reputation beyond reputeabm89 has a reputation beyond reputeabm89 has a reputation beyond reputeabm89 has a reputation beyond reputeabm89 has a reputation beyond reputeabm89 has a reputation beyond repute
Default

I'm going to take a guess and say that's a blown catalytic converter or resonator. No way for me to tell 100% unfortunately.
__________________
Complete Parts List:
https://github.com/abm89/ztouge-build
abm89 is offline   Reply With Quote
Old 08-25-2021, 05:56 PM   #3 (permalink)
Base Member
 
Join Date: Jul 2019
Location: Europe
Posts: 18
Drives: 2011 370z M6 Sport
Rep Power: 5
tibor370 is on a distinguished road
Default

Quote:
Originally Posted by abm89 View Post
I'm going to take a guess and say that's a blown catalytic converter or resonator. No way for me to tell 100% unfortunately.
I should probably add, that this ticking noise only happens once the car has warmed up. So it's clearly related to heat. It's the same noise that the exhaust makes when you turn off the car and the exhaust makes a ticking noise when cooling down. But my car makes a lot of these ticking sounds when it's warmed up and idling. As I said, as soon as I give it a bit of gas or when driving the ticking is not there. Just when idling after the exhaust has warmed up.

I would imagine that a bad catalytic converter or resonator would cause issues all the time, especially when driving/revving the car and not just in idle once the car is warm?
tibor370 is offline   Reply With Quote
Old 08-25-2021, 07:20 PM   #4 (permalink)
Base Member
 
Join Date: Oct 2019
Location: Chicagoland
Posts: 42
Drives: 2013 370Z M6
Rep Power: 5
CeeCab705 is on a distinguished road
Default

No engine codes? Any stumbles while driving?
CeeCab705 is offline   Reply With Quote
Old 08-25-2021, 07:22 PM   #5 (permalink)
Base Member
 
Join Date: Jul 2019
Location: Europe
Posts: 18
Drives: 2011 370z M6 Sport
Rep Power: 5
tibor370 is on a distinguished road
Default

Quote:
Originally Posted by CeeCab705 View Post
No engine codes? Any stumbles while driving?
Nope, no codes and the car drives fine and sounds fine as well.
tibor370 is offline   Reply With Quote
Old 08-25-2021, 10:58 PM   #6 (permalink)
Base Member
 
Join Date: Oct 2019
Location: Chicagoland
Posts: 42
Drives: 2013 370Z M6
Rep Power: 5
CeeCab705 is on a distinguished road
Default

Quote:
Originally Posted by tibor370 View Post
Nope, no codes and the car drives fine and sounds fine as well.
Did you do anything to the exhaust recently?
CeeCab705 is offline   Reply With Quote
Old 08-26-2021, 05:50 PM   #7 (permalink)
Base Member
 
Join Date: Jul 2019
Location: Europe
Posts: 18
Drives: 2011 370z M6 Sport
Rep Power: 5
tibor370 is on a distinguished road
Default

Quote:
Originally Posted by CeeCab705 View Post
Did you do anything to the exhaust recently?
Nope, the car is completely stock.

Would be nice to get some replies from other owners confirming whether their cars make these ticking noises when idling (once fully warmed up) or not. That's all I need to know. If it's not a normal sound for the 370z to make when idling, I'm just going to take it to the shop to have the problem diagnosed.

Last edited by tibor370; 08-26-2021 at 08:03 PM.
tibor370 is offline   Reply With Quote
Old 08-26-2021, 06:55 PM   #8 (permalink)
A True Z Fanatic
 
JARblue's Avatar
 
Join Date: Mar 2011
Location: Austin, TX
Age: 43
Posts: 36,449
Drives: 11 Z34, 98 E36 M3
Rep Power: 2684440
JARblue has a reputation beyond reputeJARblue has a reputation beyond reputeJARblue has a reputation beyond reputeJARblue has a reputation beyond reputeJARblue has a reputation beyond reputeJARblue has a reputation beyond reputeJARblue has a reputation beyond reputeJARblue has a reputation beyond reputeJARblue has a reputation beyond reputeJARblue has a reputation beyond reputeJARblue has a reputation beyond repute
Default

Mine definitely used to tick after warmup. But probably not quite that much. No clue if it's still doing it. I've gotten rid of the cats and exhaust but with the new pipes, I wouldn't be able to hear it at all.
__________________

2011 370Z 6MT Sport Gun Metallic | ARC | CJM | Ecutek | FI | Fujimura | R2C | SPL | Stillen | TWM | Z1 | ZSpeed |
JARblue is offline   Reply With Quote
Old 08-26-2021, 09:30 PM   #9 (permalink)
Base Member
 
Join Date: Oct 2019
Location: Chicagoland
Posts: 42
Drives: 2013 370Z M6
Rep Power: 5
CeeCab705 is on a distinguished road
Default

Wish I could help but mine stopped doing that once I had put a few thousand miles on the new exhaust. I know it did it when cooling down but dont remember if it did it while idling.
CeeCab705 is offline   Reply With Quote
Old 08-27-2021, 05:06 AM   #10 (permalink)
Track Member
 
Join Date: Apr 2015
Location: Columbus OH
Posts: 612
Drives: Z34|C4LT4|C6Z06|V25
Rep Power: 3365
POS VETT has a reputation beyond reputePOS VETT has a reputation beyond reputePOS VETT has a reputation beyond reputePOS VETT has a reputation beyond reputePOS VETT has a reputation beyond reputePOS VETT has a reputation beyond reputePOS VETT has a reputation beyond reputePOS VETT has a reputation beyond reputePOS VETT has a reputation beyond reputePOS VETT has a reputation beyond reputePOS VETT has a reputation beyond repute
Default

I agree that it's not a normal sound. My '11 has aftermarket exhaust and when it had stock exhaust, I don't recall it made that kind of noise.
POS VETT is offline   Reply With Quote
Old 08-27-2021, 07:44 AM   #11 (permalink)
A True Z Fanatic
 
JLarson's Avatar
 
Join Date: Jun 2017
Location: Media, PA
Posts: 4,074
Drives: 14 Nissan 370z MR M6
Rep Power: 2684369
JLarson has a reputation beyond reputeJLarson has a reputation beyond reputeJLarson has a reputation beyond reputeJLarson has a reputation beyond reputeJLarson has a reputation beyond reputeJLarson has a reputation beyond reputeJLarson has a reputation beyond reputeJLarson has a reputation beyond reputeJLarson has a reputation beyond reputeJLarson has a reputation beyond reputeJLarson has a reputation beyond repute
Default

Could possibly be a failing gasket allowing an exhaust leak.
JARblue and abm89 like this.
__________________
2014 370z Touring Sport Magma Red MT // BP Single Turbo 6467 // 63mm TB's // Z1 Ported Upper Mani // RJM Pedal // Zspeed Stage 3 Clutch // 526 WHP, 451 WTQ
2006 350z (Sold) // 1990 300zx (Sold) // 1985 300zx 2+2 (Sold)
JLarson is offline   Reply With Quote
Old 07-20-2022, 12:48 PM   #12 (permalink)
Base Member
 
Join Date: Mar 2022
Location: Utah
Posts: 3
Drives: 09 Nissan 370z M6
Rep Power: 3
HttpRyxn is on a distinguished road
Default

My Stock 2009 370Z With 51K miles Does this exact thing, I'm not sure If you found a solution but mine does crackle when it's warmed up and at idle like this. I've been concerned but no codes, drives great, so I'm not sure If its just a normal noise or something it's broken. Hoping someone has more insight on this
HttpRyxn is offline   Reply With Quote
Old 07-20-2022, 03:34 PM   #13 (permalink)
Enthusiast Member
 
filip00's Avatar
 
Join Date: May 2021
Location: slovenia
Posts: 468
Drives: 370z pack
Rep Power: 97908
filip00 has a reputation beyond reputefilip00 has a reputation beyond reputefilip00 has a reputation beyond reputefilip00 has a reputation beyond reputefilip00 has a reputation beyond reputefilip00 has a reputation beyond reputefilip00 has a reputation beyond reputefilip00 has a reputation beyond reputefilip00 has a reputation beyond reputefilip00 has a reputation beyond reputefilip00 has a reputation beyond repute
Default

My stock exhaust crackled very often and noticeable, I usually noticed it just after I turned the car off. With the new catback invidia gemini, it almost doesn't crackle at all. I suspect it's perfectly normal for stock exhaust.
filip00 is offline   Reply With Quote
Reply

Bookmarks

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On


Similar Threads
Thread Thread Starter Forum Replies Last Post
Exhaust smoke at idle dayhkr Forced Induction 13 07-22-2019 10:26 AM
new exhaust/ idle Jimbo370 Intake/Exhaust 1 11-05-2017 06:38 PM
Windshield Crackling Noise bradcc Exterior & Interior 17 07-13-2013 08:26 PM
Crackling / popcorn sound when I park. yakz Nissan 370Z General Discussions 37 04-24-2013 09:45 PM
Speakers crackling. Warranty? Z33knight Nissan 370Z Warranty / Scheduled Maintenance / Servicing / Repairs 8 08-05-2010 11:42 PM


All times are GMT -5. The time now is 12:21 PM.


Powered by vBulletin® Version 3.8.4
Copyright ©2000 - 2024, Jelsoft Enterprises Ltd.
Search Engine Optimization by vBSEO 3.6.0 PL2