How to determine small exhaust leak?
#1
Registered User
Thread Starter
iTrader: (9)
Join Date: Nov 2005
Location: NYC
Posts: 4,080
Likes: 0
Received 0 Likes
on
0 Posts
![Default](https://my350z.com/forum/images/icons/icon1.gif)
When I'm driving nearby a wall, let's say, and I either accelerate or decelerate, I can hear a funny noise bounce off the wall. It almost sounds like air coming from a deflating balloon, or perhaps the sound you get when you stick a card in between the spokes of a bicycles wheels. It's not extremely audible, and it cannot be heard when I'm in an open space, but it does seem unusual. Could I have a hole in the exhaust somewhere?
I'll take the car to my mechanic this week, but in the meantime I'd like to hear of a few ideas of what it could be.
I'll take the car to my mechanic this week, but in the meantime I'd like to hear of a few ideas of what it could be.
Trending Topics
#8
Registered User
iTrader: (3)
![Default](https://my350z.com/forum/images/icons/icon1.gif)
I've got something similar going on, but I heard it was normal. It does sound like a fluttering though. It's almost like a metal on metal vibration during hard acceleration through 1st / 2nd gear or during deceleration after a hard acceleration. (Does this most noticeably in neutral revs though)
I do notice that condensation comes out from numerous joints, but no amount of torquing or tightening the clamps seems to stop it. No air can be felt coming out of these joints though. Just a slow forming condensation that appears. (At first it leaked constantly, but then I adjusted on of the clamps and it only happened during hard driving or revs)
I really want it to go away, because I hate that sound when trying to show off my exhaust. Nice deep, bass-y tone and then *RATTLE*.
I do notice that condensation comes out from numerous joints, but no amount of torquing or tightening the clamps seems to stop it. No air can be felt coming out of these joints though. Just a slow forming condensation that appears. (At first it leaked constantly, but then I adjusted on of the clamps and it only happened during hard driving or revs)
I really want it to go away, because I hate that sound when trying to show off my exhaust. Nice deep, bass-y tone and then *RATTLE*.
![Frown](https://my350z.com/forum/images/smilies/frown.gif)
#9
Registered User
Thread Starter
iTrader: (9)
Join Date: Nov 2005
Location: NYC
Posts: 4,080
Likes: 0
Received 0 Likes
on
0 Posts
![Default](https://my350z.com/forum/images/icons/icon1.gif)
The metal on metal sound you're experiencing is your Borla hitting the EVAP Canister (the black box on the left). I had the same sound and I had the canister relocated slightly.
Just to update: The barely audible noise happens at 2500RPM when driving. But can also be made when in Neutral, though only when the engine is slowing down.
Just to update: The barely audible noise happens at 2500RPM when driving. But can also be made when in Neutral, though only when the engine is slowing down.
#11
Registered User
Thread Starter
iTrader: (9)
Join Date: Nov 2005
Location: NYC
Posts: 4,080
Likes: 0
Received 0 Likes
on
0 Posts
![Default](https://my350z.com/forum/images/icons/icon1.gif)
Originally Posted by frankie945
make sure the H in the borla exhaust is tight mine got loose somehow and made a audio difference. I tightened it no more nose.
This is most likely why so many people go for the Magnaflow H-pipe, and claim it's quieter - because it doesn't have those slits. In any case, the pipes were pushed back in together and the clamp tightened down stronger and at a better location.
Last edited by SniperHunter; 04-16-2008 at 10:03 AM.
Thread
Thread Starter
Forum
Replies
Last Post
Justin100
Intake Exhaust
26
11-29-2015 03:58 PM