New Exhaust Sound
Thread Starter
MBWorld Fanatic!
Joined: Nov 2015
Posts: 1,095
Likes: 52
C63s
New Exhaust Sound
Ok - here's a new one for those with the PE...
Anyone with an idea?
Background: I had the famed exhausted squeal upon deceleration, start or rev reduction... Dealer lubed the valves and the sound appeared to have gone away for a while... On a VERY occasional basis, I still here the noise upon start.....
Current: Yesterday, upon pulling into a parking garage, I would accelerate slightly and when the revs came back down to idle, I could here "clicking".... I parked, put the car into "N" and revved repeatedly - same noise, as car settled to idle.
It's a VERY distinct click, sounds like engine valves, but it's from the underside of the car and it's only one or two clicks after each rev of the engine, before it stops. It's not engine valves because it would be constant. I can duplicate every time.
Thoughts????
Anyone with an idea?
Background: I had the famed exhausted squeal upon deceleration, start or rev reduction... Dealer lubed the valves and the sound appeared to have gone away for a while... On a VERY occasional basis, I still here the noise upon start.....
Current: Yesterday, upon pulling into a parking garage, I would accelerate slightly and when the revs came back down to idle, I could here "clicking".... I parked, put the car into "N" and revved repeatedly - same noise, as car settled to idle.
It's a VERY distinct click, sounds like engine valves, but it's from the underside of the car and it's only one or two clicks after each rev of the engine, before it stops. It's not engine valves because it would be constant. I can duplicate every time.
Thoughts????
Thread Starter
MBWorld Fanatic!
Joined: Nov 2015
Posts: 1,095
Likes: 52
C63s
Could certainly be the wastegates because reflected noise, especially higher frequencies like a tick or a click could be projected elsewhere.....
Super Member
Joined: Dec 2011
Posts: 557
Likes: 71
2016 C63S
I'm not completely sure the noise is setbing wrong. It's likely a spring loaded valve and it's just moving under vacuum. I think my BMW's exhaust made an audible flap noise too. Other than sounding a little cheap, hopefully it's not "broken".
That said, when I have a friend over who can stand outside the car, I'll see if they can identify if it's coming from the exhaust or the engine/wastegate.
That said, when I have a friend over who can stand outside the car, I'll see if they can identify if it's coming from the exhaust or the engine/wastegate.
Thread Starter
MBWorld Fanatic!
Joined: Nov 2015
Posts: 1,095
Likes: 52
C63s
I'm not completely sure the noise is setbing wrong. It's likely a spring loaded valve and it's just moving under vacuum. I think my BMW's exhaust made an audible flap noise too. Other than sounding a little cheap, hopefully it's not "broken".
That said, when I have a friend over who can stand outside the car, I'll see if they can identify if it's coming from the exhaust or the engine/wastegate.
That said, when I have a friend over who can stand outside the car, I'll see if they can identify if it's coming from the exhaust or the engine/wastegate.
My wife is gone on a mother/daughter trip, and I have no friends.
LOL
Just joshing!
I'll try to get a buddy to listen with me, as well and we can compare notes.
Trending Topics
MB World Stories
The Best of Mercedes & AMG
Manual Mercedes? 6 Times Sindelfingen Let Drivers Have All The Fun
Verdad Gallardo
Mercedes SLR McLaren 722 S Is Extremely Rare Example Modified by McLaren
Verdad Gallardo
8 Classic Boxy Mercedes Designs That Have Aged Like Fine Wine
Verdad Gallardo
Flawlessly Restored Mercedes 190E Evo II Heads to Auction
Verdad Gallardo
Electric Mercedes C-Class Unveiled: 11 Things You Need to Know
Verdad Gallardo
Mercedes EQS Gets A Major Update: Everything You Need to Know
Verdad Gallardo
5 Underrated Mercedes-Benz Models That Don't Get the Love They Deserve
Verdad Gallardo
Mercedes 300D Has Pushed Well Past 1 Million Miles and It Ain't Stopping
Verdad Gallardo
10 Most Reliable Mercedes-Benz Models You Can Buy Used
Verdad Gallardo
Thread Starter
MBWorld Fanatic!
Joined: Nov 2015
Posts: 1,095
Likes: 52
C63s
I'll give that a shot.
I'm a little slow these days, for reasons I mentioned over email.
LOL!
