Author Topic: Friends gasser Mercedes GL sounds...interesting.  (Read 140 times)

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Offline Submariner

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Friends gasser Mercedes GL sounds...interesting.
« on: June 06, 2019, 02:34:53 pm »


Long story short: this is a 2016 GL450 with the 3.0TT V6.  It has about 36,000 miles on it.  The exhaust sounded like this after about an hour of around town driving. 

Any ideas?

Offline BimmerM3

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Re: Friends gasser Mercedes GL sounds...interesting.
« Reply #1 on: June 06, 2019, 02:38:33 pm »


Long story short: this is a 2016 GL450 with the 3.0TT V6.  It has about 36,000 miles on it.  The exhaust sounded like this after about an hour of around town driving. 

Any ideas?

I'm not getting any audio.
-Charlie
2008 Honda S2000 - 2006 Ford Explorer - 1986 Yamaha YX600 Radian that I don't know how to ride

Offline FoMoJo

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Re: Friends gasser Mercedes GL sounds...interesting.
« Reply #2 on: June 06, 2019, 02:43:06 pm »
Muffler shot?
"The only reason for time is so that everything doesn't happen at once." ~ Albert Einstein

Offline Submariner

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Re: Friends gasser Mercedes GL sounds...interesting.
« Reply #3 on: June 06, 2019, 02:48:41 pm »
I'm not getting any audio.

I tried it on my iPhone and laptop.  Itís working for me.

Offline shp4man

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Re: Friends gasser Mercedes GL sounds...interesting.
« Reply #4 on: June 06, 2019, 03:21:33 pm »
Possibly bad catalytic converter. Possibly covered under emissions warranty.
But it's hard to be accurate at diagnosis over the phone.  :huh: Check engine light on?

Offline Submariner

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Re: Friends gasser Mercedes GL sounds...interesting.
« Reply #5 on: June 06, 2019, 03:34:14 pm »
Possibly bad catalytic converter. Possibly covered under emissions warranty.
But it's hard to be accurate at diagnosis over the phone.  :huh: Check engine light on?

No...no indications besides the noise.  He says itís driving normally today.

Offline Soup DeVille

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Re: Friends gasser Mercedes GL sounds...interesting.
« Reply #6 on: June 06, 2019, 04:13:36 pm »
It sounds kinda like a loose heat shield, which is super common on some vehicles.
We should get into the sympathy business.  There is a killing to be made.

Offline BimmerM3

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Re: Friends gasser Mercedes GL sounds...interesting.
« Reply #7 on: June 06, 2019, 04:22:03 pm »
I tried it on my iPhone and laptop.  Itís working for me.

Weird. It works on my Macbook, but not my Windows 10 desktop (and I double checked that audio from other sites was working).
-Charlie
2008 Honda S2000 - 2006 Ford Explorer - 1986 Yamaha YX600 Radian that I don't know how to ride

Offline Submariner

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Re: Friends gasser Mercedes GL sounds...interesting.
« Reply #8 on: June 06, 2019, 05:18:34 pm »
I should mention that about a week ago, he complained of a strong, rich exhaust smell during startup.  Not sure if that is coincidence or not...

Offline Eye of the Tiger

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Re: Friends gasser Mercedes GL sounds...interesting.
« Reply #9 on: June 06, 2019, 05:24:31 pm »
I should mention that about a week ago, he complained of a strong, rich exhaust smell during startup.  Not sure if that is coincidence or not...

That's probably normal
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Offline Submariner

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Re: Friends gasser Mercedes GL sounds...interesting.
« Reply #10 on: June 06, 2019, 08:27:15 pm »
That's probably normal

I just smelled it...itís like straight gasoline.

Offline shp4man

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Re: Friends gasser Mercedes GL sounds...interesting.
« Reply #11 on: June 06, 2019, 08:32:26 pm »
Sounding more like a bad cat. Raw gas destroys cats, so something like a leaking injector or a misfire can do damage. The "honeycomb" inside the cat breaks up and starts rattling around.
It could also be a heat shield and a cold engine.   ;)

Offline Submariner

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Re: Friends gasser Mercedes GL sounds...interesting.
« Reply #12 on: June 06, 2019, 08:41:21 pm »
Sounding more like a bad cat. Raw gas destroys cats, so something like a leaking injector or a misfire can do damage. The "honeycomb" inside the cat breaks up and starts rattling around.
It could also be a heat shield and a cold engine.   ;)

Could be the heat shield...same thing happened on my dads G500, though it sounded vastly different and was persistent for the entire time the engine was on.

I donít think the engine was cold, though, for the gas smell or the diesel rattling.