Knocking Turbo sound
Thread Starter
Newbie
Joined: Apr 2019
Posts: 7
Likes: 2
2020 W213 E63S AMG; 2007 Porsche Boxster
Knocking Turbo sound
Have anyone ever heard knocking sounds coming from the passenger side turbo pipes during cold start? I started the beast one morning and heard a knocking sound each second coming from passenger side turbo pipes; it sounds like someone hitting the turbo pipes with a stick. The sound goes away after 5 minutes when engine is warm. I started the beast last weekend and the knocking sound minimized a little. I went to the dealership and of course
the sound is gone. The advisor told me to have the car stay for the night and they will check it out in the morning.
Any fix or suggestion would be really helpful guys.
the sound is gone. The advisor told me to have the car stay for the night and they will check it out in the morning.Any fix or suggestion would be really helpful guys.
Senior Member
Joined: May 2004
Posts: 377
Likes: 104
From: Chicago, IL
E63S4S
Have anyone ever heard knocking sounds coming from the passenger side turbo pipes during cold start? I started the beast one morning and heard a knocking sound each second coming from passenger side turbo pipes; it sounds like someone hitting the turbo pipes with a stick. The sound goes away after 5 minutes when engine is warm. I started the beast last weekend and the knocking sound minimized a little. I went to the dealership and of course the sound is gone. The advisor told me to have the car stay for the night and they will check it out in the morning.
Any fix or suggestion would be really helpful guys.
the sound is gone. The advisor told me to have the car stay for the night and they will check it out in the morning.Any fix or suggestion would be really helpful guys.
Senior Member
Joined: May 2004
Posts: 377
Likes: 104
From: Chicago, IL
E63S4S
No...its common in high performance engines. tolerances are tight, but the material of the pistons expands as the car warms up and the tolerances when cold are larger. Nothing to worry about.
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Newbie
Joined: Apr 2019
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2020 W213 E63S AMG; 2007 Porsche Boxster
Otherwise, I love my beast!!!!
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Joined: Mar 2012
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From: Hammond, La
2018 E63S: Former cars 2016 C450, 2013 C350, 2009 C300
yeah can also confirm the knock and i have brought mine in a couple of times all say its normal and fine. I have 50k miles on mine and have not had any issues aside from potholes (i live in louisiana)
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i have a similar noises from back of the turbo, right behind in the middle of the dash. its kinda ticking noise. but weired thing is when i did cold start its nothing happened. the engine got warm the noises came out. went to dealership the other day, i was told it was something related to the injectors or fuel pump ish, its normal. the car is running pretty good and smooth with enormous power. well i just leave as it is and turn the tune up, lol. anyone has that noises?
