2013 G63 AMG Engine Knock?
Out Of Control!!
Joined: Apr 2019
Posts: 11,966
Likes: 6,806
From: Silicon Valley
W212 MY'14 M276-3.5NA @75kMi
Cabin Well Insulated...
I can't hear anything...
Is this standard VVT rattle or bend/loose rod knock?
Bore scope cylinders walls for impacts.
Visually inspect oil filter for light metals.
Is this standard VVT rattle or bend/loose rod knock?
Bore scope cylinders walls for impacts.
Visually inspect oil filter for light metals.
Last edited by CaliBenzDriver; Sep 25, 2025 at 12:54 AM.
Out Of Control!!
Joined: Jun 2004
Posts: 13,799
Likes: 3,229
2014 E63S; AMS 100 octane ECU dyno tune; EDOK TCU tune; BB intakes; sprintbooster
I can't hear anything - certainly not if any knock is something from top or bottom end.
What I hear sounds like my m157 and normal
but I know that if I was sitting there in front of the engine while it was running, I may be able to hear a knock that I'm not able to hear based on your recording.
can you get an audio clip with the hood open from outside the car near the engine bay and can you also get a video clip from the exhaust side just in case this is a misfire you're hearing?
clip of normal m157:
https://mbworld.org/forums/ml63-amg-...ml#post8671917
clip of real knock on m157:
https://mbworld.org/forums/w212-amg/...ml#post8143581
another clip:
clip of misfire that is mistaken for bottom engine issue:
https://mbworld.org/forums/w212-amg/...h-exhaust.html
now that you own an M157 engine, you should take a look at this sticky (above clips are all from the sticky)
https://mbworld.org/forums/w212-amg/...fixes-diy.html
What I hear sounds like my m157 and normal
but I know that if I was sitting there in front of the engine while it was running, I may be able to hear a knock that I'm not able to hear based on your recording.
can you get an audio clip with the hood open from outside the car near the engine bay and can you also get a video clip from the exhaust side just in case this is a misfire you're hearing?
clip of normal m157:
https://mbworld.org/forums/ml63-amg-...ml#post8671917
clip of real knock on m157:
https://mbworld.org/forums/w212-amg/...ml#post8143581
another clip:
clip of misfire that is mistaken for bottom engine issue:
https://mbworld.org/forums/w212-amg/...h-exhaust.html
now that you own an M157 engine, you should take a look at this sticky (above clips are all from the sticky)
https://mbworld.org/forums/w212-amg/...fixes-diy.html
Last edited by PeterUbers; Sep 25, 2025 at 01:18 PM.
