Strange sound when acceleration m156 (video YT)
03-26-2024, 03:27 PM
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W212 e63
Strange sound when acceleration m156 (video YT)
I have a w212 e63 amg m156. I have a problem with sounds when accelerating. Above 3000 rpm there is an audible sound similar to a whistle or a compressor 
the problem started after entering the vehicle where the entire exhaust system with catalytic converters comes from. The bracket is 100% OK. Be a manager in a professional workshop. It seems to me that the outlet is also well sealed, although it may be too tight because at low speeds (800-1000) it is sensitive to slight shaking. It's definitely not the alternator or the power steering pump or any pulley because it's the same without the V-belt. What comes to mind is either a leaky exhaust somewhere between the exhaust manifolds and the catalytic converters, or I'm unlucky and accidentally have a leak in the intake manifold. Do you have any ideas ?
Video YT: https://youtube.com/shorts/ZQv4EiHNF1Q?si=q2kUS_u2fcSsP9OF
the problem started after entering the vehicle where the entire exhaust system with catalytic converters comes from. The bracket is 100% OK. Be a manager in a professional workshop. It seems to me that the outlet is also well sealed, although it may be too tight because at low speeds (800-1000) it is sensitive to slight shaking. It's definitely not the alternator or the power steering pump or any pulley because it's the same without the V-belt. What comes to mind is either a leaky exhaust somewhere between the exhaust manifolds and the catalytic converters, or I'm unlucky and accidentally have a leak in the intake manifold. Do you have any ideas ?Video YT: https://youtube.com/shorts/ZQv4EiHNF1Q?si=q2kUS_u2fcSsP9OF
