Metallic Noise BMW M47 HELP

[IKilledyou2b]

Hello everyone, I am calling on all the Bmw specialists on this forum because I have a metal noise problem on my car, it is a BMW 1 series 18d 122hp engine code M47 V.I.N: WBAUG31000PU47817 I will give you a YouTube link to listen to this noise I vehicle is well maintained the oil change was done 2 weeks ago the clutch is new the oil separator as well and the pulley damper to I was replaced yesterday but the noise is still present, according to my mechanic the timing chain is good, the vehicle works perfectly despite this noise, please help me Youtube Vidéo