Friends.
In july I bought a used 2014 BMW F30 320D M packed with 50.000km on the clock.
From the start I noticed a weird sound everytime I turned the a/c on. When the blower door opens a metal sound comes from the engine. And when it closes, the sound seems to dissapear.
I have here a little video so you guys can hear it.
Is this the timming chain failing?
Thank you for the help everyone. I really appreciate!
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