Strange ratling engine sound, help finding it

[wawa]

Update to let you all know, the noise was from bad alternator bearing. The free pulley was not free anymore and bearing were making noise. All gone now, yeee!

Later
Chris



I hear a strange ratling engine sound from my 2000 Boxster S

At first I though it was a belt tensioner, the lower one. It was loose, so I change it, but sound is still there.

Can you help finding it?

Here is a youtube video


Stange sound, 2000 Boxster S - YouTube

Thanks
Chris