Engine weird sound

[UNGKARL]

Hi.
I got this sound on my 1.4 TSI Twincharger today.
It goes away from what i can hear above 1800 RPM but can be heard at idle. What could it be?

1.4 TSI twincharger knocking sound

FOR ANYONE WATCHING THIS - IT WAS THE WATERPUMP.

www.youtube.com

Thanks in advance!