Help with engine noise

[chr999chr]

Anyone know what this noise is on my B7 20tdi?
Seems to be coming from the bulk head area. Comes and goes but always the same noise

https://www.dropbox.com/s/n8zxdvnpxwm8ma1/IMG_0169.mp4?dl=0

 

[chr999chr]

Broken gear inside the egr valve