Hi, A strange ticking noise has started coming from my engine (6G74) posted a video below. It's quite loud compared to the video, Car has done 222,xxx.
Speeds up as the revs go up.

If anyone can tell me what is wrong and how much it will cost to fix it would be greatly appreciated
Thanks


https://www.youtube.com/watch?v=nNYxs9KXn6A&feature=youtu.be

Thats either something loose around the belt area, forget the name of the part or it's the lifters ticking which is cheap for parts but tough on Labour