Hi all

Please help me........ I'm after some advice.

I have a 2005 2.0 turbo TFSI, it has a loud tapping noise at the back of the engine, I have done some research on it and it seems it could be the cam chain tensioner. I have stripped the engine down today and removed the tensioner and have checked this for signs of damage but all looks ok, I am unsure of how much pressure is needed to squeeze the tensioner in order for it to run correctly.
Has anyone here changed a cam tensioner for a similar/ same noise? Or does anyone have any other idea as to what else it could be?

Thanks in advance