I posted on your other thread of how does the tensioner work. About the last comment I have is if the car has the wrong type tensioner installed.

I think you stated you can depress the tensioner back a substantial distance. That would seem to indicate a non ratcheting type. Also compare the part numbers between the old and new.

If you changed tensioners because of preventative maintenance other than failure try the old tensioner in position to see if the noise is gone.