E39 M5 Cam Chain Tensioner Replacement

[TomTom]

I have a 2002 E39 M5 with 97k miles. I have an engine tapping/knocking noise from bank 1. I don't seem to have any hesitations or power issues. I have replaced the main chain tensioner but the noise is still there. From digging on other forums it seems it could be the cam chain tensioner that is at fault. Has anyone had the cam chain tensioner replaced? I am looking for someone in Ireland that could help me diagnose and change the tensioner if required. Any recommendations?

Healyc, Valdas and Thomas Narusa are the people to talk to.

Has the car sat for any extended periods of time?

Thanks. It has sat for a while lately but it was making this noise before that. Are you thinking it could be a stuck lifter?
[hr]

I have a 2002 E39 M5 with 97k miles. I have an engine tapping/knocking noise from bank 1. I don't seem to have any hesitations or power issues. I have replaced the main chain tensioner but the noise is still there. From digging on other forums it seems it could be the cam chain tensioner that is at fault. Has anyone had the cam chain tensioner replaced? I am looking for someone in Ireland that could help me diagnose and change the tensioner if required. Any recommendations?

There are a few but unsure about your side of the country.

I am willing to travel to get it sorted.