Engine noise help

[Zedyx]

Hi all
Bought a 2003 3.0 z4 few months back and have been thoroughly enjoying it. However I've notice a sound from the engine when warm (does not do this when cold). The engine shows no other symptoms. It idles smoothly, revs like double cream and pulls strongly. Just wondering if this is just one of those harmless mechanical noises or a sign of impending doom, or somewhere in between! Thanks

http://m.youtube.com/watch?v=Vmyjax-iQ_0&app=m&persist_app=1

 

[andrewr]

It might be worth opening up the bonnet to see if you can locate where the sound is coming from. It's difficult to tell from the short video, but as the sound is quite noticeable, it should be easy to locate it.

Andrew.

 

[Zedyx]

I left the bonnet closed as the noise is more noticeable that way. Having trouble locating the noise with the bonnet open as the noise seems to be less noticeable with the background hum of the engine