SOLVED - E53 4.8is ticking noise - valves?

[pw44]

Hi all,
after lot of investigation, the reason was found: one defective spark coil and defective MAF.
After changing the coil, noise is gone, but the engine sometimes dies when idle. I guess this is due the defective MAF.
The MAF i ordered and will also be replaced, and see if the problem with motor cutting of when idle is gone.
Thx all who tried to help.
Best regards!


Hi dear fellow experts,
my E53 4.8is year 2006 begun some weeks ago with an ticking noise, that i'm not being able to diagnose.
This noise shows up when gear is engaged (D or R) and mostly when under 2,000 rpm.
The noise is not constant, but floating (comes and goes) depending of rotation change.
When gear is N or P, it does not shows up.
Anyone with such experience and with some hint what it could be and how to fix it?
The video shows it, having gear in D (braked) and then no ticking after gear was put in P.
tickingnoise - YouTube
Thanks in advance and best regards
PW44