BMW 6 Series - Tech Talk E24,E63,E64,F12,F13
Last weekend I removed all 4 vanos solenoid valves, gave them a clean, and re-fitted them with new o-rings.
It was a bit fiddly, but despite appearances the only things you need to get out of the way to do the job are the air intake duct and the fuel vapour purge valve. It's also very...