Quote Originally Posted by russiankid View Post
Vanos likes to make noises when its showing signs of wear, and its located in the front of the engine.
Yes, and having just replaced mine using drvanos' kit, a worn out VANOS sounds kind of like a diesel at idle. If you rev it, you'll hear another loud noise under the hood that has been described as rocks in a can. To me it sounds more like a coarse metallic buzz that is obvious from the VANOS unit itself.

http://www.youtube.com/watch?v=yOxd-O6NtDc