Quote Originally Posted by Joe_Black
If the sound is coming from the head then it's likely the hydraulic valve-lash adjusters, which have a published known-issue of sticking from varnish build-up.
What??? The only way to adjust the valve is with a type of shim that goes on top of the valve stem. We call them lash caps at work. We do not have lifters on the vx. It is a setup were the cam opens the valves. shawn