Camshaft, lifters...(not all cars), rocker arms, push rods (not all cars), valves.
You don't. If you have valve train clatter, you have worn valve train parts.
No adjustment. If there is valve clatter, valve train parts are worn.
Probably worn valve train parts.
No adjustment required. If you have a noisy valve train, parts are worn.
There is no valve adjustment for that engine. If you have valve clatter you must have worn valve train parts.
It has hydraulic lifters, no adjustment. If you have valve noise you probably have worn valve train parts. Replacement of worn parts would be required.
The lifters are hydraulic and require no adjustments. If you have valve clatter you have worn valve train parts.
The valve lash is not adjustable on that engine. The rocker arms are bolted down and torqued to specs. If you have valve clatter you have worn valve train parts.
There is no valve adjustment on that engine. If you have noise coming from the valve train you probably have worn parts such as camshaft, lifters, pushrods, rocker arms and valves.
Fewer moving valve train parts such as the push rods.
The main parts of control valve are actuator, diaphragm casing, bonnet,yoke,stem,seat,travel indicator,positioner
Noisy valve train. Remove the valve cover and inspect the valve train.