Under a tree, in a remote corner of the earth, there is a guy adjusting his hydraulic valve lash with the valve cover off and the engine running. Yes, it's true. We've seen it. Proof is that you can ...

Setting valve lash has nearly become a lost art. Hydraulic lifters are so prevalent and so efficient that many enthusiasts resort to the old way or doing it—engine running, oil spewing everywhere. Let ...

Before the implementation of hydraulic lifters to keep the engine's valves in proper working order, regular adjustment was required to maintain the critically necessary clearance in the valvetrain.