On engines equipped with hydraulic tappets, zero lash at maximum tappet plunger rise can be determined by rotating the pushrod with your fingertips while slowly turning the lash adjusting nut. The ...

Even so, the relatively heavy hydraulic valvetrain probably won't do a good job controlling the cam's signals above 6,500 rpm. For the price of a lash adjustment every few thousand miles, a ...

Modern internal combustion engines — including those that run on diesel fuel — require a lot of special parts and systems to prevent dumping excess emissions into the atmosphere. Not only are those ...