Dear Tom and Ray: My 2006 Honda Element has 108,000 miles. The dealer recommends a valve-clearance adjustment at this time. Is this a service you would recommend, or is it not necessary? Please ...

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 ...

1 Before you get started, check your pushrods for straightness by rolling them on a flat surface, and inspect the tips of the rocker arms for signs of wear or metal burrs, which will mean a short ...

Adjusting overhead valves on heavy-duty ­diesels is a routine maintenance item subject to benign neglect in many of today’s fleets. The hardware that links the camshaft to the valves and some ...

On/off valves are basically on/off switches for hydraulic systems. They are typically installed in applications where precise position or speed control is not required. Proportional valves adjust flow ...