The three common valve functions include stopping and starting flow, throttling (control) flow, and acting as a non-return check for flow (check). Stop/Start valves are used for systems that do not ...

The most common culprit is carbon buildup on the throttle body, exhaust gas recirculation (EGR) valve and idle air control (IAC) valve. Here well show you how to clean an EGR valve. This simple ...