The air compressor unloader valve is what makes the “psssssst” sound when the motor shuts off after reaching operating ...

Separating the crankcase from the intake manifold, which is a source of varying air pressure, the PCV valve maintains the optimal level of vacuum in the crankcase to extract the products of blow ...

Swiftly remove the gauge from the tire’s valve stem after the stick pops or the dial moves. If you hear escaping air, stop, reset the gauge (if necessary) and try again. If the tire pressure is ...