A purge valve is a vital component of a vehicle's evaporative emission control (EVAP) system. Its function is to control the flow of fuel vapors from the fuel tank and evaporative canister into the ...

Modern electronic diesel engines use ultra-low sulfur diesel (ULSD) fuel and have sophisticated fuel management systems that include integrated throttle control. Use of these engines results in ...

There was a time when many 4WD enthusiasts were afraid of electronic fuel injection (EFI) on engines, preferring the “relative simplicity” of a carbureted engine that could be run in a pinch with ...

As the fallout continues from the emissions scandal engulfing Volkswagen, the car maker has said it will make its vehicles meet the United States emissions standards. But why did the German car maker ...