Some engine manufacturers such as Cummins, use injectors without connector plugs or with unmarked terminals. If this is the case, how should we connect the cables on the injector? Will the ECU show injector faults if we reverse the polarity? Does injector polarity matter?
Diesel Common Rail Fuel systems are utilised to increase engine power, reduce emissions and make Diesel engines run smoother and more “civilized”. However they require special treatment and could pose a significant health risk if the person working on the system does not know its basic principles.
Due to new, stricter emission legislation, all new Diesel engines need to be equipped with a special catalyst (SCR) to reduce harmful NOx emissions to Water, Nitrogen and Carbon Dioxide. Sounds easy? Well… it’s not that simple. Keep reading to understand why!