Hydraulic Electronic Unit Injector (HEUI) Testing Bench

This paper presents a suggested injector test bench construction, and also testing of its performance and application, because there is no device for testing the workability for this kind of injectors. Also, service dealers in Jordan and Middle East replace all injectors of any equipment, equipped with this kind of injectors when an overhaul for the engine is needed, which means at least eight injectors are replaced even if not all of them are not working properly. So, this bench will save a lot of money if the properly working injectors are not replaced; knowing that each single injector costs around $1900. When testing the injector, it could be known from the problem existed after analysis, the type of maintenance needed for this injector.