This short presentation walks through a live bench test of the Delphi 22459521 injector on the JZ-618 diesel test bench. Watch how the unit is mounted, how test parameters are set, and how spray patterns and return flow are observed during the run. The demo highlights the JZ-618's interface and workflow, offering a practical look at how common-rail injectors are verified in real service settings. Ideal for technicians and workshop owners evaluating diagnostic equipment.