You can use the fuel injector tester tool to test regular self-priming injectors and direct in-cylinder injection (GDI electromagnetic ) to help identify stuck, leaking or burned out conditions. 12V battery powered.gdi fuel injector tester can be used with any fuel pressure tester, for gasoline engines only, not diesel engines. Kit includes 2 injector adapters and an injector conversion cable to accommodate multiple injectors with different plugs. 5 pulse modes: 5 operating states: VL, VE, TL, HL, ML, to help identify good or bad injectors. Vehicle injector cleaner can display the working mode, working pulse width and working frequency of injectors, so you can set different frequency and pulse width to simulate various working conditions of engines, easy to set. Finally: We will provide you with 1 injector tester, 1 injector cleaning adapter, 1 conversion cable and 1 English instruction manual. And there is a 12-month warranty. If you are not satisfied with our products, or have any quality problems. Please contact us first, and we will solve your problem as soon as possible. KAWISH GDI Gasoline Injector Tester