EM276 Injector Tester can diagnose injector problems, you can use it on each injector individually to test stuck, leaking or burnt-out,which used 12V vehicle battery as power supply,it has 4 pulse modes and in the continuous working mode (mode 4) and can help you identify the injector good or not when you switch off the engine.
GIT-01 Fuel Injection Drivebox With Universal Plugs to Test All kinds of Injectors Frequency Lock Function
GD1 Universal Fuel Injector Drivebox Fit All Kinds of Injector Interface Automatically Detect Injector Type