This fuel injector tester can help diagnose injector problems, you can use it to test each injector individually to help indentify stuck, leaking or burnt-out conditions.

This injector tester tool has 4 pulse modes, the continuous mode( mode 4) helps indentify good or bad injector. And the mode lock feature ensures test condition uniformity

The injector tester circuit can use to 12V vehicle battery for power, and it can work with any fuel pressure tester together.