Fuel Injector Tester & Cleaner L-100 1. LCD display; 2. Ultrasonic ... unit is used for checking and cleaning the auto fuel injector and is the first choice for auto’s maintenance, ... including dealing with dribbling, blocking, pulverization and the injector’s angle. The unit can also control the quantity ... color for your choice: blue or red Auto Fuel Injector Tester & Cleaner MST-L100 with digital screen