AERMOTOR Automobile Pulse Fuel Injector Fault Detector 1. Helps you diagnose and clean fuel injectors, easily identifying common faults such as stuck, clogged, leaking, or burned fuel injectors. 2. Features two pulse output temperatures (two pairs of test leads) for simultaneous testing of two fuel injectors for comparison. 3. This fuel injector tester kit features an LCD display and eight pulse modes, including four pulse signal output modes and two output voltage levels: shortmediumlongcontinuous pulse modes, and highlow (12V5V) power drive modes. 4. Helps you identify good and bad injectors with the engine off. 5. Select any mode as needed, and its mode lock feature ensures consistent testing conditions. 6. Compatible with 12V injectors from nearly all vehicle models, suitable for both EFI and GDI injectors. 7. The power cord is up to 40 inches100 cm long, and the test leads are 20 inches long, making it easy to connect and use. 8. The wires are made of high-quality silicone for improved high and low temperature resistance. 9. Powered by a 12V battery or an external DC 12V (minimum 1.5A recommended) power adapter. 10. Operates with the engine off and works with any fuel pressure tester (Note: gasoline vehicles only, not diesel engines). 11. Features power input reverse connection protection and output short-circuit protection. If the fuel injector is damaged or the pulse output terminal is short-circuited, the fuel injector cleaning tools power indicator will flash.