Features 1、You can use this injector tester to help identify stuck, leaking or burnt-out conditions. 2、It uses 12V vehicle battery for power. 3、Large LED display/4 Pulse Modes. Test Lead: 41.5cm / 16.3 inches. 4、It can work with any fuel pressure tester, easily to clean most car motorcycle fuel injectors. 5、The engine of the car must be turned off before using this instrument. Specification Features: You can use this injector tester to help identify stuck, leaking or burnt-out conditions. It uses 12V vehicle battery for power. Large LED display/4 Pulse Modes. Test Lead: 41.5cm / 16.3 inches. It can work with any fuel pressure tester, easily to clean most car motorcycle fuel injectors. The engine of the car must be turned off before using this instrument. Operation Instruction 1. Turn off the vehicle's engine. 2. Connect the black clip to the negative terminal of the vehicle battery, connect the red clip to the positive terminal of the battery. 3. Locate the fuel injector which you want to test, then remove the electrical cable from this injector and connect the tester's two pulse output terminals to the electrical connector of this injector. 4. Press the MODE SET key to select the desired pulse mode, the display shows the current pulse mode. 5. After you have selected the desired pulse mode, press the PULSE key. The tester outputs pulse(s) to the injector under test, the pulse signal indicator will light as indication. PLEASE NOTE: Gasoline engine only, NOT the diese l engine. Specifications: Material: ABS Operation Environment: 0-40°C,relative humidity < 80% Storage Environment: -20°C ~50°C, relative humidity<85% Item Size: 125 * 72 * 25 mm / 4.92 * 2.83 * 0.98 inch Item Weight: 162g / 5.71oz Package Size: 19 * 16 * 3 cm / 7.48 * 6.3 * 1.18 inch Package Weight: 260g / 9.17oz Package List: 1 * Fuel Injector Detector 1 * Battery Clip 1 * Terminal Package List 1 * Fuel Injector Detector 1 * Battery Clip 1 * Terminal