When should change the fuel injector? 1. Fuel consumption increases. 2. Idle Nosie. 3. Difficulty accelerating. 4. The pedal is weak. 5. Engine jitters. 6. Lightning alert. Product Features: * Function: The injector delivers gas from the tank to the engine cylinder to provide power to the vehicle. The gas enters the injector in the form of a liquid, and is transformed into a mist and sprayed into the cylinder to achieve efficient and rapid fuel combustion. .