What are the reasons for the fuel injector not spraying fuel?
1 Answers
Possible causes include insufficient fuel, damaged fuel pump, or high-pressure fuel pump failure. Below is a related introduction: Fuel Injector: The fuel injectors used in modern cars are essentially simple solenoid valves. When the solenoid coil is energized, it generates a magnetic force that lifts the needle valve, opening the injection port. Fuel is then sprayed at high speed through the annular gap between the needle valve tip and the injection port, forming a fine mist to ensure complete combustion. Definition: A fuel injector is normally a closed valve (a normally closed valve remains shut when there is no control signal input, whereas a normally open valve remains open without a control signal), with its opening and closing controlled by the up-and-down movement of the valve needle.