What are the reasons for the fuel injector of an EFI motorcycle not spraying fuel?
1 Answers
The fuel injector may fail to spray fuel due to insufficient fuel supply, damaged fuel pump, faulty high-pressure fuel pump, clogged fuel injector, or air leakage at the fuel pipe connection. Below is more information about automotive fuel injectors: 1. Introduction: The fuel injector itself is a normally closed valve, with its opening and closing controlled by the up-and-down movement of a valve needle. When the electromagnetic coil is energized, it generates suction, lifting the needle valve to open the injection hole. Fuel is then sprayed out at high speed through the annular gap between the needle valve head and the injection hole, forming a mist that facilitates complete combustion. 2. Causes of jamming: Unclean diesel fuel or impurities in the high-pressure fuel line can prevent the needle valve assembly from sealing properly, allowing high-pressure gas from the combustion chamber to backflow and damage the needle valve assembly. Additionally, contaminants on parts such as the injector pressure-regulating spring and tappet can move to the upper part of the injector needle valve through the injector tappet, or cotton ropes or lead wires used in the fuel line to prevent leaks can enter the injector through the high-pressure fuel line, causing the needle valve assembly to jam.
