Why is it prohibited to clean direct injection fuel injectors?

[CarolineAnn]

Direct injection fuel injectors are a specialized engine technology that cannot be removed for cleaning and must be replaced. If a direct injection fuel injector is severely clogged and requires disassembly for cleaning, it is recommended to have it handled by a professional repair shop. Generally, car owners cannot easily disassemble and clean it themselves, and errors during reassembly may lead to malfunctions. Fuel injector cleaning is typically performed using an automotive fuel system cleaning method. The gasoline in the fuel tank is pressurized by the fuel pump through a filter and pumped to the fuel injector via pipelines. The fuel injector, based on signals from the engine ECU, sprays fuel into the intake manifold or cylinder to mix with incoming air, which is then ignited by the spark plug for combustion. Therefore, the role of the fuel injector is to precisely deliver fuel into the engine for combustion.