Injector needle valve stuck

The job of the injector is to send a signal from the engine control unit, and the electromagnetic coil of the injector is energized to generate suction to drive the needle valve of the injector. Because the gap between the needle valve and the valve seat is blocked by the remaining glue, the needle valve action is astringent and cannot be opened normally, thus affecting the normal fuel injection volume. After the needle valve is stuck in the injector, the engine will have symptoms such as difficulty in starting, unstable idling, and poor acceleration. The main reason for the stuck injector is the use of inferior gasoline, because the paraffin and gum in inferior gasoline will cause the needle valve of the injector to become stuck.