Mechanical Failure Of The Injector

Mechanical failure of the injector

Common failures include mechanical failures and circuit failures. Mechanical failures include stuck injector spools, clogged injectors and leaks. When the above failure occurs in the injector, the mechanical action will fail, thus affecting the normal operation of the engine, and sometimes even causing serious engine failure.

Folding injector needle valve stuck:

The job of the injector is that the engine control unit sends a signal, and the solenoid of the injector is energized to generate suction, thereby driving the needle valve of the injector. Because the gap between the needle valve and the valve seat is blocked by residual glue, the needle valve is stuck and cannot be opened normally, which affects the normal fuel injection volume. When the injector needle valve is stuck, the engine will have symptoms such as difficulty in starting, unstable idling, and poor acceleration. The main reason for the needle stuck in the injector is the use of inferior gasoline, because the inferior gasoline contains paraffin and colloid, which leads to the needle stuck in the injector needle valve.

Folding injector clogged:

Injector blockage can be divided into internal blockage of the injector and external blockage of the injector head. The internal blockage of the fuel injector is mostly because the impurities and dirt mixed in the gasoline block the movement gap of the needle valve inside the fuel injector, so that the mechanical action of the fuel injector is abnormal. When the injector is blocked, the engine will have some symptoms, such as difficulty in starting, unstable idle speed, poor acceleration, etc. In severe cases, the engine will even shake severely, and the related mechanical parts will also experience abnormal wear.

Folding injector leaking:

Injector leakage faults are generally divided into internal leakage and external leakage. The internal leakage of the injector is mostly due to its early wear during use, which causes it to continuously leak fuel into the intake manifold under the action of system pressure. The external leakage of the injector mostly occurs at the connection between the injector and the oil rail, and the sealing surface is not sealed.