The maintenance of the injector mainly includes the following aspects: the appearance of the injector: check whether the shell of the injector has obvious damage, whether the nozzle is seriously carbonized, whether the filter is blocked, etc.
Resistance test of the injector: Use a multimeter to measure the resistance between the two terminals of the injector to check for short circuits, open circuits, or ground faults in the coil. Seal test of the injector: Observe whether there is any dripping or leakage over a specified period to assess the seal integrity of the injector.
The atomization performance of the injector is checked by observing whether the fuel is atomized and whether the size of the atomized particles is uniform.
The fuel injection amount of the injector is checked on the special equipment or by other methods to simulate the engine working condition, and the fuel injection amount and uniformity of each injector are checked whether they meet the requirements.
The circuit of the injector is checked by using the oscilloscope to measure the waveform of the control signal and the fault diagnosis instrument to read the pulse width of the control signal.