How to check whether the fuel injector is broken?

Check the quality of the fuel injector as follows:

1, which can be detected in the car. Start the vehicle first to make the water temperature of the vehicle reach the normal range. On the premise of no fault code, the vehicle speed will increase rapidly with the increase of throttle. The sound of the engine is clear and powerful, which proves that the engine is in normal condition.

2. Test on the engine. Start the engine and pull out the fuel injector harness connectors one by one. If the engine jitter increases, it is good. If there is no obvious change in jitter, the fuel injector is broken.

3. Remove and test. Check the fuel injection with the fuel injector atomization tester. If it doesn't inject oil, it must be broken. If the spray atomization is obviously worse than the others, the explanation is also poor. If it is professional, it is necessary to return the injector to the injector manufacturer for analysis.

: 1. There are two kinds of nozzle failures:

1, mechanically stuck or blocked;

2. Circuit failure.

Second, the solution:

In view of the first case, it can be removed and put on the syringe cleaning agent for experiments.

In the second case, you can read the fault code through the decoder, or hear the working sound of the injectors one by one through the stethoscope, or you can measure whether the control signal and coil of each injector are normal.