The symptoms of fuel injector damage are:
1, the valve hole is blocked resulting in the inability to spray oil or poor atomisation;
2, needle valve failure leads to flow error or leakage after spraying;
3, Connector disconnection or short circuit resulting in failure to inject oil;
4, the engine can not start;
5, unstable engine running;
6, exhaust serious black smoke.
The main role of the injector are:
1, improve oil pressure: increase the injection pressure to 10MPa to 20MPa;
2, control the injection time: according to the specified time to spray and stop spraying;
3, control the amount of injection: according to the working conditions of the diesel engine, change the amount of injection, in order to regulate the speed and power of the diesel engine.