Analysis of common failures occurred in engines with electronically controlled fuel injection system is carried out from six aspects: ECU, sensor, acuator, connection, air and fuel lines, as well as air and fuel filters.

• 从ECU常见故障,传感器故障,执行器故障,插接件(或连接导线)连接故障,连接管道松脱故障,空气、燃油滤清器堵塞故障6个方面宏观分析电喷发动机的常见故障并举例分析。