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故障现象一辆2010款江铃陆风X8车(配置R425DOHC电控高压共轨柴油发动机),累计行驶里程约为7.2万km。驾驶人反映,该车发动机在停机60 min后或气温较低时,其起动性能较差,起动机需持续运转4s以上才能着火,有时要多次起动才能成功。故障诊断本着先易后难、由外向内、先机械后电子的原则,将该车停放一夜后再进行排查。先直观地检查了发动机燃油系统各部件的连接部位、电控系统各线束连接器和线束的连接情况,以及发动机预热系统,均未发现异常。然后尝
Failure phenomenon A 2010 Jiangling Landwind X8 car (configuration R425DOHC electric high pressure common rail diesel engine), the cumulative mileage of about 72,000 km. The driver reflected that the car engine 60min after shutdown or when the temperature is low, the starting performance is poor, the starter needs to be operated continuously for more than 4s in order to fire, and sometimes to start repeatedly to be successful. Troubleshooting in the first easy aftermath, from outside to inside, the first mechanical principle of electronic, the car parked overnight after investigation. First intuitively examined the connection parts of the engine fuel system components, the connection of each harness connector and wiring harness of the electronic control system, and the engine warm-up system, were found no abnormalities. Then taste