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车型:G12,配置B48发动机。行驶里程:15860km。故障现象:B48发动机进水且怠速抖动。故障诊断:发动机怠速不稳定,观察4个缸的平稳值有大有小,都在1~25内来回变动,断缸测不出问题。故障可能原因如下:进气系统排气系统燃油供给系统电路故障机械问题此车发动机进水且熄火后,客户又启动了3次没有着车,于是就拖车进店了。拆下火花塞观察发现4个缸内燃烧室存满积水,建议客户拆检发动
Model: G12, configuration B48 engine. Mileage: 15860km. Symptom: B48 engine water and idling jitter. Troubleshooting: Engine idle speed instability, observe the smooth value of 4 cylinders are large and small, all within 1 to 25 changes back and forth, broken cylinder test no problem. Possible causes of the malfunction are as follows: Intake system Exhaust system Fuel supply system Circuit failure Mechanical problems After the engine was flooded and the engine was shut down, the customer activated another 3 times without a car and went into the trailer. Remove the spark plug observation found 4 cylinder combustion chamber full of water, it is recommended customers dismantling inspection