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四、燃油系统常见故障分析燃油系统常见的故障主要有柴油机的启动困难、动力不足、排烟不正常、工作粗暴等。(一)柴油机启动困难1.现象当启动机正常工作而柴油机不能启动时,多为燃油供给系工作不良引起的,常见的故障现象如下: (1)柴油机无启动迹象,排气管无烟排出。(2)柴油机有起动迹象,排气管冒白烟,但不能发动。2.原因(1)属于低压油路的原因①柴油箱内无油或燃油不足。②柴油箱开关未打开或油箱盖通气孔堵塞
Fourth, the common fault analysis of the fuel system Common faults of the fuel system are the main difficulties of starting the diesel engine, lack of motivation, exhaust smoke is not normal, such as rough work. (1) Difficulty in Starting Diesel 1. Phenomenon When the diesel engine can not start when the starter is working normally, it is mostly caused by the poor working of the fuel supply system. The common faults are as follows: (1) The diesel engine has no start-up signs and the exhaust pipe emits smokeless . (2) There are signs of starting the diesel engine, the exhaust pipe to take white smoke, but can not start. 2. Reason (1) Reasons for the low-pressure oil circuit ① There is no oil or insufficient fuel in the diesel tank. ② The diesel tank switch is not open or the fuel tank cover vents are blocked