1.油箱盖通气孔堵塞引起供油少一台柴油机没有劲,转速不稳忽高忽低,高速时更明显,冒烟较小,检查发现原来是油箱盖通气孔被杂质堵塞,清洗了油箱盖,通气孔畅通后,故障随即排除。 2.喷油泵固定螺钉损坏引起供油晚一台柴油机压缩和燃油系统良好,但是难起动,功率不足,温度较高,冷车冒白烟,热车冒黑烟。经检查,发现固定喷油泵的3个M8×22螺栓和螺母有2个配合螺纹损坏,而另一个螺母没 1. Gas cap plugging caused by less oil supply Diesel engine is not strong, the rotational speed fluctuated, more obvious at high speed, smoke smaller, the inspection found that the fuel tank cap vent was blocked by impurities, cleaning the fuel tank Cover, vents open, the fault immediately ruled out. 2. Fuel pump fixing screw damage caused by a late supply of diesel compression and fuel system is good, but difficult to start, lack of power, high temperature, cold white smoke, hot black smoke. After examination, found that the fixed injection pump 3 M8 × 22 bolts and nuts have two mating thread damage, and the other nut did not