1柴油雾化柱塞副、出油阀副及喷油器针阀副的技术状态不好,均会造成喷油雾化不良,使柴油机启动困难,燃烧不完全,积炭增多,以致发动机功率下降、油耗增加,因此对燃油系,特别是精密偶件要认真进行检查。2小、孔与通孔(1)4个小孔。①油箱盖通气孔。该孔堵塞后,油箱不再与大气相通,油箱上部因油面下降会出现负压,造成供油中 1 diesel atomization of the plunger pair, the valve out of the oil and fuel injector needle vice technical status is poor, will result in poor spray atomization, diesel engine start difficult, incomplete combustion, carbon deposition increased, resulting in engine power Decline, fuel consumption increases, so the fuel system, especially precision parts should be carefully checked. 2 small, hole and hole (1) 4 holes. ① fuel tank vent. The hole is blocked, the tank is no longer connected with the atmosphere, the upper part of the tank due to the oil surface will be negative pressure, resulting in oil in the