1.拖拉机发动机喷油泵供油偏晚,导致大量柴油未经过燃烧就变成炭粒排出机外,此时,应调整供油时间。 2.喷油头压力不准。喷油头应校正测试后再装机使用;油头柱塞和出油阀严重磨损的应更换。 3.柱塞副磨损后,泵油油量泄漏较多,油压上升迟缓,致使油嘴雾化不良和喷油滞后,造成燃烧不良,油耗增加,应更换柱塞副。 1. tractor engine fuel pump fuel supply is late, leading to a large number of diesel fuel has become a charcoal discharged outside, this time, you should adjust the fuel supply time. 2 nozzle pressure is not allowed. Fuel injector calibration test should be installed before use; Exhaust plunger and valve serious wear and tear should be replaced. 3. After the plunger pair wear, more pump oil leakage, slow rise in hydraulic pressure, resulting in poor nozzle atomization and fuel injection lag, resulting in poor combustion, increased fuel consumption, should replace the plunger pair.