故障现象一辆2014年产福田时代骁运车,配备4A1-68C40全柴发动机,累计行驶里程约为6.5万km。驾驶人反映在行驶途中,发动机越来越无力,最后自动熄火,再也无法起动,在路上拆下柴油高压油泵、喷油器调试后,发动机还是无法起动。故障诊断接车后试车,起动机工作有力,发动机排气管口不冒烟,仪表盘上发动机故障灯异常点亮。按压柴油输油泵,排尽油路中的空气,松开喷油器上高压油管,起动 Symptom A 2014 Futian era boxing car, equipped with 4A1-68C40 full diesel engine, a total mileage of about 65,000 km. The driver is reflected in the journey, the engine more and more weak, the last automatic flameout, can no longer start, remove the diesel high-pressure pump on the road, the fuel injector debugging, the engine still can not start. Troubleshooting After the car was put on a test run, the starter worked well, the exhaust pipe of the engine did not smoke, and the engine fault light on the dashboard was abnormally lit. Press the diesel pump, exhaust the air in the oil circuit, release the high pressure oil pipe on the injector, start