故障现象 车辆在行驶中开始一切正常,途中感觉发动机沉闷无力,排气管放炮。当急加油门更甚,化油器还有回火现象,坚持行驶一段路程后情况更加明显,发出类似拖拉机行驶中的响声,发动机明显无力。 故障排除 开始判断点火过迟,经检查点火时间正常,其它 Symptoms Vehicles in motion all normal, the way the engine feeling boring, exhaust pipe blasting. When the accelerator was even worse, the carburetor also had a tempering phenomenon. After insisting on driving for some distance, the situation was even more conspicuous. A similar noise was heard from the tractor and the engine was obviously weak. Troubleshooting Start to judge ignition is too late, check the ignition time is normal, other