有一朋友买了一台石拖 150型拖拉机 ,用了不到一年 ,出现了冷车启动容易热车难的现象。朋友找到笔者 ,经仔细检查 ,发现机器温度较高 ,但并没有超负荷作业 ,冷却系统水垢也不多 ,最后检查供油提前角 ,发现供油时间过迟 ,这就使气缸里燃油和空气形成的混合气不能在活塞上止点附? A friend bought a Stone Tractor 150 tractor, with less than a year, there has been a hot car easy to start the cold car difficult phenomenon. Friends found the author, after careful examination and found that the machine temperature is high, but there is no overload operation, the scale of the cooling system is not much, and finally check the fuel supply advance angle and found that the fuel supply time is too late, which makes the cylinder fuel and air The formation of the mixture can not be attached to the piston dead center?