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故障现象一辆行驶里程约为1万km的骐达自动挡轿车(2012年6月购买的车),车主反映在行车时发动机故障灯点亮,行驶一段路后发动机故障灯会熄灭,属偶发性故障。故障诊断接车后询问车主车辆的故障情况,车主描述说,早上车辆在加满油后行驶至单位途中,发动机故障灯亮起,在一段路程之后发动机故障灯却自动熄灭。笔者用日产专用故障检测仪读取到的故障代码为P0300,含义为多缸失火,且为间歇性失火,该故障代码可以清除。导致出现该故障代码的原因较多,主要有:点火线圈故障;火花塞间隙过大或烧蚀严重;气缸压力过小;喷油器工作不良,雾化效果差或燃油品质有问题;相关线束连接状况不佳及混合气过稀等。
Trouble phenomenon A mileage of about 1000 km of the Tiida automatic sedans (June 2012 purchase of the car), the owner is reflected in the driving engine fault light is lit, after a period of road engine fault light will go out, is a sporadic fault . Fault diagnosis After the car asked the owner of the vehicle failure, the owner said that in the morning the vehicle was filled with oil traveling to the unit on the way, the engine fault light is on, after some distance the engine fault light is automatically extinguished. The fault code read by Nissan Special Fault Detector is P0300, meaning multi-cylinder fire, and intermittent fire, the fault code can be cleared. Lead to the fault code for many reasons, there are: ignition coil failure; spark plug gap is too large or serious ablation; cylinder pressure is too small; injector bad work, poor atomization or fuel quality problems; related wiring harness connection Poor condition and the mixture is too thin and so on.