实例一故障现象:一辆新大洲XDZ125四冲程摩托车熏行驶十几公里发动机就熄火。半时左右再启动,发动机又可以启动,但时间不长又熄火。故障分析与排除:从表面现象看属于油路问题,好像油开关阻塞供油不足及化油器有故障。但实际上故障在点火路。因为发动机熄火后等上半小时才能再启 Example A breakdown phenomenon: a new continent XDZ125 four-stroke motorcycle smoked a dozen kilometers of engine to turn off. Half-time or so start, the engine can start, but not long and turn off. Failure Analysis and Troubleshooting: From the surface phenomenon is the oil problems, as if the oil switch obstruction of insufficient fuel and carburetor fault. But in fact the fault in the ignition circuit. Because the engine is turned off half an hour later to reopen