故障现象 一辆桑塔纳轿车运行约7万km左右,停车后再启动发动机无怠速。调节怠速调节螺钉不起作用,只有在1000r/min时,发动机才可稳定运转。 据了解,故障发生前,该车车况良好无异常现象。故障发生后,因怀疑脏物堵塞,清洗过化油器。此后发动机工作时,转速一低便熄火,调整怠速也无效。 Symptom A Santana sedan about 70,000 km or so, stop and then start the engine without idling. Adjust the idle speed adjustment screw does not work, only at 1000r / min, the engine can be stable operation. It is understood that before the failure occurred, the car was in good condition with no abnormalities. After the fault occurred, because of suspected dirt clogging, cleaning the carburetor. After the engine work, the speed will be a flame out, adjust the idle speed is invalid.