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两年前,我单位新进了一辆松花江微型面包车,转向、制动及其它操作都比较灵活,乘坐也比较舒适。可是刚行驶了2000km,出现怠速不稳,且排气管有轻微的汽油味。检查电路没有发现不正常现象,油路也未发现故障,但所有火花塞都有黑色的积碳。我判断故障肯定在化油器,于是调整节气门、怠速调整阀,效果都不理想。切断化油器电磁阀,发动机马上熄火,证明怠速油道及电磁阀都工作正常。后来认为可能是主量孔扩大所致,拆下化油器,更换较细的主量孔后,加速性能不好,有轻微的一冲一冲现象。又一次打开化油器,更换原主量孔,故
Two years ago, my unit entered a miniature minivan Songhuajiang, steering, braking and other operations are more flexible, more comfortable ride. But just driving 2000km, idle instability, and the exhaust pipe has a slight smell of gasoline. Check the circuit did not find abnormal phenomenon, the oil has not found fault, but all spark plugs have black carbon deposition. I determine the fault must be in the carburetor, so adjust the throttle, idle speed adjustment valve, the effect is not satisfactory. Cut off the carburetor solenoid valve, the engine immediately turn off, prove that the idle speed oil and solenoid valves are working properly. Later thought that the main hole may be due to expand, remove the carburetor, the replacement of the smaller main hole, the acceleration is not good, there is a slight red-washed phenomenon. Once again open the carburetor, replace the original hole, so