一台解放CA141型汽车,在行驶途中发现发动机动力下降,排气管发出有节奏的突突声,驾驶员判断是少数气缸不工作。经分别对各缸断火检查,确认为是第四缸不工作,且该缸分线不跳火。导致分线不跳火的原因一般常见的有三个:分线漏电或断路;分电器盖旁插孔漏电;凸轮磨损不均。然而几经检查这三个部件都没发现有故障。又对分火头,点火线圈 A liberation of CA141-type cars, found in the driving range of engine power decreased, the exhaust pipe issued a rhythmic bursts of sound, the driver judged that a few cylinders do not work. After the respective cylinder off fire inspection, confirmed that the fourth cylinder is not working, and the cylinder line does not jump fire. Lead to sub-line does not cause the flashover are generally common in three: sub-line leakage or open circuit; distributor socket leakage near the cover; uneven cam wear. However, after checking these three components did not find fault. On the fire again, ignition coil