一辆帕萨特B5轿车,据驾驶人反映:最近发动机抖动,越来越严重,该车在某修理厂修理过一次,更换了第2缸的点火线圈和火花塞,但故障未排除。用V.A.S5051B对发动机进行诊断,没有查出任何故障。从发动机抖动,异响和排气管冒烟现象判断,发动机个别气缸工作不良。检查中发现,原修理厂没有使用原厂点火线圈,换上原厂点火线圈后故障仍未排 A Passat B5 sedan, according to the driver reflected: the recent engine jitter, more and more serious, the car repaired in a repair shop once, replaced the second cylinder ignition coil and spark plugs, but the fault is not ruled out. The V.A.S5051B was used to diagnose the engine and no fault was detected. From the engine jitter, abnormal sound and exhaust pipe to determine the phenomenon of smoke, the engine cylinder work poor. Inspection found that the original repair shop did not use the original ignition coil, replace the original ignition coil fault is still not row