故障现象一辆2007款的欧宝威达轿车(配备2.2 LZ22SE发动机),累计行驶约7万km,出现发动机怠速抖动,加速无力的故障现象。故障诊断首先连接故障检测仪读取故障代码,调得的故障代码为P0302——气缸2失火检测(存在)。清除故障代码后试车,发动机故障依旧,且发动机故障灯很快就开始闪亮,调取故障代码,还是P0302,说明2缸不工作的情况是始终存在的。拆下火花塞检查,发现燃烧得不好,需要更换。根据维修的经验,欧宝车点火线圈比较容易损坏,4个缸的点火 Symptoms A 2007 Opel ICP Sedan (equipped with 2.2 LZ22SE engine), a total of about 70,000 km, the engine idling jitter, weak acceleration phenomenon. Fault diagnosis First connect the fault detector to read the fault code, tune the fault code is P0302 - cylinder 2 fire detection (existence). Clear the fault code after the test, the engine fault remains the same, and the engine fault light quickly began to flash, call the fault code, or P0302, indicating 2 cylinder does not work is always there. Remove the spark plug inspection and found that the combustion is not good, you need to be replaced. According to the maintenance experience, Opel car ignition coil is relatively easy to damage, 4 cylinder ignition