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车型:宝马740Li,发动机排量3.0L,缸内喷射发动机。故障现象:发动机热车怠速状态下轻微抖动。故障诊断:读取故障码,有2缸缺火的故障码。检测喷油器电阻为200~210kΩ,查阅资料得知,此电阻在正常范围内。怠速时可以从数据流中看到,工作稳定性菜单,此菜单中显示2缸有些异常,其他5个缸都为-1左右,而2缸为正2~3之间跳跃。
Model: BMW 740Li, engine displacement 3.0L, cylinder injection engine. Symptom: The engine hot car slight jitter at idle state. Fault diagnosis: read the fault code, there is a lack of 2-cylinder fault code. Detection of injector resistance 200 ~ 210kΩ, access to information that the resistance within the normal range. Idle speed can be seen from the data stream, the working stability of the menu, this menu shows some exceptions 2 cylinder, the other 5 are about -1 cylinder, while the 2 cylinder is between 2 to 3 jump.