故障现象一辆2013年产迈腾B7L1.8车,累计行驶里程为1.4万km,行驶时急加速不良,仪表EPC灯异常点亮。故障诊断与排除接车后试车,确认故障现象属实。利用VAS5052A读取发动机控制单元的故障代码,故障代码为P0087(图1)。清除故障代码后急加速行驶一段路程后,故障代码再现。根据读取的故障代码分析,造成该故障的可能原因有:低压燃油管路故障、燃油泵及燃油泵滤清器故障、燃油泵 Fault phenomenon A 2013 production of MAGOTAN B7L1.8 car, the cumulative mileage of 1.4 million km, driving a bad acceleration, EPC lamp abnormal light. Fault diagnosis and troubleshooting After the test car to confirm the fault phenomenon is true. Using the VAS5052A read the engine control unit fault code, fault code P0087 (Figure 1). After clearing the fault code, after expediting for some distance, the fault code will be reproduced. According to read the fault code analysis, the possible causes of the failure are: low-pressure fuel line failure, the fuel pump and fuel pump filter failure, the fuel pump