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一、故障现象本车搭载的是1.8T缸内直喷EA888发动机,冷车启动时连续启动好几次时车辆才能正常启动。启动后热车怠速高,冒黑烟。二、故障诊断过程(一)根据车主的描述,首先把车完全放到冷态状态下启动车辆时,把钥匙拧到启动档保持4S后起动机空转,发动机没有启动,来回重复了2次,第三次时发动机启动,启动后等发动机暖机后怠速高,排气管冒黑烟,确定故障现象存在后,熄火把钥匙门打到II档,连接诊断设备VAS6150读取发动机控制单元J623是否有故障
First, the fault phenomenon This car is equipped with a 1.8T engine direct injection EA888 engine, cold start several times when the vehicle starts the vehicle can start normally. After starting the hot car idle speed, black smoke. Second, the fault diagnosis process (a) According to the owner’s description, first of all, the car completely into the cold state when starting the vehicle, the key screwed to the start gear to maintain 4S idle after the starter, the engine did not start, back and forth repeated 2 times, The third time the engine starts, after starting the engine idling high warm, exhaust black smoke, determine the existence of symptoms, turn off the key to hit the second file, connect the diagnostic equipment VAS6150 read the engine control unit J623 whether failure