车型:配置3.6L发动机。行驶里程:210000km。故障现象:发动机热车后偶发性怠速游动,排气管冒黑烟,启动困难。故障诊断:此车为二手车,第一任车主在其他修理厂修理多次,花费七八千元,换了很多配件,包括空气流量传感器、活性炭罐、燃油箱压力调节泵和炭罐电磁阀等,都没有能排除故障。这辆车在卖给第二任车主时,车主再次花4000多元维修,结果仍旧未 Model: Configuration 3.6L engine. Mileage: 210000km. Symptom: Sporadic idle idling engine hot car after the exhaust pipe black smoke start difficult. Troubleshooting: The car is a used car, the first owner repaired several times in other repair shops, spent seven or eight thousand dollars, for a lot of accessories, including air flow sensors, activated carbon canister, fuel tank pressure regulating pump and canister solenoid valve Etc., can not rule out the problem. The car sold to the second owner, the owner again spent more than 4000 yuan maintenance, the result is still not