故障现象一辆2007年产宝马323i轿车(采用E90底盘),累计行驶了约3万km。用户反映该车在外更换过燃油滤清器(附燃油调节阀)后,出现怠速抖动,行驶发冲的故障,而且车内有很重的汽油味。故障诊断了解得知,该车曾出现过后部的活性炭罐处有汽油滴出的现象,为此就更换了活性炭罐,但故障还是无法解决。笔者在诊断该故障时并没有像诊断其他车故障 Trouble phenomenon A 2007 BMW 2003i sedan (with E90 chassis), a total of about 30,000 km. Users reflect the car outside the replacement of the fuel filter (with fuel control valve), there idling jitter, driving hair red fault, and the car has a heavy smell of gasoline. Troubleshooting Know that the car had appeared after the Department of activated carbon canister drip at the phenomenon of gas to replace the activated carbon canister, but the fault still can not be resolved. The author did not diagnose other car faults when diagnosing the fault