it is highly possible that the cat should be replaced.

来源: 润涛阎 于 2015-02-12 18:42:29 [] [博客] [旧帖] [给我悄悄话] 阅读数 : (66 bytes)
回答: 内容在此， 还是P0420毛病 由 飞蝉 于 2015-02-12 08:01:04

you need to check the spark plugs first to make sure they are ok.

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