Mystery Black Powder Film [Archive] - Toyota MR2 Message Board

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Hi, I have been having a blast driving my new (to me) 91 MR2 and the only persistent irritation is the fine black soot that builds up very quickly from the rear wheels on back, including the entire rear bumper up to the tail lights. I am having to use a California Car Duster to clean it up daily. I was thinking the car was just running rich, but I have had my sons follow me quite a few times, and they noted no smoke of any sort, even under hard acceleration or on cold morning start ups,