ok heres the deal my car is pulling 2 codes....."fuel trim malfuntion" an "System too lean" but on my fuel/air ratio guage its reading rich..... i pulled my sparkplugs that i just put in there last week an they were all fouled out.... when u rev the car up high a lil bit of balck smoke comes out... does this sound like my car is running rich or lean? an how could i fixed this problem.....

also this is the d16y7 i took the z6 head off so the head sat up in a garage for a few months....

 

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