What causes a 95 ford contour to blow black and blue smoke that alternates along with black soot to come from the tailpipe when you first start the car or when the RPM hand reaches three thousand?

Who is Black Hand?  94 mecury throwing black smoke?  Black smoke once from a perol car?  Sputtering and black smoke at start?  Black smoke and moisture on start up?  Why wont the car go over 3 thousand rpm?  What cause black soot in your 92 honda civic?  1990 cadillac is smoking black and blue smoke?  What causes black soot to come out of tailpipe?  What causes your engine to blow black smoke out?  Could a turbo on apetrol car course black smoke?  1996 Contour blowing black smoke and shuting out?  What cause blue smoke from a exhausts at high rpm?  Were does black smoke come from on a diesel truck?  Why is muffler leak causing black soot 1995 honda?  What causes black smoke to come out of car tailpipe?  What causes 1993 ford f-150 to blow black soot from the exhuast?  Whats causes 93 ford van with 5.0 to load up and blow black smoke?  Will a oxygen cause a trurck or car to put off black or blue smoke?  How do you fix your car when black smoke and soot comes out of your muffler?