1999 nisan sentra gxe ii have a lot of unburnt fuel coming out the tail pipe.fuses were blown during a jump where should i be looking to fix the problem.?

1999 nisan sentra gxe ii have a lot of unburnt fuel coming out the tail pipe.fuses were blown during a jump where should i be looking to fix the problem.?
Thats could be one of two things;your engine is running rich or moisture vapours from a fairly new engine, which is perfectly normally.My advice is to have a licenced technician have a look at it.4mgk5