HELP UPDATED INFO BLUE SMOKING

[300ZXttZMAN]

OK i have a 90' 300zx tt 5spd i bought it a little over a week ago its got 107k original miles stock tt motor stock tt chassis (it came from dealer as a tt)

when i went to get it i drove it around the dealer for about 10 miles turbos spool up nicely i bought it from (it was a trade in not a rebuild) (a well developed dealer also) transmission shifted good just idled high and kinda un steady... plus emmison smelling visible smoke.

SO ANYWAY i get it home checked all the coils they looked good no burn checked to make sure they were all fireing started pulling coil wires number 2 cylinder was not. when i pulled the coil wire nothing happened no change so i replaced all plugs and its running good

BUT the problem is there is alot of smoke out of both pipes does anyone have any suggestions or have ever experienced this PLZ HELP ME