running rich?

i just got my car on the road and noticed its smokey. people say they see blue but ive only seen black. i check the codes and it blinked once.. then 16 times..which says it fuel injectors in the book. does any one know what would cause this and how i can fix it,?? any help would be good, thanks

more info on what engine you are running....and pull each injector while its running and see if its making a change in idle....also 1 is o2 so I get anew o2 from kragens for 20 bucks which has liek a 2 year warranty....cause you might have a fuel injector stuck open causing the code

thanks all try that,and its a d16a6 and i put a new o2 in last night and not much off a difernce.

ok well check your ignition make sure its all right...something causing unburned fuel....but I figured might be a leaky injector stuck wide open sense you getting that code...