Cummins rough idle
 

I have a 99 dodge cummins. I was told it has 200 hp injectors not sure but it smokes like hell.
When the truck idles it sounds like it has a dead miss. Is it possible that's it's getting to much fuel? Also when drive when the throttle is at a steady speed the truck jumps back and forth. I replaced the TPS but still acts the same. Any help will be appreciated:argh: