Ok I got the once in a while hard start let off the key for a sec and it will fire right off or keep with it and it will spit a little and fire both with a cloud of black and blue smoke. Is this a sign of injector(s)? How do I test injectors? I have found some remans pretty cheep I can not do the hole set but a couple at time mabey over I can get them all but I need to find the bad ones first. Next I have another truck that I am working on it has 2 bad injectors. They only want new injectors but I heard that the new stainless bodies will not work with his nozels. Is this the case? It is an 2003 Thanks for reading.