I got a 2005 dodge Ram 2500 4x4 6 speed with 100,000 miles on it. Im new to owning a common rail and dont know to much about them. One thing that is concerning me is that my truck will smoke a little when i get on it, smoke is grayish black not alot. Truck is all stock except for being straight piped. I was told that the smoke is normal from a few people and others told me it could be a weak cp3? Truck runs great sounds great. Like i said im not real familar with these engines please inform with all the pros and cons to the cp3 or any other issues that i may need to keep a look out for. Thanks alot i appreciate it.