I have searched this topic and came up with nothing, I just got done putting new o rings in my IP because it was leaking diesel fuel after I put it all back together on the first test drive, the truck knocked very badly and puffed white smoke, after Drove it a few miles the white smoke went away, and now it only knocks on and off at a certain RPM speed and pours black smoke, even when the knock goes away still puffs black smoke, Im assuming the white smoke on first test drive could be the engine lube burning off something along those lines.. anyone hurd of this? ps. truck has drivetrain from a m1028 with 28,000 miles on it