BamaSixGun
SDD Super Mod/Staff
Sounds like either a cut injector o-ring (cut when the injector was installed 2,000 miles ago) or, an injector stuck wide open.
Either one would drain the fuel rails down, causing hard to start till the air all was purged out. The black smoke would be from a cylinder full of fuel.
Did you mean that it was also hard to turn over on start? If so, it could be from all the fuel in the cylinder (fuel does not compress).
I'd sniff the oil, and also check for over full, if the fuel leak was that bad, you'd notice the fuel smell in the oil...
Just reported in the post above yours, I do smell diesel in the oil.
How high were you running the fuel pressure (or did you have a gauge installed on the regulator)? Pressure was set at the dealership to around 55psi. fuel pressure gauge in cab and on the regulator will be installed before long.
Hope you get it figured out soon, keep us posted...
Also, it seems like the fuel mileage has gone to crap the last few days (according to the lie-O-meter) if that means anything.