A fully rebuilt 1500 + 40thou, first started up a few days ago now and run for 20 - 25 mins at 2200 - 3200ish with varying revs, and everything was fine. I drained the coolant and retorqued the head.  I then took it out for its first drive and everything was okay, although there was some oil smoke which I assumed would reduce as the miles increased. Fast forward to today and the smoke was much worse, with some white smoke too, and rough lumpy running with only 13 miles on the clock .  No 1 plug