I recently bought a bone stock 2002 lb7 with 200k. Shortly after my purchase it felt low on power and started smoking at an idle so naturally I assumed injectors and found a set of Bosch remans and swapped them. I didn't buy new pressure lines and just used compressed air and solvent to clean them. I put it back together and started out in the road and it had a bad knock. The next day it smoked white at an idle and the knock was worse I took it to a friend who had a scan tool and we found #7 was out of range. This time I got diesel in the oil. I was able to get another injector on warranty. When I disassembled to get the injector I found crud blocking the inlet. I put the new one in and started down the road and there is still a slight knock I'm low on midrange power but no smoke and no diesel in the oil. The also is significantly more blow by than before the initial tear down. I've looked at a bunch of forums and can't quite find one that matches my problems. Any help would be appreciated. U really don't want to pull the valve cover again