All right guys and gals here is whats going on. I just rebuilt my 3.3 V6 01' Xterra 2WD. Removed the engine redid everything new heads water pump all of it. Put it back in and it throws the timing belt. Replaced it and the starter. and again timing was off so Finally figured it out that the tensioner was on wrong. fixed it and it ran beautifully for 10 mins straight then rough idled and I stopped it so I didn't destroy almost a year of hard work. I can not get it to crank now and it sounds like it wants too but I do not want to break anything important. (Cams and Crankshafts are expensive)So any help would be appreciated!!!!