Have you tried turning the engine with the injectors removed? If it still won't turn, I would think you have a build problem. Perhaps wrong bearing shells if it is locked tight, or possibly excess oil (or some water) in the cylinders causing "hydraulicing".
Mr. Toad
September 2011
Automatic Answer
We may have found other answers which could help you.
howtomendit.com for free repair help, information and advice.
