then save the diesel - if you can't turn the engine by hand from the front pulley w/ plugs removed as said above, then you've most likely got rust stuck pistons - if filling the cylinders w/ diesel and soaking for a couple days doesn't do it, you'll be needin to pull the head for more lively persuasion, which may or may not result in need for major engine work - if the diesel doesn't do it, might be time to look for a running used engine
Bill