I'm looking at a 1997 New Holland lx565 skid loader 5700 hours on it. When running the engine smokes, over heats and has a miss. I have a lot of experience with gas engines but limited on diesel knowledge. I have an idea on what the problem may be, which is a head issue either gasket or the head in general is done for but i'm not positive and curious if anyone had some insight into this matter. I have no problem getting it and fixing it so long as the entire engine is not ruined and the parts wont cost an arm and a leg. Thanks for any help.