2005 ford f-250 diesel 6.0
 

Well after changing my fuel filters,glow plugs and now it's the high pressure oil pump that's the problem anyone know how much a pump goes for or can u just change the gaskets??? And how hard is that ??? Any and all advice/knowledge would be appreciated f Hz again...

HPOP is in the lifter valley directly under the turbo. First have you checked Injection Pressure Regulator? Its a pain to get to but it's on the back of the motor behind the turbo. I would try that before ripping everything else apart. Sometimes you get lucky and all it is, is that. If you end up needing the HPOP, you would end changing the IPR anyway because it is right there anyhow when you pull it apart.