I have a 6.0L powerstroke in my shop right now that will not start when hot. ICP goes to 380 psi right away on cranking. I have just replaced the hpop and IPR. There are no leaks in the hpo system. I have air checked it. It's a 2003. The only thing I am finding is that I have zero oil pressure cranking the engine after the oil temp goes above 200 degrees. I took out the oil filter to see if the oil filter reservoir would fill while the engine was cranking and it does fill. Just having trouble figuring out why I can't get any oil pressure. Thanks for any help guys.