Help, I'm now at a lost. I have 2006 6.0 that will not start. I have a ScanGauge and it at first showed 6 to 8 psi on the Hpop. I'll replace it and it now shows between 1200 to 1600 psi. no leaks. I ICP shows .24 and when cranking its goes to 1.54, the fuel pressure shows 59 psi. the FICM shows 47.5 to 48 volt with 1 sync. Did a injector buzz test show good with a Gessins scan/code. The injector all buzz when the key is first turn on. So now I replace the Hpop, the IPR, the IPC sensor, and the FICM. Everything show good but it will not start. there is black smoke coming out of the exhaust when trying. Its tries to kick but won't get going.