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I have a 2006 6.0. It has stage 2 turbo, intercooler, 150cc injectors, blue spring kit, new hpop, replaced ficm, glow plug module, studded and deleted. Cranks but no start. Today I changed the oil/fuel filter housing and saw one of the injector fuel lines running to the passenger side head was kinked. Last few day I have had plenty of icp but today wouldnt build higher than 350 psi. Only codes that are coming up are glow plug 2,4,8 open circuit and the p0100 code. Would the fuel line be causing my headache? All the ficm reading are in range battery brand new. I'm lost someone please help.
You said batteries are new, did by chance you blow a fuse installing them? I’d also put the charger on them since you’re obviously cranking it to get it started? On the 7.3L there’s a few things that will absolutely result in a no start. I can’t believe the same is not true for the 6.0l...check them first.
You need over 500 PSI on the ICP sensor to fire. Unplug the ICP sensor and try again, it could be just a bad sensor. If that doesn't help you need to start checking the HPOP system to determine if you have a leak, could be stand pipes, dummy plugs or the STC fitting may have blown apart if it hasn't been updated, an air test is likely in you future, or although rare is your high pressure pump actually bad.
The kinked fuel line is not good but is most likely not your problem.