NO START/NEW ICP and IPR valve

i got a 2000 f250 superduty, 4 inch lift, 50 hp injectors, bd trans and trans cooler, 4 inch straight pipe from the turbo back, new starter, new glow plugs, new GPR relay all within a year not even 10000 miles on the truck since. Oil level is good and just put new oil and filter on the oil reservoir fills up while but oil sits half full in the reservior before you began to crank, the oil pressure dummy gauge in the truck doesnt move while cranking the odd time it might bounce if youre lucky. the truck had been starting hard for a few weeks but it had been colder so i didnt pay much attention the last few times the truck started the dummy gauge would jump around with every crank, the odd time at 60mph it would surge and not want to accelerate past 60mph.

to start the truck ive tried
spray
pumping pedal while cranking
icp disconnection while cranking

do i try a new HPOP? or look towards a fuel problem?

any tips to get fuel bowl cover off? mine wont budge
please help