need some input before all my hair is gone

[atstew42]

1997 powerstroke is extremely hard to start even at 50 degrees . Gpr is working. Replaced glow plugs,valve cover gaskets and uvch, icp sensor, cleaned ipr,new cps new fuel filter. Will crank but dies after 2-4 sec. It is not throwing any codes. Please some good info. I cant keep throwing money at this truck. Very frustrated __________________ 1997 f250hd xtra cab 4wd lb. Psd. Ccv mod,