166k miles, auto, 4x4, limited edition, new fuel pump plugs, wires, coil pack, egr, maf etc. Went to leave work and it didnt want to fire, cranks great but no go. After about 6 attepmts it fired and ran great for my 45 min ride home after work. Same thing this morning but drove the car instead. ANy ideas??

166k miles, auto, 4x4, limited edition, new fuel pump plugs, wires, coil pack, egr, maf etc. Went to leave work and it didnt want to fire, cranks great but no go. After about 6 attepmts it fired and ran great for my 45 min ride home after work. Same thing this morning but drove the car instead. ANy ideas??
its either not getting spark or fuel find out which and we can narrow it down from there

Problem solved. I did check for spark which was good, checked fuel pressure before the regulator and no flow. Changed the fuel pump relay in the power distribution box and it fired up right away. I did notivce substantial corrosion on the terminal blades. so I did a cleanout of the lower part of the PD box and all is well.