My Titan wont start up?

It looks like there is no pressure I think the pump is bad because I can hear it screaming back there can you show me how to get it out?

I have fuel to the rails and pulled all injectors, cleaned and tested them.
Not sure about the fuel pressure yet, that's next on the list. Also, with truck if ignition on, three of the four O2 sensors read 0.31 volts, and the fourth is 0.61 volts! Is that mean that one sensor is bad?

I haven't tried that yet, but I will. I think I'm getting plenty of fuel because I can smell it after trying to crank them truck a few times.

I have not tried that yet, but when I crank it, it tries to start. But it sounds like it's starving for air. I went over the intake box and MAS/IAT today, as well as wiring and everything checked out. When I turn the key a few times I can smell fuel that's not being burn, was thinking maybe tomorrow morning checking all the coil packs and plugs by grounding plugs to the block one at a time to ensure spark. I also replaced the cam and the crankshaft position sensors because it kind of sounds like the motor is spinning a little too fast. So, starting fluid in throttle body and check fire again. May have found a few more plugs dumping all that fuel on them. Still no start and only code is P0113.