[Nissan4Life]

How many miles on the truck, assume original fuel pump. You can plumb a fuel pressure gauge inline. I then ran it up the cowling at the back of the hood and taped it to the windsheild. Drove around with it so that I can monitor my pressure are various rpms, speed and load. THis will tell you if the pump it working.

I replaced a sender on the fuel pump once on my hardbody. Have to pull the pump all the way out. Flipping the bed seemed daunting at first but is is actually pretty easy. Dropping the tank isn't that bad either. THe 4 bolts are easy, it is the hoses that are the pain.

 

[Nissan4Life]

The bed tilt method.
You should check vacuum hoses for leaks.
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NEver even thought of that. When I did my bed tilt I went to the side. I was tracking all kinds of issues and had the bed tilted at least 3 times. Got to be pretty good at it. I recall being able to get it up in 5 min or so.

 

[Nissan4Life]

Do you have to take off the back bumper?

Nope.
PCV is in the engine bay