It should be on the frame, under the drivers side cab.
The above answer is inaccurate and refers to the location of the fuel filter.
The fuel pump is electronic and is located inside the fuel tank(s).
It is accessable through a round plate/cover located on top of the fuel tank.
The 1986 ford f150 has two fuel pumps. There is one pump mounted inside of each fuel tank.
1997 ford f150 fuel pressure specs
Remove fuel tank
In the gas tank
With a fuel pressure gauge connected to the fuel rail.
Mounted on top and inside the fuel tank.
inside that tank, its atached to the fuel pump assembly
What is it doing
in the gas tank
92 f150 fuel shut off switch located
Most likely in the fuel tank
The fuel pump is inside the fuel tank.