Put a fuel pressure tester on my 89 f150 and nothing so I put a new in-line pump on. And no start. Haven't put the tester back on yet. It will fire up if I spray starting fluid until the fluid is used up. Not building up pressure, I have removed the line without bleeding the pressure off because there is no pressure. How about the pressure regulator could that be the problem?

 

Dough that the FPR is the problem.
Unplug the electrical from the HP pump and then unhook the supply line to it.
Turn on the key about two times and see if any fuel comes out of the fuel line coming from the selector valve.
Let us know what you find at that point.

 

As soon as I unhooked the supply line to the hp pump, gas continuously runs out like a siphoning action, and this is without turning on the key. About a gallon ran out before I pinched off the line.
Don't know about the selector valve seeing as how the rear tank lines are not connected, I was told because of the rust in that tank. And don't know location.
Just bought this truck and it looks like 100 people have "worked" on it. Wires going nowhere, wires cut off, only to used as a farm truck never to see the pavement again.

 

Listen close to find out if the in-tank pump is running when the key is first turned "on". If not, electrical problem or dead pump. Rail-mount pump if running, will not suck fuel all the way up through in-tank pump, fuel line to rail-mount, or even if it does, pressure will be very low.

Check appropriate fuse. Check inertia switch for being "tripped" Swap out fuel pump relay. If no cause yet found, check for voltage between check point and ground at: inertia switch, both terminals, should have 12V when key turned on. Then, at + pump connection at tank connector. If 12V yes there, pump ought to run, but the possdibility still exists of a "no ground" connection somewhere between battery and pump. Before looking for a ground problem, I would get 2 lengths of hook-up wire, 2 different colors, connect one end of each to battery + and -, be careful, don't touch wires together! Remove harness connector from tank, be sure of which connection is pump +. Touch - wire to shiny ground surface of tank, and + wire to correct tank top terminal, pump +, if pump is good, it will run, you can check for fuel pressure at check-point while doing this, with a helper. If you mistakenly connect your + wire to the gauge sending unit in the tank, you might fry it. If which wire color in harness at tank for pump is unknown, seek a wiring diagram. Past experience, but not always, ford has used PINK for the pump + connection. impish

 

Ok with every thing hooked back up the HP pump (in-line pump) run for one second each time you turn on the key?
If not have you tried resetting the fuel shutoff switch?
Is the small black wire with a green stripe still hooked to the NEG post of the battery?

With the prime getting to the HP the truck should run fine even if the in-tank pump does not run.

 

Sounds like both pumps run as long as key is on, not turning off in a couple of seconds. Wire to neg post are one to ground, one to starter relay bracket on fender, one blk/grn & blk/wht to plug that disappears towards radiator.

 

Sounds like a bad computer or the fuel pump relay is stuck closed.
My guess is a bad computer.

 

Are you talking eec? And is that located behind the drivers side kick panel?

 

By the way did you change the fuel filter when you did the pump?

 

Yes the EEC computer.
Make sure you have fuel pressure at the fuel rail with the pumps running as someone may have rewired the power to the fuel pumps to come on with the key. If that is the case your EEC computer may be OK.

 

It seems someone has messed with the ignition seeing as how the key doesn't come out, the steering column won't move and there is a starter button. That's right a button. I turned the key on, checking on the pressure gauge and it reads nothing. Pumps were running. I drove this truck a couple of weeks ago, but had to use starting fluid to start it. And would continue to start if it only sat for a short time but in a couple of hours it would require starting fluid. It would seem to a layman like me that with the pump running it should continue to build pressure.

 

Yes if their is fuel to the HP pump and the fuel filter is OK you will build pressure against a head. If no head then no pressure. The head in this case is made up of the FPR and the fuel injectors. It is also possible the you are not getting the hose of the pressure gauge on good so if that is the case you will get no reading on the gauge.
If the FPR is stuck open you will also get no reading so if you have the fuel tank selector valve still on the truck remove the fuel line coming from the engine and turn on the pumps and see if you get fuel out of the return fuel line.