1987 F150 Fuel Problem
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1987 F150 Fuel Problem
I had no fuel pressure to the fuel rail on my truck(302). I replaced the high pressure pump because it was dead(had voltage to it,but wouldnt run) and filter. It started right away (about 35 psi) and all was happy in Ford land :<). However, it idled for about five minites and then died.No fuel pressure :<( .There is no fuel from the HP pump output. I can hear the low pressure pumps run(dual tanks),so I disconnected the inlet at the HP pump to check for fuel there. It is dry.Shouldn't the in tank pumps push fuel to the HP pump inlet? Does the fuel tank selector go bad? Is it servicable? This truck has 94,000 miles on it but it has sat unused and started seldom over the last three years. Thanks Cal
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From: Ocean Park WA
Unfortunately this is not true It will run BUT you will start having a real serious fuel starvation problem (happened to me more than once). The older system must have the low pressure lift pump to feed the high pressuure pump or you will have the same problem the old mechanicals had with starting dry, it will work but it's hard as hell on the pump and will burn it out.
Fleet Mechanic
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From: va
Originally Posted by Egor
This sounds like an easy fix, but I'm no expert so I'm bumping you to the the top of the list. Relay or a High pressure pump would be my GUESS.
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Fleet Mechanic
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From: va
Theres a fuel shut off switch under the dash drivers side dash above the clutch pedal. 2" Black box with a white button on top, see if its pressed down. You can bypass it if you thinks its bad, replace it ifs its bad.
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Fleet Mechanic
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From: va
Call around at ford dealers you may find one for about 64.00 net price. I dont think you can find an aftermartet "direct find one". You need one without a wire connecting. which is called a mechanical six port fuel selector valve.
Fleet Mechanic
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From: va
Originally Posted by EPNCSU2006
The '87 is like all other EFI vehicles, it has a fuse (fusible link) and a relay, both under the hood.
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