I just replaced my electric fuel pump and the single function fuel / filter reservoir located on left rail under the truck. The fuel rservoir had fuel in the line, but the truck still want crank. The truck is a 1985 Ford F-150 with a 302, 5.0L EFI.
If I mistakenly reversed the electrical leads (Red & Black) to the fuel pump would the pump operate ?
I traced the fuel line from the Electric Fuel pump to the high rise intake to see if there was another fuel filter, I can not see behind the intake. The intake is so high you cant see where the fuel line connections.
Need help !!!, I been working with this truck for 2 weeks now and have no luck so far.
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Hi. Your inline fuel filter is a molded plastic mesh type, designed to protect the electrical fuel boost pump from contamination. It is located on the left hand side frame rail about 2 feet away from the rear of the fuel boost pump.
No ,I haven't Fixed my problem, I'm still awaiting solutions and feed back from helpful people that may have went thru the same problem. My Wife is out of work so it's a little tough on me right now. I want to correct the problem myself.
i actually have a 1985 302 efi... there are 2 pumps one one the rail right under drivers door and one in the tank.. there are also two filters... one just behind the pump one the rail.. its actually inside a canister that you open with a oil filter wrench then it has a paper element inside..then there is a inline filter that is actually part of the high pressure line the hose is about 3 feet long and runs from your front pump up to the fuel rail agaist the firewall...this one is really hard to find (Buy) good luck wish i hade a carb
Same problem with my 85 F-150 5.0 EFI---turned out that the fuel pump relay under the hood was teriffically corroded on the inside (I opened up the relay to look inside). When I checked the voltage at the fuel pump it would show 3.5-6 volts instead of 12 volts.
I was thinking fuel blockage or perhaps failure of the in-tank pumps. Sometimes the truck would start and run, othertimes it would neither start nor run. Typically, if running it would stay running until turned off (where the relay had to break).
Changing the green fuel pump relay fixed the problem--12 volts now at the pump and no reoccurance.
Fuel pump is located under the driver door frame inside rail and the filter is in front of it 12" or so, it is a large metal canister type.. The switching valve is located just behind the cab/drivers side on the inside frame rail. I am sure there is a story behind this, like no fuel or something and knowing the rest of the problem would help us help you and dad. Thanks, I hope it helps.