Sylvie Willis
The 1987 Ford F250 is a truck with a range of engine options, including V8, and some models have dual fuel tanks. While there is limited information on the 1987 model, the 1988 F250 has two or three fuel pumps if it has dual tanks. Electric pumps are usually located inside the fuel tank, and carbureted F250s have mechanical fuel pumps.
| Characteristics | Values |
|---|---|
| Year | 1987 |
| Vehicle | Ford F250 |
| Fuel Pump Location | In the fuel tank |
| Fuel Tank Type | Dual tank |
| Fuel Pump Type | Electric |
| Fuel Pump System | 2 Pump System (in-tank and in-line) |
| Fuel Tank Capacity | 17-19 gallons |
| Common Issues | Stalling, surging, failure to start |
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What You'll Learn
The 1987 F250 has a dual-tank system
The dual-tank system in the 1987 F250 is likely to be a 2-pump system, with one pump in each tank. These pumps are usually electric and located within the fuel tanks themselves. This setup ensures that the fuel can be effectively delivered from the tanks to the engine, powering the vehicle.
However, it's important to note that some F250 models from this year may have mechanical fuel pumps, particularly those with 7.5-liter engines. These mechanical pumps are typically located at the front of the engine.
Over time, the fuel pumps in the 1987 F250 may experience issues or fail altogether. This can manifest as problems starting the vehicle, stalling, or surging. In some cases, a whining noise may be heard from the tank area. If both pumps in the dual-tank system fail simultaneously, it may be more challenging to diagnose the issue, as this is less common.
When troubleshooting fuel pump issues in the 1987 F250, it is recommended to check for power and ground connectivity for the electric pumps. For mechanical pumps, checking the fuses and relays is essential. Additionally, the fuel lines should be inspected to ensure they are properly connected and free of blockages or leaks.
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Electric pumps are usually inside the fuel tanks
The 1987 Ford F250 is available with a 7.5-litre 460 engine and two fuel tanks. While the location of the fuel pump(s) is not explicitly stated, one source mentions that carbureted 250s have a mechanical fuel pump, except for some 7.5-litre models. Another source mentions that electric pumps are usually inside the fuel tanks.
Electric pumps are usually found inside the fuel tanks, delivering fuel under high pressure so that the injectors can spray the fuel into the engine. The in-tank location helps muffle the buzzing noise produced by the electric pump motor, and immersing the pump in fuel helps lubricate and cool the pump motor.
The pump is usually part of the sending unit assembly, which includes a float that sends an electrical signal to the fuel gauge on the instrument panel. The motor inside the pump spins and runs for a few seconds to build pressure in the fuel system. A timer in the PCM limits how long the pump will run until the engine starts. Fuel is drawn into the pump through an inlet tube and mesh filter sock, which helps keep rust and dirt out of the pump. The fuel then exits the pump through a one-way check valve, which maintains residual pressure in the system when the pump is not running.
Some vehicles may have two fuel pumps: a transfer pump inside the tank and a main fuel pump outside. A roller cell pump may be mounted outside the fuel tank, with a second low-pressure supply pump mounted inside the fuel tank.
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Carbureted 250s have mechanical fuel pumps
If your engine misfires, hesitates, or stalls, it may be due to a failing fuel pump. If the pump fails, the vehicle will not run. Mechanical pumps are typically located at the front of the engine.
Some 1987 F250 models have dual fuel tanks, each with its own pump. The high-pressure pump is usually located on the driver's side frame rail, while the low-pressure pump is inside the tank.
To locate the fuel pump, follow the fuel line from under the vehicle to see if it goes into a pump or the fuel rail. If it's electric, ensure that it has power and a good ground connection.
It is important to note that fuel pumps can be challenging to install, and seeking professional assistance may be advisable.
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The fuel pump may need to be replaced
The 1987 Ford F250 has two fuel tanks, and the electric fuel pumps are usually inside the tanks themselves. If your 1987 F250 is not starting, it could be a fuel issue.
Signs that the fuel pump may need to be replaced
If your 1987 F250 is not starting, it could be a fuel pump issue. The first thing to do is to check whether the pumps are coming on. If they are not, then it is likely that you have an electrical problem.
If the pumps are not working, you may need to reset them. If you do have to reset them, then your pumps should run with the key on. If the pumps are still not working, then it may be a problem with the wiring connectors on top of the tank. These can deteriorate and crumble, causing bad connections to the pump.
If your truck has plenty of power and normal gas mileage when it runs, then it is unlikely to be a timing issue. However, it is still worth checking the SPOUT connector (which looks like a big fuse connecting two parallel wires) hanging by the distributor. If you are still unsure, you can test the ignition module.
If you have multiple problems, they should begin to show up as error codes. You can use a code reader to check for these. If you don't have a service manual, you can use a Haynes #36058 for '80-'96.
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Fuel delivery issues can be caused by low fuel levels
The 1987 F250 has dual tanks and electric fuel pumps in each tank. There is no manual fuel pump on the engine. The electric pumps are usually in the fuel tanks themselves.
If your truck won't start, it could be a fuel issue. You can try to start it with some gas in the carb. If your truck has dual tanks, the problem could be with the fuel selector switch. You can check this by removing the fuel hose at the fuel tank selector switch and seeing if the pump is working. If not, the switch may not be allowing fuel flow from the front tank to the engine.
If you are having issues with your fuel pump, you can check if it is a mechanical or electric pump by following the fuel line from under the vehicle to see if it goes into a pump or the fuel rail. If it is electric, make sure you have power and a good ground for the pump. If you don't hear the pumps coming on, you may have an electrical problem or the fuel cutoff switch may have been activated. You can check the switch, which is sometimes called the inertia switch. If your truck has a carbureted engine, you may have a mechanical pump below the engine.
If you are experiencing ongoing issues with your truck losing power and dying while driving, this could be related to the injection pump solenoid or the fuel injection pump.
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Frequently asked questions
Yes, the 1987 F250 has fuel pumps in the tank.
The 1987 F250 has an electric fuel pump.
The fuel pump is located in the fuel tank. Follow the fuel line from under the vehicle to see if it goes into a pump or the fuel rail.
Issues like stalling, surging, or the truck not starting could indicate that the pump is failing. You might also hear a whining noise from the tank area.
The 1987 F250 has two fuel pumps. One is externally mounted, and the other is mounted in the tank.
