There are a couple of ways to relieve the fuel system pressure in the Ford F-150. The basic way is to disconnect the fuel pump relay, crank the engine and starve the lines of fuel. The other method involves using a fuel gauge on the Schrader valve located along the engine's fuel rail. The Schrader valve covers the fuel pressure test port. Relieving pressure in the fuel lines is necessary if you want to service any component of the fuel system, such as the fuel pump or filter. The procedure is the same in all F-150s with a Schrader valve and fuel test port.
Things You'll Need
- Fuel gauge
- Small bucket
- Shop rags
Shut off your F-150's engine. Open the truck's hood. Let the engine cool down for about 20 minutes.
Grab your fuel gauge, bucket and shop rags. Inspect the passenger side of the engine compartment to find the Schrader valve. Look on the left-top side of the engine to find the fuel rail. On the fuel rail, you'll see the Schrader valve. It usually has a yellow cap and looks similar to a tire valve. Unscrew its cap.
Connect the fuel gauge to the fuel gauge test port. Push the connection on firmly. Run the fuel gauge drain wire into your bucket just in case any fuel leaks.
Push the "Release" or "Relieve" button on your fuel test gauge to relieve the fuel system pressure. A small amount of fuel may leak into the bucket. If you spill any fuel, clean it up with the shop rags and wash yourself well. Replace the Schrader valve cap and proceed with your repair.
Tips & Warnings
- Fuel is highly flammable. Use general precautions when working near it. Do not smoke or work near fire.
How to Relieve Fuel Pressure on a Ford F-150
The Ford F-150 pickup first entered production in 1975 and is the best-selling pickup of all time, consistently leading in units sold...
How to Check the Fuel Pressure PSI in a 1989 F-150
How To Release Fuel Pressure in a Schrader Valve on a F-150 Ford. There are a couple of ways to relieve the...
How to Test Fuel Pressure in a Ford Truck
Testing the fuel pressure in a Ford truck ... Pressure in a Schrader Valve on a F-150 Ford. There are a couple...
Problems with Ford IAC Valves
Problems with Ford IAC Valves. ... How Do I Clean the IAC Module on a 1990 Ford F150? ... How to Change...
What Is a Pressure Release Valve?
What Is a Pressure Release Valve?. ... cylinder on your gas grill and on the propane tank in ... are installed into...