Yes, you must repressurize the fuel line after replacing the fuel filter on a 1995 Ford vehicle. Here's how to do it:
- Turn the ignition key to the "ON" position without starting the engine. This will activate the fuel pump and pressurize the fuel system.
- Locate the fuel pressure relief valve on the fuel injection rail. On some Ford models, it's located near the fuel pressure regulator. It is usually a small, black plastic cap or fitting with a schrader valve.
- Press down on the schrader valve to release the fuel pressure. You may need to use a flat-head screwdriver or other small tool to do this. (Some fuel injection rails do not have a relief valve. If there is no relief valve on your vehicle, continue to the next step.)
- Turn the ignition key to the "OFF" position and allow the fuel pressure to dissipate.
- Connect a fuel pressure gauge to the fuel pressure test port on the fuel injection rail. If there is no test port, you will need to use a tee fitting to connect the gauge.
- Turn the ignition key to the "ON" position and monitor the fuel pressure gauge.
- Start the engine. The fuel pressure should rise to the specified pressure for your vehicle, which is typically around 35-60 PSI.
If the fuel pressure does not meet specifications or doesn't hold, there may be a problem with the fuel pump, fuel pressure regulator, or other fuel system component.