Fuel System Pressure Release
WARNING: This page is about a different car, the 2007 Mercury Mariner and 2007 Ford Escape. However, it is still accessible from the selected car via links, so may be relevant.
WARNING:
Do not smoke or carry lighted tobacco or open flame of any type when working on or near any fuel-related component. Highly flammable mixtures are always present and may be ignited. Failure to follow these instructions can result in personal injury.
WARNING:
Do not carry personal electronic devices such as cell phones, pagers or audio equipment of any type when working on or near any fuel-related components. Highly flammable mixtures are always present and may be ignited. Failure to follow these instructions can result in personal injury.
WARNING:
Fuel in the fuel system remains under high pressure, even when the engine is not running. Before servicing or disconnecting any of the fuel lines or fuel system components, the fuel system pressure must be relieved to prevent accidental spraying of fuel, causing personal injury or a fire hazard.
All vehicles except Hybrid
- Remove the fuel pump relay.
- With the vehicle in NEUTRAL, position it on a hoist. For additional information, refer to JACKING AND LIFTING article.
- Disconnect the fuel pump driver module electrical connector.
- Start the engine and allow it to idle until it stalls.
- After the engine stalls, crank the engine for approximately 5 seconds to make sure the fuel injection supply manifold pressure has been released.
- Turn the ignition switch to the OFF position.
- When fuel system service is complete, install the fuel pump relay.
- Connect the fuel pump driver module electrical connector.
- Cycle the ignition key and wait 3 seconds to pressurize the fuel system. Check for leaks before starting the engine.
- Start the vehicle and check the fuel system for leaks.
Hybrid
All vehicles
All vehicles except Hybrid
Hybrid
All vehicles
NOTE:
It may take more than one key cycle to pressurize the fuel system.