Owners should remember that all components of the fuel system from the
tank to the fuel rail and injectors contain fuel which is under pressure
when the engine is running.
The pressure will remain for some time after the engine has been
switched off and must be relieved before any of these components is
disturbed for servicing work.
The first method is simply to exhaust the supply of fuel remaining in
the system. Start the engine, remove the right-hand side panel and
disconnect the fuel tank wiring connector plug. The pump will then cease
to operate and the engine will run only while fuel remains under
pressure. Switch off the ignition and re-connect the tank wiring as soon
as the engine stops.
The second method can be used if the engine has just been switched
off. Disconnect the pressure regulator vacuum hose (usually identified
by its protective coil spring) from the rearmost throttle body vacuum
stub and suck as hard as possible to open the regulator diaphragm. The
pressure will then disperse into the fuel tank. Re-connect the vacuum
Note: with both of these methods fuel will still be present in the
system components; it will merely no longer be under pressure. Take all
suitable precautions (see Section
2) to prevent the risk of fire or of
personal injury when working on any part of the fuel system.