Caution: Relieving the pressure in the fuel system does not release the fuel system from fuel. Therefore, when working with any elements of the fuel system or when disconnecting it, it is necessary to remember that fuel spillage may occur.
The fuel system contains a fuel tank, which contains a fuel level sensor and a fuel pump, a fuel filter, a fuel injector, a pressure regulator, metal pipes and flexible fuel hoses that connect these components. The system is under pressure when the engine is running or immediately after it is turned off. Before performing any work on the fuel system, it is necessary to depressurize it.
The simplest method of relieving the pressure is to turn off the power to the fuel pump. This can be done by removing the fuel pump fuse or by turning off the red button on the automatic fuel switch, then starting the engine in idle mode and waiting for the engine to stop due to a drop in pressure in the fuel system. To check for pressure relief, try to start the engine several times with the starter. After finishing work on the fuel system, do not forget to install the fuse or press the red button on the automatic fuel pump switch.
After the fuel system is depressurized, it will take significantly longer to start the engine with the starter, since it is necessary to fill the fuel system with fuel and create pressure in it.
The text was obtained in its entirety from the specified website FORDBOOK