Ford Workshop Service and Repair Manuals

System Components

Fuel Pump

The fuel pump is driven by the timing belt. The fuel transfer pump is driven by the fuel pump drive shaft.

The fuel pump has three pumping elements with 120° offset (displacement pumps).

The fuel metering valve is located in the supply duct between the fuel transfer pump and the fuel pump, and meters the quantity of fuel which is to be delivered into the high-pressure chamber in accordance with the current operating status of the engine.

Any surplus fuel is returned to the fuel tank via the fuel return line.

Fuel Rail

NOTE: The fuel pressure sensor must not be dismantled from the fuel rail.

The fuel displaced by the fuel pump is delivered through a short high-pressure fuel supply line to the fuel rail.

The fuel rail is made of forged steel. It stores the fuel under high pressure and dampens any additional fluctuations in pressure.

The fuel rail is bolted directly onto the cylinder block by means of two retaining bolts.

The fuel system pressure is measured by the fuel pressure sensor. The fuel pressure sensor converts the fuel system pressure into a voltage signal. This voltage signal is used by the Powertrain Control Module (PCM) as an input signal to calculate the fuel injection quantity.

High-Pressure Fuel Lines

NOTE: The bending radii must not be altered.

NOTE: In order to avoid leaks, new high-pressure fuel supply lines must be installed whenever they are undone.

The high-pressure fuel supply lines connect the fuel rail to the fuel pump and the fuel injectors.

All high-pressure fuel supply lines between the fuel rail and the fuel injectors have the same length and are matched to the system.

Fuel Injectors

NOTE: The fuel injector to cylinder head sealing washers must not be reused.

The fuel injectors are actuated directly by the PCM.

The fuel injectors are secured by means of retaining brackets, which are each attached by two nuts to the cylinder head.

The fuel injector fuel return lines are secured by clips on the upper side of the fuel injectors.

The seal to the upper part of the cylinder head is provided by means of a radial oil seal and a fuel injector seal, which are inserted into the upper part of the cylinder head.