Ford Focus Service Manual: Fuel Tank and Lines - Description and Operation

Ford Focus Service Manual / Powertrain / Engine / Fuel System / Fuel Tank and Lines - Description and Operation

The fuel system consists of:

a Mechanical Returnless Fuel System (MRFS) .
a standard fuel tank.
fuel, vapor and brake tubes in an integrated bundle assembly attached to the underside of the vehicle by retaining clips.
a lifetime fuel filter (serviced as part of the Fuel Pump (FP) module).
a one-fourth turn fuel tank filler cap.
an Inertia Fuel Shutoff (IFS) switch.
a FP module containing:
- an electric FP , which provides pressurized fuel to the fuel rail.
- a serviceable fuel level sender.
- a fuel filter.
- a check valve, which maintains system pressure after the FP is shut off.
- a pressure relief valve for overpressure protection in the event of restricted fuel flow.
a fuel tank filler pipe containing:
- a recirculation tube.
- a fresh air hose.
- a restrictor plate to permit only unleaded fuel to be pumped into the tank.

The fuel tank filler pipe cannot be modified in any way.

The vehicle is equipped with electronic multiport fuel injection that is supplied by a MRFS .

Fuel Injectors

Removal and Installation The fuel injectors are serviced with the fuel rail. For additional information, refer to Fuel Rail and Fuel Injector — Exploded View and Fuel Rail in this section. ...

Fuel Tank and Lines - Removal and Installation

Removal and Installation WARNING: Do not smoke, carry lighted tobacco or have an open flame of any type when working on or near any fuel-related component. Highly flammable mixtures are always p ...

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