Fuel System - General Information - Ecoboost Engine Ford Focus ST III

Specifications

GENERAL SPECIFICATIONS

Overview

The fuel system consist of

1. a Closed Loop Pressure Control System (CLPCS).
2. a standard fuel tank.
3. fuel, vapor and brake tubes in an integrated bundle assembly attached to the underside of the vehicle by retaining clips.
4. a FTP sensor (part of the fuel vapor tube assembly).
5. a lifetime fuel filter (serviced as part of the FP module).
6. a FP module that supplies fuel under pressure to the high pressure FP.
7. a serviceable fuel level sender mounted on the FP module.
8. an Easy Fuel™ fuel tank filler pipe assembly, which cannot be modified in any way and is serviced only by the installation of a new fuel tank filler pipe assembly.
9. a supplemental refueling adapter located in the spare tire compartment.

FP Shut-off Feature

In the event of a moderate to severe collision, the vehicle is equipped with a FP shut-off feature that is initiated by the event notification signal.

Symptom Chart: Fuel System

Diagnostics in this manual assume a certain skill level and knowledge of Ford-specific diagnostic practices.

REFER to: Diagnostic Methods ( DIAGNOSTIC METHODS ).

for information regarding Ford-specific diagnostic practices.

Note. The following procedure diagnoses a slow to fill concern only. For all other concerns, refer to ENGINE CONTROLS - POWERTRAIN DTC CHARTS & DESCRIPTIONS (EXCEPT DIESEL & HYBRID) .

Symptom Chart

Slow to Fill

Normal Operation and Fault Conditions

Under normal operation, fuel should flow at a steady rate through the fuel tank filler pipe into the fuel tank. As fuel enters the fuel tank air is vented through the filler pipe or the ORVR system.

1. Fuel tank filler pipe vent tube, if equipped
2. Fuel tank filler pipe
3. Evaporative Emission (EVAP) system
4. Fuel tank inlet check valve (part of the fuel tank)
5. Fuel level vent valve, if equipped (part of the fuel tank)

Fuel System Pressure Release

Fuel System Pressure Check

Special Tool(s) / General Equipment

310-D009 Fuel Pressure Test Kit

Fuel Tank Draining

Spring Lock Couplings

Special Tool(s) / General Equipment

310-S039 Disconnect Tool, Spring Lock Coupling

Scheme 25

Scheme 26

1. Align and push the spring lock coupling onto the tube until fully seated.
2. Pull on the coupling to make sure it is fully engaged.
3. Connect the battery ground cable. Refer to: «BATTERY DISCONNECT AND CONNECT»(/ford/focus-st/iii-2012-2015/remont/charging-system/#battery-mounting-and-cables-except-electric) .

Quick Release Coupling

Disconnect

Note. When reusing liquid tube connectors, make sure to use compressed air to remove any foreign material from the connector retaining clip area before separating from the tube or damage to the tube or connector retaining clip may occur.

Note. Fuel injection equipment is manufactured to very precise tolerances and fine clearances. It is essential that absolute cleanliness is observed when working with these components or component damage may occur. Always install blanking plugs to any open orifices or tubes.

Note. Do not use any tools. The use of tools may cause a deformity in the clip components which may cause fuel leaks.

Note. Type 1

Connect

1. Inspect and clean both quick coupling ends.
2. Install the quick release coupling onto the tube.
3. Press the retainer clip into the quick release coupling body until flush and the tabs are locked in place.
4. Connect the battery ground cable. Refer to: «BATTERY DISCONNECT AND CONNECT»(/ford/focus-st/iii-2012-2015/remont/charging-system/#battery-mounting-and-cables-except-electric) .

Disconnect

Note. When reusing liquid tube connectors, make sure to use compressed air to remove any foreign material from the connector retaining clip area before separating from the tube or damage to the tube or connector retaining clip may occur.

Note. Fuel injection equipment is manufactured to very precise tolerances and fine clearances. It is essential that absolute cleanliness is observed when working with these components or component damage may occur. Always install blanking plugs to any open orifices or tubes.

Note. Do not use any tools. The use of tools may cause a deformity in the clip components which may cause fuel leaks.

Note. Type 2

Connect

Scheme 27

1. Release the lock tab and install the quick release coupling onto the fitting.
2. Apply the lock tab into the latched position.
3. Pull on the quick release coupling to make sure it is securely fastened.
4. Connect the battery ground cable. Refer to: «BATTERY DISCONNECT AND CONNECT»(/ford/focus-st/iii-2012-2015/remont/charging-system/#battery-mounting-and-cables-except-electric) .

Disconnect

Note. When reusing liquid tube connectors, make sure to use compressed air to remove any foreign material from the connector retaining clip area before separating from the tube or damage to the tube or connector retaining clip may occur.

Note. Fuel injection equipment is manufactured to very precise tolerances and fine clearances. It is essential that absolute cleanliness is observed when working with these components or component damage may occur. Always install blanking plugs to any open orifices or tubes.

Note. Do not use any tools. The use of tools may cause a deformity in the clip components which may cause fuel leaks.

Note. Type 3

Connect

1. Install the quick release coupling onto the tube until it is fully seated.
2. Pull on the quick release coupling to make sure it is securely fastened.
3. Connect the battery ground cable. Refer to: «BATTERY DISCONNECT AND CONNECT»(/ford/focus-st/iii-2012-2015/remont/charging-system/#battery-mounting-and-cables-except-electric) .

Disconnect

Note. When reusing liquid tube connectors, make sure to use compressed air to remove any foreign material from the connector retaining clip area before separating from the tube or damage to the tube or connector retaining clip may occur.

Note. Fuel injection equipment is manufactured to very precise tolerances and fine clearances. It is essential that absolute cleanliness is observed when working with these components or component damage may occur. Always install blanking plugs to any open orifices or tubes.

Note. Do not use any tools. The use of tools may cause a deformity in the clip components which may cause fuel leaks.

Note. Type 4

Connect

1. Install the quick release coupling onto the tube until it is fully seated.
2. Pull on the quick release coupling to make sure it is securely fastened.
3. Connect the battery ground cable. Refer to: «BATTERY DISCONNECT AND CONNECT»(/ford/focus-st/iii-2012-2015/remont/charging-system/#battery-mounting-and-cables-except-electric) .

See also:
• DIAGNOSTIC METHODS
• GASOLINE AND GASOLINE-ETHANOL FUEL SYSTEMS HEALTH AND SAFETY PRECAUTIONS
• BATTERY DISCONNECT AND CONNECT
• Pinpoint Test A
• Fuel System Pressure Release