Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSFORD2010FOCUS SES, 2D COUPE, STANDARDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 1273 (FUEL TANK & FUEL LINES)DESCRIPTION AND OPERATIONFUEL TANK AND LINESFUEL SYSTEM
2010 Ford Focus SES, 2D Coupe, Standard
Fuel System
2010 Ford Focus SES, 2D Coupe, StandardSECTION Fuel System
WARNING: This page is about a different car, the 2010 Mercury Milan and 2010 Ford Fusion. However, it is still accessible from the selected car via links, so may be relevant.
The fuel system consists of:
- a 2-speed Mechanical Returnless Fuel System (MRFS).
- a standard L-shaped fuel tank.
- an Easy Fuel TM (capless) fuel tank filler pipe assembly, which cannot be modified in any way.
- a Fuel Pump (FP) module containing:
- an electric FP, which provides pressurized fuel to the fuel rail.
- a serviceable fuel level sender.
- 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 lifetime fuel filter providing filtration to protect the fuel injectors from foreign material.
- fuel, vapor and brake tubes in an integrated bundle assembly attached to the underside of the vehicle by retaining clips.
- has a supplemental refueling adapter located in the luggage compartment.
- a FP control module.
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.