why is my Ford F-150 getting poor gas mileage lately?

Solution

1. Preparation

• Gather necessary tools and parts.
• Ensure the vehicle is parked on a level surface and the engine is off.
• Safety warning: Disconnect the battery before working on electrical components.

2. Replace Air Filter

• Locate the air filter housing.
• Remove the clips or screws securing the air filter cover.
• Take out the old air filter and clean the housing if necessary.
• Insert a new air filter, ensuring it fits snugly.
• Reattach the air filter cover and secure it.

3. Clean Fuel Injectors

• Use a fuel injector cleaning kit or solvent.
• Disconnect the fuel rail and remove the injectors.
• Soak the injectors in cleaning solvent for the recommended time.
• Reinstall the cleaned injectors, ensuring proper seating.
• Reconnect the fuel rail and check for leaks.

4. Replace Oxygen Sensors

• Identify the upstream and downstream oxygen sensors.
• Use a wrench to unscrew the faulty sensors.
• Install new oxygen sensors, tightening them to the manufacturer's torque specifications (typically around 30 lb-ft).
• Reconnect the wiring harness.

5. Tire Maintenance

• Check and adjust tire pressure to the manufacturer's recommendations (usually found on the driver's side door jamb).
• Inspect tires for uneven wear and consider rotation or replacement if necessary.