2006 Ford F150 Owner Guide 4th Printing - Page 294

Maintenance and Specifications Fuel Filler Cap Your fuel tank filler cap has an indexed design with a 1/4 turn on/off feature. When fueling your vehicle: 1. Turn the engine off. 2. Carefully turn the filler cap counterclockwise 1/4 of a turn until it stops. 3. Pull to remove the cap from the fuel filler pipe. 4. To install the cap, align the tabs on the cap with the notches on the filler pipe. 5. Turn the filler cap clockwise 1/4 of a turn until it clicks at least once. If the digital display, if equipped, reads "CHECK FUEL CAP" and stays on after you start the engine, the fuel filler cap may not be properly installed. Turn off the engine, remove the fuel filler cap, align the cap properly and reinstall it. If you must replace the fuel filler cap, replace it with a fuel filler cap that is designed for your vehicle. The customer warranty may be void for any damage to the fuel tank or fuel system if the correct genuine Ford or Motorcraft fuel filler cap is not used. The fuel system may be under pressure. If the fuel filler cap is venting vapor or if you hear a hissing sound, wait until it stops before completely removing the fuel filler cap. Otherwise, fuel may spray out and injure you or others. 294 2006 F-150 (f12) Owners Guide (post-2002-fmt) USA (fus)