This procedure covers the replacement of the fuel filler cap on a 2011-2014 Ford F-150 with 5.0L V8 Coyote engine.

Warnings

Tools required

Parts

• Fuel filler cap × 1 — Ford FL3Z-9030-A or equivalent OEM cap

Preparation

1. Verify the correct replacement cap type for your vehicle (traditional threaded or capless system insert)
2. Inspect the fuel filler neck for damage or debris before installing new cap

Procedure

1. 1

   Remove old fuel cap
   For traditional threaded caps: Turn the fuel cap counterclockwise until it releases. For capless systems: The cap is an internal flapper door assembly that requires releasing the spring-loaded door and twisting the internal cap mechanism counterclockwise to remove.
2. 2

   Inspect filler neck seal surface
   Examine the fuel filler neck opening for dirt, debris, or damage to the sealing surface. Clean with a lint-free cloth if necessary. Check for cracks or corrosion that might prevent proper sealing.
3. 3

   Install new fuel cap
   For traditional threaded caps: Align the cap with the filler neck threads and turn clockwise until you hear 3-4 clicks or the ratcheting mechanism engages. For capless systems: Insert the replacement cap assembly, align the tabs, and turn clockwise until it locks into place and sits flush with the filler door opening.

Reassembly

1. No additional reassembly required for this procedure

Verification

• Start the engine and verify that no check engine light illuminates due to EVAP system leak codes (P0455, P0456, or P0457)
• Visually confirm the fuel cap is seated properly and flush with the filler neck or capless door
• For traditional caps, ensure the tether is properly connected and not damaged

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