🔧 F-150 - Fuel Cap Replacement

Your fuel cap is a simple but important seal for the fuel system. If the seal is cracked, the cap won’t tighten properly, or you keep getting an EVAP warning, replacing it is the fix. This job is quick and beginner-friendly.

Difficulty Level: Beginner | Estimated Time: 0.1-0.3 hours

---

⚠️ Safety & Precautions

• Work outside or in a very well-ventilated area.
• Do not smoke or work near open flames.
• Make sure the engine is off and cooled down.
• Wipe away any spilled fuel immediately.
• No battery disconnect is required.

---

🔧 Required Tools

You'll need the following tools for this repair:

• None
• Clean shop towel
• Nitrile gloves
• Safety glasses

---

🔩 Required Parts

HowToo sells all the parts you need for this repair:

• Fuel cap - Qty: 1

---

📋 Before You Begin

• Park on level ground and set the parking brake.
• Turn the engine off and remove the key or fob from the vehicle.
• Let the fuel filler area cool if the truck was just driven.

---

🔨 Step-by-Step Instructions

Follow these steps in order:

Step 1: Open the fuel door

• Open the fuel door on the driver side rear quarter panel.

Step 2: Remove the old fuel cap

• Use your hand to turn the cap counterclockwise until it releases.
• Pull the cap away from the filler neck.
• If it is tethered, leave the tether attached.

Step 3: Inspect the filler neck

• Use a clean shop towel to wipe the sealing surface.
• Check for dirt, cracks, or a damaged rubber seal.
• Clean sealing surfaces help prevent EVAP leaks.

Step 4: Install the new fuel cap

• Place the new cap onto the filler neck.
• Turn it clockwise by hand until you hear or feel it click into place.
• Keep turning until it is fully snug.

Step 5: Verify the cap is secure

• Gently tug the cap to confirm it is locked in place.
• Close the fuel door.

---

✅ After Repair

• Start the truck and check the dash for any fuel cap or EVAP warning light.
• If the check engine light was on, it may take several drive cycles to clear after the fix.
• Make sure the cap is tightened fully after every refuel.

---

💰 DIY vs Shop Cost

Shop Cost: $35-$90 (parts + labor)

DIY Cost: $10-$35 (parts only)

You Save: $25-$55 by doing it yourself!

Shop labor rates vary but typically run $100-$150/hour. This repair takes a shop approximately 0.1-0.3 hours.

---

🎯 Ready to get started?

HowToo makes it easy: same-day/2-day shipping on every part, plus all the tools and specialty tools you need! Check out the parts and tools sections below to add everything to your cart.