🔧 Veloster - Fuel Cap Replacement

Replacing the fuel cap is a quick job that helps prevent fuel vapor leaks and can stop an EVAP-related check engine light if the cap seal is worn or the cap won’t click tight. On your Veloster, the cap is tethered (attached with a small strap), so you’ll swap it without losing the tether.

Difficulty Level: Beginner | Estimated Time: 0.1-0.2 hours

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⚠️ Safety & Precautions

• ⚠️ Work outdoors or in a well-ventilated area—fuel vapors are flammable.
• ⚠️ No smoking, sparks, or open flames near the fuel door.
• ⚠️ Turn the engine OFF before opening the fuel door.
• ⚠️ Avoid “topping off” the tank after the pump clicks off.
• Battery disconnect is not required for this repair.

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🔧 Required Tools

You'll need the following tools for this repair:

• Nitrile gloves
• Shop towel
• Flashlight

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🔩 Required Parts

HowToo sells all the parts you need for this repair:

• Fuel cap (OEM-style, tethered) - Qty: 1

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📋 Before You Begin

• Park on level ground and turn the engine off.
• Wait 1-2 minutes if you were just driving so vapors can settle.
• Have a shop towel ready in case there’s dust around the filler neck.

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🔨 Step-by-Step Instructions

Follow these steps in order:

Step 1: Open the fuel door

• Use your hand to open the fuel door.
• Use a flashlight to look at the cap and the small tether strap (the tether keeps the cap from getting lost).

Step 2: Remove the old fuel cap

• Use your hand to turn the cap counterclockwise until it releases.
• Let the cap hang by the tether.
• Use a shop towel to gently wipe dirt off the filler neck opening if needed. Keep debris out of the tank.

Step 3: Transfer the tether (if required)

• Put on nitrile gloves.
• If your new cap does not come with a tether already attached, move the tether from the old cap to the new one.
• The tether typically snaps into a small slot on the cap—use your fingers to pop it free and snap it onto the new cap.

Step 4: Install the new fuel cap

• Set the new cap into the filler neck and use your hand to turn it clockwise.
• Keep turning until you feel/hear it “click” several times (this is the cap’s built-in limiter that ensures it’s tight).

Step 5: Close up

• Use your hand to close the fuel door fully.
• Use a shop towel to wipe any fingerprints or dust off the area.

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✅ After Repair

• Start the engine and confirm the fuel door is closed and the cap is fully seated.
• If you were replacing the cap due to a check engine light, it may take a few normal drive cycles for the light to turn off on its own. If it stays on, the vehicle may still have an EVAP leak elsewhere.
• At your next fill-up, verify the cap clicks tight and doesn’t feel cross-threaded (starting crooked).

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💰 DIY vs Shop Cost

Shop Cost: $40-$120 (parts + labor)

DIY Cost: $15-$45 (parts only)

You Save: $25-$75 by doing it yourself!

Shop labor rates vary but typically run $100-$150/hour. This repair takes a shop approximately 0.2-0.5 hours.

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🎯 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.