🔧 Accord - Fuel Cap Replacement

Replacing the fuel cap on your Accord is a quick job that helps prevent fuel vapor leaks and can stop an EVAP-related check engine light caused by a worn seal or a cap that won’t click tight.

You’ll remove the old cap, inspect/clean the filler neck (the opening the cap seals against), and install a new cap until it clicks.

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

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⚠️ Safety & Precautions

• ⚠️ Work outside or in a well-ventilated area; fuel vapors are flammable.
• ⚠️ No smoking, sparks, or open flames near the fuel door.
• ⚠️ If the engine was running, wait a few minutes before opening the cap to reduce vapor pressure.
• ⚠️ If you smell strong fuel odor after install, don’t drive—recheck the cap and sealing surface.

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🔧 Required Tools

You'll need the following tools for this repair:

• Nitrile gloves
• Safety glasses
• Clean 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, shut the engine off, and remove the key.
• ⛽ If you just drove the car, wait 2–3 minutes before opening the fuel door.
• 🧼 Have a clean shop towel ready to wipe the sealing surface.

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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 on the left rear quarter panel.
• Use a flashlight to look for dirt or damage around the filler opening.

Step 2: Remove the old fuel cap

• Put on nitrile gloves and safety glasses.
• Turn the cap counterclockwise by hand until it releases, then remove it.
• If it hisses, pause briefly.

Step 3: Inspect and clean the sealing surface

• Use a flashlight to inspect the rubber seal on the cap and the metal/plastic lip (filler neck) where the cap seals.
• Use a clean shop towel to wipe the filler neck sealing lip clean and dry.
• If the old cap’s rubber seal is cracked, flattened, or sticky, that’s a common cause of EVAP leaks.

Step 4: Install the new fuel cap

• Install the new cap and turn it clockwise by hand.
• Tighten until you hear/feel it click (typically 1–3 clicks). This click is the cap’s built-in limiter so it seals correctly.
• If your cap has a tether (strap), make sure it’s not twisted and doesn’t prevent the cap from seating.

Step 5: Close up

• Close the fuel door firmly by hand.
• Use a clean shop towel to wipe off any fuel residue around the area if needed.

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✅ After Repair

• 🔍 Start the engine and confirm there’s no strong fuel smell near the fuel door.
• 🛠️ If your check engine light was on for a loose cap/EVAP leak, it may take a few drive cycles to turn off on its own after replacing the cap.
• 📟 If the light stays on after a few days of normal driving, the EVAP system may have another leak and may need code reading.

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💰 DIY vs Shop Cost

Shop Cost: $30-$90 (parts + labor)

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

You Save: $15-$45 by doing it yourself!

Shop labor rates vary but typically run $100-$150/hour. This repair takes a shop approximately 0.1-0.2 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.