🔧 Compass - Fuel Cap Replacement

Replacing the fuel cap on your Compass is a quick job that helps prevent fuel vapor leaks and check-engine lights (like an EVAP leak code). You’ll remove the old cap, inspect the sealing surface, and install the new cap until it clicks.

Difficulty Level: Beginner | Estimated Time: 0.1-0.25 hours

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⚠️ Safety & Precautions

• ⚠️ Work in a well-ventilated area away from flames, cigarettes, or sparks.
• ⚠️ Don’t top off fuel after the pump clicks off (can damage EVAP system).
• ⚠️ If the engine was just running, let things cool a few minutes before working near fuel vapors.
• ⚠️ 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
• Clean shop towel
• Flashlight

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🔩 Required Parts

HowToo sells all the parts you need for this repair:

• Fuel cap - Qty: 1

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📋 Before You Begin

• 🅿️ Park on level ground and shut the engine off.
• 🧯 If you just refueled, wait a minute for vapors to settle.
• 🧼 Have your clean shop towel ready to wipe the filler neck sealing surface.

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🔨 Step-by-Step Instructions

Follow these steps in order:

Step 1: Open the fuel door

• Open the fuel door on the left rear quarter panel.
• Use a flashlight to see the cap area clearly.

Step 2: Remove the old fuel cap

• Turn the cap counterclockwise until it releases, then remove it.
• If your cap is attached with a tether (a small retaining strap), let it hang without twisting it.
• Tip: Turn slowly to avoid splashing vapors.

Step 3: Inspect and clean the sealing surface

• Put on nitrile gloves.
• Use a clean shop towel to wipe the filler neck lip where the cap seals.
• Check the old cap’s rubber seal (gasket). Cracks, flat spots, or missing seal can cause leaks.

Step 4: Install the new fuel cap

• Place the new cap on the filler neck and turn it clockwise.
• Tighten until you hear/feel at least 3 clicks (this means it’s properly sealed).
• If there’s a tether, make sure it isn’t pinched and the cap hangs naturally.

Step 5: Close up

• Close the fuel door securely.
• Use the flashlight for a final quick check that the cap is seated evenly.

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✅ After Repair

• 🚗 Start the engine and make sure the check engine light stays off.
• 🛠️ If you replaced the cap because of a check engine light, it may take a few drive cycles for the light to clear on its own.
• 🔍 If the light returns, you may have another EVAP leak (like a purge valve, vent valve, or hose).

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💰 DIY vs Shop Cost

Shop Cost: $60-$140 (parts + labor)

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

You Save: $45-$95 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.