🔧 Ignition Coils - Replacement

On your F-150, the ignition coils sit on top of the engine and can be replaced one at a time or as a full set. If you have a misfire, replacing the failed coil is the fix; if the coils are original and high-mileage, it’s smart to replace all six together.

Difficulty Level: Beginner | Estimated Time: 1-2 hours

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⚠️ Safety & Precautions

• Let the engine cool fully before starting. Coils and valve covers can get hot.
• Disconnect the negative battery cable before unplugging coils to reduce the chance of a short.
• Do not pull on the wire harness. Press the connector tab and remove it by hand.
• Keep dirt out of the spark plug wells. Debris can fall into the cylinder head.
• If a misfire has been present for a while, inspect the spark plugs too. A bad plug can damage a new coil.

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🔧 Required Tools

You'll need the following tools for this repair:

• 8mm socket
• 1/4-inch ratchet
• 1/4-inch extension
• Trim clip tool
• Dielectric grease
• Torque wrench
• Safety glasses
• Mechanic gloves

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🔩 Required Parts

HowToo sells all the parts you need for this repair:

• Ignition coil - Qty: 6

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📋 Before You Begin

• Park on level ground and set the parking brake.
• Turn the ignition off and remove the key or fob from the vehicle.
• Open the hood and let the engine cool down.
• Disconnect the negative battery cable with an 8mm socket.

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🔨 Step-by-Step Instructions

Follow these steps in order:

Step 1: Remove the engine cover

• Use a trim clip tool or pull straight up, depending on how the cover is retained.
• Lift the cover off and set it aside.
• Pull straight up to avoid breaking clips.

Step 2: Disconnect the first coil

• Find the ignition coil on top of the valve cover.
• Press the connector tab and unplug the coil harness by hand.
• Use an 8mm socket and 1/4-inch ratchet to remove the coil hold-down bolt.

Step 3: Remove the coil

• Twist the coil slightly and pull it straight up out of the spark plug well.
• If it is stuck, wiggle it gently while pulling up.
• Inspect the boot for oil, cracks, or carbon tracking.

Step 4: Install the new coil

• Put a small amount of dielectric grease inside the coil boot.
• Push the new coil straight down onto the spark plug until it seats fully.
• Reinstall the hold-down bolt with the 8mm socket.
• Torque to 7 Nm (62 lb-in).
• Reconnect the electrical connector until it clicks.

Step 5: Repeat for the remaining coils

• Repeat the same process for each remaining coil.
• Keep the connectors and bolts organized so each one goes back in the same spot.

Step 6: Reinstall the engine cover and battery cable

• Press the engine cover back into place.
• Reconnect the negative battery cable with the 8mm socket.

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✅ After Repair

• Start the engine and listen for smooth idle.
• Check the dashboard for a check engine light.
• If the light stays on, scan for misfire codes and clear them after the repair.
• Test drive the truck and make sure the engine pulls smoothly under light throttle.

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💰 DIY vs Shop Cost

Shop Cost: $450-$900 (parts + labor)

DIY Cost: $180-$420 (parts only)

You Save: $270-$480 by doing it yourself!

Shop labor rates vary but typically run $100-$150/hour. This repair takes a shop approximately 1-2 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.