🔧 Ignition Coils - Replacement

Replacing the ignition coils on your F-150 means removing the engine cover, intake ducting as needed, and swapping each coil one at a time. This helps fix misfires, rough running, hard starts, and check engine lights caused by weak or failed coils.

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

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⚠️ Safety & Precautions

• Let the engine cool fully before starting. The turbo and ignition components can be very hot.
• Disconnect the negative battery cable before touching ignition coils.
• Keep dirt out of the spark plug wells. Debris can damage plugs and cause misfires.
• Do not pull on the coil wires. Release each electrical connector by the tab.
• If the engine has been misfiring badly, avoid extended cranking during testing.

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🔧 Required Tools

You'll need the following tools for this repair:

• 8mm socket
• 10mm socket
• Ratchet
• 3-inch extension
• Trim tool
• Small pick tool
• Torque wrench
• Dielectric grease
• Safety glasses
• Mechanic gloves

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🔩 Required Parts

HowToo sells all the parts you need for this repair:

• Ignition coil set - Replace all 6 - Qty: 6
• Dielectric grease - Qty: 1
• Optional spark plugs - Qty: 6

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📋 Before You Begin

• Park on level ground and set the parking brake.
• Let the engine cool completely.
• Disconnect the negative battery cable with a 10mm socket.
• If the engine cover or intake tube blocks access, remove them first.

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🔨 Step-by-Step Instructions

Follow these steps in order:

Step 1: Disconnect the battery

• Use a 10mm socket to loosen the negative battery terminal.
• Move the cable aside so it cannot touch the battery post.

Step 2: Remove engine cover and intake parts if needed

• Use a trim tool to release any intake duct clips.
• Use an 8mm socket if hose clamps or brackets block access.
• Lift off the engine cover by hand.

Step 3: Remove the first ignition coil

• Locate the coil on top of the spark plug.
• Press the connector tab and unplug the coil electrical connector.
• Use an 8mm socket to remove the coil hold-down bolt.
• Pull the coil straight up and out.
• Twist slightly if it feels stuck.

Step 4: Install the new ignition coil

• Lightly apply a small amount of dielectric grease inside the coil boot.
• Push the new coil straight down onto the spark plug.
• Install the hold-down bolt and tighten with a torque wrench to 8 Nm (71 in-lbs).
• Reconnect the electrical connector until it clicks.

Step 5: Repeat for all remaining coils

• Replace one coil at a time so parts stay organized.
• Use the same 8mm socket and hand tools for each coil.
• Inspect each spark plug well for oil, water, or debris.

Step 6: Reinstall removed parts

• Reinstall the engine cover and any intake tubing.
• Use the 8mm socket to secure clamps and brackets.
• Reconnect the negative battery terminal with the 10mm socket.

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✅ After Repair

• Start the engine and listen for smooth idle.
• Check that the check engine light is off.
• If a misfire code was present, clear it with a scan tool if needed.
• Take a short test drive and confirm normal acceleration.

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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.