🔧 Forte - Ignition Coil Replacement

Your Forte uses coil-on-plug ignition coils (one coil per cylinder) mounted on top of the engine. Replacing them is mostly removal of a cover, unplugging electrical connectors, and swapping the coils—then verifying the engine runs smoothly.

Difficulty Level: Beginner | Estimated Time: 0.5-1.0 hours

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⚠️ Safety & Precautions

• ⚠️ Work on a cool engine to avoid burns.
• ⚠️ Turn ignition OFF and keep keys away from the car while unplugging coils.
• ⚠️ Disconnect the negative battery cable if you’re worried about accidental shorting or check-engine lights.
• ⚠️ Pull straight up on coils—don’t yank on the wiring.

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🔧 Required Tools

You'll need the following tools for this repair:

• 10mm socket
• 1/4" drive ratchet
• 6" extension (1/4" drive)
• Torque wrench (inch-pound or small Nm range)
• Trim clip remover
• Small flathead screwdriver
• Needle-nose pliers
• Shop towels
• Nitrile gloves
• Safety glasses

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🔩 Required Parts

HowToo sells all the parts you need for this repair:

• Ignition coil - Replace all four - Qty: 4
• Dielectric grease - Qty: 1

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📋 Before You Begin

• Park on level ground and set the parking brake.
• Let the engine cool fully.
• If disconnecting the battery: use a 10mm socket to remove the negative cable and tuck it aside so it can’t spring back.
• Tip: Do one coil at a time to avoid mix-ups.

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🔨 Step-by-Step Instructions

Follow these steps in order:

Step 1: Remove the engine cover (if equipped)

• If your Forte has a plastic top cover, pull it upward to release the rubber grommets, or remove any fasteners using a 10mm socket.
• Set the cover aside where it won’t get stepped on.

Step 2: Locate the ignition coils

• The coils are lined up on top of the engine valve cover (one per cylinder).
• Each coil has an electrical connector and usually a single small hold-down bolt.

Step 3: Unplug the coil electrical connector

• Press the connector lock tab and pull the connector straight back.
• If it’s stuck, use a small flathead screwdriver to gently help lift the lock tab while pulling. Do not pry hard.
• Tip: Wiggle the connector, don’t force it.

Step 4: Remove the coil hold-down bolt

• Use a 10mm socket, 1/4" drive ratchet, and 6" extension to remove the bolt.
• Place the bolt in a towel or tray so it doesn’t disappear.

Step 5: Remove the ignition coil

• Grab the coil body and pull straight upward while gently twisting.
• If it’s stubborn, keep the pull straight up—don’t lever against the valve cover.
• Tip: A gentle twist breaks the boot seal.

Step 6: Prep and install the new coil

• Put a tiny smear of dielectric grease inside the rubber boot lip (this helps sealing and future removal). Dielectric grease is non-conductive grease used on electrical boots to prevent moisture.
• Push the new coil straight down into the spark plug tube until it fully seats.

Step 7: Reinstall the coil bolt and torque it

• Start the bolt by hand first to avoid cross-threading.
• Tighten with a 10mm socket and then use a torque wrench.
• Torque to 8 Nm (71 in-lbs)

Step 8: Reconnect the electrical connector

• Push the connector on until it clicks/locks.
• Lightly tug to confirm it’s secure.

Step 9: Repeat for the remaining coils

• Repeat Steps 3–8 for the other cylinders, one coil at a time.

Step 10: Reinstall the engine cover and battery cable

• Reinstall the engine cover by pressing it into the grommets, or tighten any fasteners using a 10mm socket.
• If disconnected, reconnect the negative battery cable using a 10mm socket (snug, not over-tight).

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✅ After Repair

• Start the engine and let it idle for 1–2 minutes. It should run smooth with no shaking.
• If the check engine light is on, re-check every coil connector is fully clicked in.
• Take a short test drive and verify normal acceleration with no misfire (no bucking or flashing check engine light).
• If you have a scan tool, clear any stored misfire codes and confirm none return.

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💰 DIY vs Shop Cost

Shop Cost: $250-$650 (parts + labor)

DIY Cost: $120-$480 (parts only)

You Save: $130-$170 by doing it yourself!

Shop labor rates vary but typically run $100-$150/hour. This repair takes a shop approximately 0.5-1.0 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.

Assumption: stock 2.0L coil-on-plug layout with 10mm coil fasteners.