🔧 Outlander Sport - Spark Plug Replacement

Replacing the spark plugs restores strong ignition and helps prevent misfires, rough idle, and poor fuel economy. On your Outlander Sport, the plugs sit under the ignition coils on top of the engine, so this is a straightforward DIY with basic hand tools.

Difficulty Level: Beginner | Estimated Time: 0.5-1.5 hours

---

⚠️ Safety & Precautions

• ⚠️ Work on a cool engine to avoid burns and prevent thread damage in the aluminum cylinder head.
• ⚠️ Keep dirt out of the spark plug holes; debris can damage the engine.
• ⚠️ Do not over-tighten spark plugs; stripped threads are expensive to repair.
• ⚠️ Battery disconnect is not required, but keep the key out of the vehicle and ignition OFF.

---

🔧 Required Tools

You'll need the following tools for this repair:

• Safety glasses
• Nitrile gloves
• Ratchet (3/8")
• Extension (3/8", 6")
• Extension (3/8", 10")
• Spark plug socket 5/8" (16mm), rubber insert or магнит type
• 10mm socket
• Torque wrench (3/8", 10-30 Nm range)
• Compressed air blow gun
• Small flat trim tool
• Feeler gauge (0.8-1.1 mm range)

---

🔩 Required Parts

HowToo sells all the parts you need for this repair:

• Spark plugs (iridium/platinum, correct fit for Outlander Sport) - Qty: 4
• Dielectric grease - Qty: 1

---

📋 Before You Begin

• Park on level ground, shift to neutral, and set the parking brake.
• Let the engine cool fully (at least 1 hour if it was hot).
• Open the hood and remove any loose items around the engine bay.

---

🔨 Step-by-Step Instructions

Follow these steps in order:

Step 1: Remove the engine cover (if equipped)

• Lift the cover straight up by hand; if clips resist, use a small flat trim tool to help pop it free.

Step 2: Unplug the ignition coil connectors

• At each coil, press the connector lock tab and pull the connector off by hand; if needed, gently help with a small flat trim tool.
• Pull on the connector, not the wires.

Step 3: Remove the ignition coils

• Use a 10mm socket to remove the bolt holding each coil.
• Twist the coil slightly and pull straight up to remove it.
• Reinstall note: ignition coil bolts get Torque to 10 Nm (89 in-lbs).

Step 4: Blow out the spark plug wells

• Use a compressed air blow gun to blow dirt/debris out of each spark plug tube before removing the plug.
• This prevents grit from falling into the cylinder.

Step 5: Remove the old spark plugs

• Install the spark plug socket 5/8" (16mm) on a ratchet (3/8") with a 6" or 10" extension.
• Turn counterclockwise to loosen, then remove the plug fully.
• If a plug feels stuck, stop and work it gently back and forth with the ratchet (3/8") (don’t force it).

Step 6: Check the new plug gap (quick check)

• Use a feeler gauge (0.8-1.1 mm range) to confirm the gap is about 1.0-1.1 mm (0.039-0.043 in).
• Do not pry on fine-wire iridium tips; if one is off, swap it for another new plug.

Step 7: Install the new spark plugs

• Place the new plug into the spark plug socket 5/8" (16mm) and lower it into the hole using the extension (3/8").
• Thread it in by hand using only the extension (no ratchet) until it seats easily; this helps avoid cross-threading (wrongly threading).
• Use a torque wrench (3/8") to tighten each plug: Torque to 18 Nm (13 ft-lbs).
• Do not use anti-seize unless plug maker demands.

Step 8: Reinstall the ignition coils

• Apply a tiny smear of dielectric grease inside each coil boot (the rubber spark plug “cup”); dielectric grease helps prevent moisture and makes future removal easier.
• Push each coil straight down until fully seated.
• Install coil bolts using a 10mm socket, then tighten with a torque wrench (3/8"): Torque to 10 Nm (89 in-lbs).

Step 9: Plug everything back in

• Reconnect each coil connector by hand until it clicks.
• Reinstall the engine cover by pressing it down into its mounting points.

---

✅ After Repair

• Start the engine and let it idle for 30-60 seconds; it should run smooth with no shaking.
• If you hear a ticking or feel a misfire, shut it off and re-check that every coil connector is fully clicked in.
• Take a short 5-10 minute test drive and verify normal power and no check-engine light.

---

💰 DIY vs Shop Cost

Shop Cost: $200-$450 (parts + labor)

DIY Cost: $35-$90 (parts only)

You Save: $165-$360 by doing it yourself!

Shop labor rates vary but typically run $100-$150/hour. This repair takes a shop approximately 0.7-1.3 hours.

---

🎯 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: Standard 2.0L coil-on-plug layout with iridium-style plugs.