how to replace spark plugs on Ford Explorer Fifth Generation (2011-2019)

Ford Explorer Fifth Generation (2011-2019)

Error Codes

2-4 hours

Time

medium

Difficulty

medium

Severity

4 min read

606 words

Problem Statement

Step-by-step guide on how to replace spark plugs in Ford Explorer (2011-2019). Improve engine performance and fuel economy with this detailed solution.

Affected Component

Engine

Estimated Time

2-4 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

•Disconnect the battery before starting work to prevent electrical shock.
•Allow the engine to cool completely before beginning work to avoid burns.

Symptoms

•Check engine light illuminated
•Engine misfiring or rough idle
•Decreased acceleration or power
•Poor fuel economy
•Difficulty starting the engine

Diagnostic Steps

1
Scan for error codes using an OBD-II scanner to confirm spark plug issues.
2
Inspect current spark plugs for signs of wear, carbon buildup, or damage.
3
Check ignition coil operation to rule out other potential ignition issues.
4
Assess engine performance during a test drive to gauge overall functionality.

Solution

💡 Expert Tip

For complex repairs like this, consider taking photos at each step. This helps if you need to reverse a step or consult with a mechanic. Also, keep all removed parts organized - you may need to reference them during reassembly.

Verification

After completing the repair, verify that the issue has been resolved:

✓Test the affected component to ensure it functions correctly
✓Check for any error codes or warning lights
✓Monitor the vehicle for a few days to ensure the issue does not recur

Prevention Tips

To prevent this issue from occurring again:

•Follow the manufacturer's recommended maintenance schedule
•Address warning signs early before they develop into major issues
•Use quality parts and fluids recommended for your vehicle
•Keep detailed records of all repairs and maintenance

Tools & Equipment Required

•Socket set (including 5/8 inch spark plug socket)
•Torque wrench
•Ratchet
•Extension bar
•Pliers
•Wire brush or compressed air

Parts Required

•New spark plugs (OEM recommended)

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Diagnostic Steps

1
Scan for error codes using an OBD-II scanner to confirm spark plug issues.
2
Inspect current spark plugs for signs of wear, carbon buildup, or damage.
3
Check ignition coil operation to rule out other potential ignition issues.
4
Assess engine performance during a test drive to gauge overall functionality.

Solution

1. Preparation

Gather tools and parts needed.
Tools Required:
- Socket set (including 5/8 inch spark plug socket)
- Torque wrench
- Ratchet
- Extension bar
- Pliers
- Wire brush or compressed air
Parts Required:
- New spark plugs (OEM recommended)
Safety Warnings:
- Disconnect the battery before starting work to prevent electrical shock.

2. Remove Engine Cover (if applicable)

Locate the engine cover and remove any screws or bolts securing it.
Carefully lift the engine cover off and set it aside.

3. Access Spark Plugs

Locate the ignition coils on top of the engine where the spark plugs are housed.
For each cylinder, disconnect the electrical connector from the ignition coil by pressing the release tab and pulling it off.
Remove the bolts securing the ignition coils using the socket set and lift the coils out to expose the spark plugs.

4. Remove Old Spark Plugs

Use the spark plug socket and ratchet to carefully unscrew and remove the old spark plugs from the cylinder head.
Inspect the old spark plugs for wear patterns or damage as a diagnostic reference.

5. Install New Spark Plugs

Apply a small amount of anti-seize compound to the threads of the new spark plugs (if not pre-coated).
Carefully thread the new spark plugs into the cylinder head by hand to avoid cross-threading.
Use the torque wrench to tighten the spark plugs to the manufacturer’s specifications (typically 13-15 lb-ft).

6. Reinstall Ignition Coils and Connectors

Place the ignition coils back onto the spark plugs and secure them with their bolts.
Reconnect the electrical connectors to each ignition coil until they click into place.

7. Reattach Engine Cover (if applicable)

Position the engine cover back into place and secure it with the screws or bolts previously removed.

8. Reconnect Battery

Reconnect the negative terminal of the battery and ensure it is tightened securely.