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

Ford Explorer Fifth Generation (2011-2019)

Error Codes

1-2 hours

Time

medium

Difficulty

medium

Severity

3 min read

557 words

Problem Statement

Step-by-step guide on how to replace spark plugs in a Ford Explorer (2011-2019). Learn symptoms, diagnostic steps, and necessary tools for the repair.

Affected Component

Engine

Estimated Time

1-2 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

•Disconnect the battery before working on the electrical systems.
•Allow the engine to cool completely before starting the repair.

Symptoms

•Engine misfires
•Rough idle or poor acceleration
•Decreased fuel efficiency
•Check engine light illuminated
•Increased emissions

Diagnostic Steps

1
Scan for error codes using an OBD-II scanner to check for misfire codes.
2
Inspect spark plug wires for wear or damage.
3
Check for oil or carbon deposits in the spark plug wells.
4
Measure the resistance of the spark plugs using a multimeter.
5
Verify the engine's operating temperature and overall condition.

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
•Torque wrench
•Spark plug socket
•Extension bar
•Ratchet
•Anti-seize compound
•Dielectric grease

Parts Required

•New spark plugs
•Ignition coil seals (if needed)

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Diagnostic Steps

1
Scan for error codes using an OBD-II scanner to check for misfire codes.
2
Inspect spark plug wires for wear or damage.
3
Check for oil or carbon deposits in the spark plug wells.
4
Measure the resistance of the spark plugs using a multimeter.
5
Verify the engine's operating temperature and overall condition.

Solution

1. Preparation

Tools Required: Socket set, torque wrench, spark plug socket, extension bar, ratchet, anti-seize compound, dielectric grease.
Ensure the engine is cool to prevent burns.
Disconnect the negative battery cable to avoid electrical shorts.

2. Remove Engine Cover (if applicable)

Sub-steps:
1. Locate the bolts securing the engine cover, usually found on the top of the engine.
2. Use a socket set to remove the bolts.
3. Lift off the engine cover and set it aside.

3. Access Spark Plugs

Sub-steps:
1. Identify the ignition coil pack locations above each spark plug.
2. Disconnect the electrical connectors from each ignition coil by pressing the tab and pulling gently.
3. Remove the bolts holding the ignition coils in place using a socket wrench.

4. Remove Old Spark Plugs

Sub-steps:
1. Use a spark plug socket and extension to loosen and remove the spark plugs by turning counterclockwise.
2. Inspect the removed spark plugs for wear and damage, noting any abnormal conditions.

5. Install New Spark Plugs

Sub-steps:
1. Apply a small amount of anti-seize compound to the threads of the new spark plugs.
2. Hand-tighten the new spark plugs into the cylinder head until snug.
3. Use a torque wrench to tighten the spark plugs to the manufacturer’s specifications (typically around 13-15 lb-ft).

6. Reinstall Ignition Coils

Sub-steps:
1. Place the ignition coils back over the spark plugs and secure them with their bolts.
2. Reconnect the electrical connectors to each ignition coil until they click into place.

7. Reattach Engine Cover (if applicable)

Sub-steps:
1. Position the engine cover back onto the engine.
2. Secure it by tightening the bolts you removed earlier.

8. Reconnect Battery

Reconnect the negative battery cable.