how to check the spark plugs in my 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

510 words

Problem Statement

Learn how to check and replace spark plugs in your Ford Explorer (2011-2019) for optimal engine performance. Step-by-step guide included.

Affected Component

Engine

Estimated Time

1-2 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

•Disconnect the battery before working on electrical components.
•Allow the engine to cool before accessing the spark plugs.

Symptoms

•Rough engine idle
•Engine misfires or hesitation during acceleration
•Reduced fuel efficiency
•Check engine light illuminated
•Difficulty starting the engine

Diagnostic Steps

1
Open the hood and locate the engine cover; if applicable, remove it to access the spark plugs.
2
Disconnect the battery to prevent any electrical shorts while working.
3
Use an OBD-II scanner to check for any stored trouble codes related to ignition or misfire.
4
Visually inspect the spark plug wires (or ignition coils) for damage or wear.
5
Remove the spark plug using a spark plug socket and ratchet, taking care to keep track of each plug's location.

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

•Spark plug socket
•Ratchet
•Torque wrench
•Gap gauge
•Dielectric grease
•Anti-seize compound

Parts Required

•Spark plugs (OEM recommended)
•Ignition coils (if needed)

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Diagnostic Steps

1
Open the hood and locate the engine cover; if applicable, remove it to access the spark plugs.
2
Disconnect the battery to prevent any electrical shorts while working.
3
Use an OBD-II scanner to check for any stored trouble codes related to ignition or misfire.
4
Visually inspect the spark plug wires (or ignition coils) for damage or wear.
5
Remove the spark plug using a spark plug socket and ratchet, taking care to keep track of each plug's location.

Solution

1. Preparation

Tools Required: Spark plug socket, ratchet, torque wrench, gap gauge, dielectric grease, anti-seize compound.
Disconnect the negative terminal of the battery to ensure safety.
Allow the engine to cool down to avoid burns.

2. Remove Spark Plugs

Carefully unplug the ignition coil connector from each spark plug (if applicable).
Remove the coil by unbolting it (if applicable) and pulling it straight out of the spark plug well.
Use the spark plug socket and ratchet to unscrew each spark plug, turning counterclockwise. Note the condition of each plug.

3. Inspect Spark Plugs

Check each spark plug for signs of wear such as discoloration, corrosion, or deposits.
Measure the gap using a gap gauge; refer to the manufacturer's specifications for the correct gap size (typically around 0.054 inches for this model).

4. Install New or Cleaned Spark Plugs

If installing new plugs, apply a small amount of anti-seize compound to the threads.
Set the gap if using new plugs, ensuring it matches manufacturer specifications.
Insert each spark plug into the cylinder head by hand to avoid cross-threading, then tighten using the torque wrench to the specified torque (typically around 13 ft-lbs).
Reinstall the ignition coils and reconnect their connectors.

5. Final Checks

Reconnect the negative battery terminal.
Start the engine and allow it to idle to ensure smooth operation.
Inspect for any unusual noises or vibrations.