why does my Ford Explorer's engine make a knocking noise?

Ford Explorer Fifth Generation (2011-2019)

Error Codes

2-4 hours

Time

medium

Difficulty

high

Severity

4 min read

606 words

⚠️ Safety Warning

This issue requires immediate attention. If you are not experienced with automotive repairs, consult a professional mechanic. Working on critical systems can be dangerous.

Problem Statement

Learn how to diagnose and fix engine knocking noise in Ford Explorer. Step-by-step guide with diagnostic procedures and repair instructions.

Affected Component

Engine

Estimated Time

2-4 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

•Disconnect the battery before working on electrical systems
•Allow the engine to cool before opening any components

Symptoms

•Knocking or tapping noise coming from the engine compartment
•Loss of power during acceleration
•Engine misfires or rough idling
•Check engine light illuminated
•Poor fuel economy
•Increased engine temperature

Diagnostic Steps

1
Scan for error codes using OBD-II scanner
2
Inspect engine oil level and condition
3
Listen for noise source with a mechanic's stethoscope
4
Check spark plugs for wear or damage
5
Inspect timing components for wear
6
Examine engine mounts for wear or damage

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

•OBD-II scanner
•Mechanic’s stethoscope
•Socket set
•Torque wrench
•Oil catch pan

Parts Required

•Engine oil
•Oil filter
•Spark plugs
•Timing chain/belt components (if necessary)

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Solution

1. Preparation

Gather Tools: OBD-II scanner, mechanic’s stethoscope, socket set, torque wrench, oil catch pan, engine oil, new spark plugs (if needed).
Safety Precautions: Ensure the vehicle is parked on a level surface, engage the parking brake, and allow the engine to cool before proceeding.

2. Change Engine Oil

Drain Old Oil: Remove the oil drain plug using a socket wrench and let the old oil drain into an oil catch pan.
Replace Oil Filter: Use an oil filter wrench to remove the old oil filter. Apply a small amount of new oil to the rubber gasket on the new filter, then install it.
Add New Oil: Replace the drain plug, and refill the engine with the appropriate type and amount of new oil as per the owner's manual.

3. Replace Spark Plugs

Remove Ignition Coils: Use a socket to remove the bolts securing the ignition coils and gently pull them out.
Replace Spark Plugs: Use a spark plug socket to remove old plugs. Install new plugs, ensuring they are torqued to the manufacturer’s specifications.
Reinstall Ignition Coils: Replace the ignition coils and their bolts.

4. Inspect and Replace Timing Components (if necessary)

Remove Engine Cover: Use a socket set to remove bolts securing the engine cover and lift it off.
Inspect Timing Chain/Belt: Check for signs of wear, stretching, or damage. If issues are found, replace the timing chain/belt and tensioners, following the manufacturer’s specifications.