my Honda Pilot makes a knocking noise when accelerating what's the issue

Honda Pilot Third Generation (2016-present)

Error Codes

2-4 hours

Time

medium

Difficulty

medium

Severity

3 min read

575 words

Problem Statement

Learn how to diagnose and fix knocking noise during acceleration in Honda Pilot. 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 engine to cool before opening the oil drain plug or removing spark plugs.

Symptoms

•Knocking noise during acceleration
•Decreased engine performance
•Vibration felt through the cabin
•Possible check engine light illumination
•Unusual exhaust noise

Diagnostic Steps

1
Scan for error codes using an OBD-II scanner to check for any stored trouble codes.
2
Inspect the engine oil level and condition; low or dirty oil can cause knocking.
3
Check for loose or damaged engine mounts that may transmit noise.
4
Inspect the ignition system components (spark plugs, wires, coils) for wear or damage.
5
Examine the fuel system for proper fuel delivery and pressure.
6
Inspect the drive belts and pulleys for wear and misalignment.

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
•Oil drain pan
•Socket set
•Torque wrench
•Spark plug socket
•Belt tension gauge

Parts Required

•Engine oil (0W-20 or 5W-20)
•Oil filter
•Spark plugs (if needed)
•Engine/transmission mounts (if needed)
•Accessory drive belts (if worn)

Related Faults

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Diagnostic Steps

1
Scan for error codes using an OBD-II scanner to check for any stored trouble codes.
2
Inspect the engine oil level and condition; low or dirty oil can cause knocking.
3
Check for loose or damaged engine mounts that may transmit noise.
4
Inspect the ignition system components (spark plugs, wires, coils) for wear or damage.
5
Examine the fuel system for proper fuel delivery and pressure.
6
Inspect the drive belts and pulleys for wear and misalignment.

Solution

1. Preparation

Gather necessary tools and parts.
Park the vehicle on a level surface and engage the parking brake.
Disconnect the battery to ensure safety while working on electrical components.

2. Inspect and Change Engine Oil

Sub-steps:
1. Remove the oil filler cap and check the oil level using the dipstick.
2. If the oil is low or dirty, drain the old oil using an oil drain pan.
3. Replace the oil filter with a new one.
4. Refill the engine with the recommended oil type (e.g., 0W-20 or 5W-20) as per the owner's manual.
5. Run the engine for a few minutes and check for knocking noise.

3. Check and Replace Spark Plugs

Sub-steps:
1. Remove the ignition coils or spark plug wires carefully.
2. Use a spark plug socket to remove the spark plugs.
3. Inspect the spark plugs for wear; replace if needed with OEM or equivalent parts.
4. Reinstall the spark plugs and reconnect the ignition components securely.

4. Inspect Engine and Transmission Mounts

Sub-steps:
1. Visually inspect the engine and transmission mounts for cracks or wear.
2. If any mounts are damaged, use a socket set to remove the bolts securing the mounts.
3. Replace damaged mounts with new ones, ensuring proper alignment.
4. Torque the bolts to the manufacturer’s specifications.

5. Inspect the Drive Belts and Pulleys

Sub-steps:
1. Check the condition of the accessory drive belts for fraying or wear.
2. Use a belt tension gauge to ensure proper tension.
3. Replace any worn belts and ensure all pulleys are aligned and functioning correctly.