why does my Honda Accord make a knocking noise during acceleration?

Honda Accord 10th Generation (2018-2022)

Error Codes

2-4 hours

Time

medium

Difficulty

medium

Severity

3 min read

543 words

Problem Statement

Learn how to diagnose and fix knocking noise during acceleration in Honda Accord. 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 battery before working on electrical systems.
•Allow engine to cool before opening any components.

Symptoms

•Knocking noise that increases with acceleration
•Possible vibration felt through the steering wheel or floor
•Loss of power during acceleration
•Engine misfires or rough running
•Check engine light may illuminate

Diagnostic Steps

1
Scan for error codes using an OBD-II scanner to identify any underlying issues.
2
Inspect engine mounts for wear or damage that could cause knocking sounds.
3
Check the condition of the spark plugs and ignition system for misfiring.
4
Inspect the drive belts for wear or looseness that may cause noise.
5
Examine the suspension components for any play or wear that could mimic engine noise.
6
Test the oil level and condition; low or dirty oil can lead to engine knocking.

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
•Socket set
•Torque wrench
•Jack
•Jack stands
•Spark plug socket
•Belt tensioner tool

Parts Required

•Engine mounts (if damaged)
•Spark plugs
•Drive belts (if worn)

Related Faults

Share this solution

Comments

No comments yet

Be the first to share your thoughts

Back to Generation

Diagnostic Steps

1
Scan for error codes using an OBD-II scanner to identify any underlying issues.
2
Inspect engine mounts for wear or damage that could cause knocking sounds.
3
Check the condition of the spark plugs and ignition system for misfiring.
4
Inspect the drive belts for wear or looseness that may cause noise.
5
Examine the suspension components for any play or wear that could mimic engine noise.
6
Test the oil level and condition; low or dirty oil can lead to engine knocking.

Solution

1. Preparation

Gather tools and parts required.
Ensure the vehicle is on a level surface and engage the parking brake.
Disconnect the battery to prevent electrical issues during repair.

2. Inspect and Replace Engine Mounts

Tools Required: Socket set, jack, jack stands, torque wrench
Sub-steps:
1. Raise the vehicle using a jack and secure it with jack stands.
2. Locate the engine mounts and visually inspect for cracks or wear.
3. Remove the bolts securing the damaged engine mount using a socket.
4. Replace the old mount with a new one, ensuring proper alignment.
5. Torque the mounting bolts to the manufacturer’s specifications (usually specified in a service manual).

3. Replace Spark Plugs

Tools Required: Socket set, spark plug socket, torque wrench
Sub-steps:
1. Remove the ignition coil or distributor cap (if applicable).
2. Unscrew and remove the old spark plugs using a spark plug socket.
3. Inspect spark plug condition; replace with new spark plugs that meet OEM specifications.
4. Gap the new spark plugs as per specifications and install them.
5. Reattach the ignition coil or distributor cap.

4. Check and Replace Drive Belts

Tools Required: Socket set, belt tensioner tool (if applicable)
Sub-steps:
1. Inspect the drive belts for cracks, fraying, or looseness.
2. If damaged, loosen the tensioner and remove the old belt.
3. Install a new belt, ensuring it is routed correctly around pulleys.
4. Adjust tension according to manufacturer specifications.