why is my Honda Accord 10th Generation (2018-2022) making a knocking noise

Honda Accord 8th Generation (2008-2012)

Error Codes

2-4 hours

Time

medium

Difficulty

medium

Severity

3 min read

485 words

Problem Statement

Learn how to diagnose and fix knocking noise in Honda Accord 10th Generation (2018-2022). 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.

Symptoms

•Knocking noise, particularly during acceleration or deceleration
•Noise may vary with engine speed
•Potential vibration felt in the steering wheel or floorboard
•Check engine light may be illuminated (if related to engine components)
•Decreased engine performance or acceleration

Diagnostic Steps

1
Inspect the engine oil level and condition; low or dirty oil can cause knocking.
2
Check for any loose or damaged components in the engine bay, such as heat shields or exhaust brackets.
3
Scan the vehicle’s onboard computer for any diagnostic trouble codes (DTCs) using an OBD-II scanner.
4
Listen for the knocking noise with a stethoscope or mechanic's listening device to localize the source.
5
Perform a visual inspection of the drive belts and pulleys for wear or damage.
6
If applicable, check the condition of the engine mounts for deterioration or failure.

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
•Oil filter wrench
•Drain pan
•Stethoscope (optional)

Parts Required

•Engine oil (0W-20 or as specified)
•Oil filter
•Engine mounts (if needed)
•Drive belts (if needed)

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Diagnostic Steps

1
Inspect the engine oil level and condition; low or dirty oil can cause knocking.
2
Check for any loose or damaged components in the engine bay, such as heat shields or exhaust brackets.
3
Scan the vehicle’s onboard computer for any diagnostic trouble codes (DTCs) using an OBD-II scanner.
4
Listen for the knocking noise with a stethoscope or mechanic's listening device to localize the source.
5
Perform a visual inspection of the drive belts and pulleys for wear or damage.
6
If applicable, check the condition of the engine mounts for deterioration or failure.

Solution

1. Preparation

Gather necessary tools and parts.
Disconnect the battery to ensure safety during repairs.
Allow the engine to cool down if it has been running.

2. Inspect and Change Engine Oil

Sub-steps:
1. Locate the oil drain plug under the vehicle.
2. Place a drain pan under the oil pan and remove the drain plug to let the oil drain out.
3. Replace the oil filter using an oil filter wrench if necessary.
4. Reinstall the drain plug and tighten to the manufacturer’s specification (typically around 20-30 lb-ft).
5. Refill the engine with the manufacturer-recommended oil type (e.g., 0W-20) and check the level with the dipstick.

3. Tighten or Replace Loose Components

Sub-steps:
1. Inspect all accessible components for looseness including exhaust heat shields and brackets.
2. Tighten any loose bolts to the specified torque.
3. If any components are damaged or excessively worn, remove and replace them.

4. Inspect Engine Mounts

Sub-steps:
1. Visually inspect engine mounts for cracks or excessive wear.
2. If mounts are damaged, use a socket set to remove the bolts securing the mounts.
3. Replace with new mounts, ensuring they are torqued to specifications.

5. Address Other Sources of Noise

Sub-steps:
1. If the noise persists, remove the drive belts and inspect pulleys for play or damage.
2. Replace any worn or damaged belts or pulleys as necessary.
3. Reinstall the belts and ensure proper tension.

Tools Required:

OBD-II scanner
Socket set
Torque wrench
Oil filter wrench
Drain pan
Stethoscope (optional)

Parts Required:

Engine oil (0W-20 or as specified)
Oil filter
Engine mounts (if needed)
Drive belts (if needed)

Estimated Repair Time: 2-4 hours

Safety Warnings:

Disconnect the battery before working on electrical systems.
Allow engine to cool before opening the oil drain plug.