my Honda Accord 10th Generation (2018-2022) has a knocking noise from the engine

Honda Accord 8th Generation (2008-2012)

Error Codes

2-4 hours

Time

medium

Difficulty

medium

Severity

3 min read

545 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 battery before working on electrical systems.
•Allow engine to cool before opening oil drain plug or inspecting components.

Symptoms

•Knocking or tapping noise from the engine compartment
•Decreased engine performance or power loss
•Check engine light illuminated
•Rough idle or engine misfires
•Unusual vibration felt through the chassis

Diagnostic Steps

1
Scan for error codes using an OBD-II scanner to identify any underlying issues.
2
Check engine oil level and condition; low or dirty oil can cause knocking.
3
Inspect the timing chain/belt for wear or improper tension.
4
Examine the engine mounts for damage or excessive wear.
5
Perform a listening test using a mechanic's stethoscope to localize the noise.
6
Check for loose or damaged components such as the exhaust or heat shields.

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
•Oil filter wrench
•Torque wrench
•Pry bar
•Oil catch pan

Parts Required

•Engine oil (0W-20 or 5W-20)
•Oil filter
•Timing chain/belt (if necessary)
•Engine mounts (if necessary)

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Diagnostic Steps

1
Scan for error codes using an OBD-II scanner to identify any underlying issues.
2
Check engine oil level and condition; low or dirty oil can cause knocking.
3
Inspect the timing chain/belt for wear or improper tension.
4
Examine the engine mounts for damage or excessive wear.
5
Perform a listening test using a mechanic's stethoscope to localize the noise.
6
Check for loose or damaged components such as the exhaust or heat shields.

Solution

1. Preparation

Ensure the vehicle is parked on a level surface and the engine is cool.
Gather tools and parts needed for the repair.
Disconnect the negative battery terminal to ensure safety.

2. Inspect and Change Engine Oil

Sub-steps:
- Remove the oil drain plug using a socket wrench and drain the old oil into a suitable container.
- Replace the oil filter using an oil filter wrench.
- Reinstall the drain plug and tighten to manufacturer's specifications (typically around 20 lb-ft).
- Add new engine oil as per the manufacturer's specifications (usually 0W-20 or 5W-20 for Honda).
Tools Required: Socket set, oil filter wrench, oil catch pan.

3. Inspect Timing Chain/Belt

Sub-steps:
- Remove any necessary covers to access the timing chain or belt.
- Check for wear, tension, and alignment; replace if damaged.
- Reinstall covers and ensure all bolts are torqued to specifications.
Tools Required: Torque wrench, socket set.

4. Examine Engine Mounts

Sub-steps:
- Visually inspect engine mounts for cracks or deformation.
- Use a pry bar to check for excessive movement or wear.
- Replace any damaged mounts; ensure all mounting bolts are tightened to specifications.
Tools Required: Pry bar, socket set.

5. Reassemble and Test

Sub-steps:
- Reconnect the negative battery terminal.
- Start the engine and listen for any persistent knocking noises.
- If noise persists, further disassembly may be required to inspect internal components.
Tools Required: None extra for this step.