my Honda CR-V Fifth Generation (2017-2022) has a knocking sound coming from the engine

Honda CR-V 6th Gen (2023-Present)

Error Codes

2-4 hours

Time

medium

Difficulty

high

Severity

3 min read

444 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 sound in Honda CR-V (2017-2022). 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 the engine to cool before draining oil or working on the engine components.

Symptoms

•Knocking or tapping noise from the engine compartment
•Loss of power during acceleration
•Engine misfires or rough idling
•Check engine light illuminated
•Decreased fuel efficiency
•Oil pressure warning light (if present)

Diagnostic Steps

1
Scan for error codes using an OBD-II scanner to identify any stored trouble codes.
2
Check the engine oil level and condition; look for signs of contamination or low levels.
3
Inspect the engine mounts for wear or damage that may contribute to noise.
4
Listen to the engine using a mechanic's stethoscope to locate the source of the knocking sound.
5
Perform a compression test on each cylinder to check for internal engine issues.
6
Inspect the timing chain/belt and tensioner for wear or 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
•Socket set
•Oil filter wrench
•Mechanic's stethoscope
•Compression tester
•Torque wrench

Parts Required

•Engine oil (as specified in the owner’s manual)
•Oil filter
•Timing belt/chain (if necessary)
•Connecting rod bearings (if necessary)

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Diagnostic Steps

1
Scan for error codes using an OBD-II scanner to identify any stored trouble codes.
2
Check the engine oil level and condition; look for signs of contamination or low levels.
3
Inspect the engine mounts for wear or damage that may contribute to noise.
4
Listen to the engine using a mechanic's stethoscope to locate the source of the knocking sound.
5
Perform a compression test on each cylinder to check for internal engine issues.
6
Inspect the timing chain/belt and tensioner for wear or misalignment.

Solution

1. Preparation

Gather tools and parts needed for the repair.
Ensure the vehicle is parked on a flat surface and set the parking brake.
Disconnect the battery to ensure safety while working on electrical components.

2. Change Engine Oil and Filter

Sub-steps:
1. Drain old engine oil using an oil drain pan; remove the oil drain plug with a socket wrench (torque to manufacturer's specifications upon reinstallation).
2. Replace the oil filter using an oil filter wrench; lubricate the new filter's rubber gasket with new oil before installing.
3. Reinstall the drain plug and refill the engine with the recommended oil type and quantity (refer to the owner’s manual).

3. Inspect and Replace Engine Components

Sub-steps:
1. Check components such as the timing chain/belt and tensioner. Replace if worn or damaged.
2. If the knocking persists, consider checking the connecting rod bearings; remove the oil pan for access.
3. Inspect and replace any damaged bearings, ensuring proper torque settings are followed during reassembly.

4. Reassemble and Test

Sub-steps:
1. Reinstall any components that were removed for access.
2. Reconnect the battery and start the engine to test for noise.
3. Monitor engine performance and listen for any remaining knocking sounds.

Tools Required:

OBD-II scanner
Socket set
Oil filter wrench
Mechanic's stethoscope
Compression tester
Torque wrench

Parts Required:

Engine oil (as specified in the owner’s manual)
Oil filter
Timing belt/chain (if necessary)
Connecting rod bearings (if necessary)

Estimated Repair Time: 2-4 hours

Safety Warnings:

Disconnect the battery before working on electrical systems.
Allow the engine to cool before draining oil or working on the engine components.