FAULTBASE
Error CodesASKCars
© 2026 FAULTBASE
All rights reserved.
v2.0.0 • Production
ContactPrivacyImpressum
Why is my Kia Sorento Fourth Generation (2021-present) making a knocking noise? - Kia Sorento
Home/Cars/Kia/Sorento/Fourth Generation (2021-present)/Why is my Kia Sorento Fourth Generation (2021-present) making a knocking noise?

Why is my Kia Sorento Fourth Generation (2021-present) making a knocking noise?

Kia Sorento Fourth Generation (2021-present)

Error Codes
medium
Difficulty
medium
Severity
Navigation
ProblemSolution
ProblemSolution
4 min read
660 words

Problem Statement

# Diagnosing and Repairing Knocking Noise in a 2021-Present Kia Sorento

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

Additional Information

Difficulty
medium
Severity
medium

Related Faults

Loading...

Share this solution

Comments

Sign in to share your thoughts

Sign In

No comments yet

Be the first to share your thoughts

Back to Generation

Diagnosing and Repairing Knocking Noise in a 2021-Present Kia Sorento

Symptoms
  • Knocking or tapping noise when the engine is running
  • Noise may increase with acceleration or load
  • Noise may be more prominent at idle or low RPM
  • Potential loss of power or performance
  • Possible vibrations felt in the cabin or steering wheel
Diagnostic Steps
Step 1: Preliminary Inspection
  1. Visual Inspection: Open the hood and inspect the engine bay for any loose components, disconnected hoses, or signs of fluid leaks.
  2. Listen for Noise Location: With the engine running, carefully listen to identify the noise's location. Use a mechanic's stethoscope or a long screwdriver (held to your ear and placed on different engine components) to isolate the sound.
  3. Check Engine Light: Look for any diagnostic trouble codes (DTC) using an OBD-II scanner.
Step 2: Check for Common Causes
  1. Engine Components:
    • Inspect the timing chain/belt for wear or misalignment.
    • Check the oil level and condition; low oil can lead to knocking sounds.
    • Examine the valve lifters and rockers for wear or malfunction.
  2. Suspension and Steering:
    • Check for worn suspension components (e.g., struts, bushings) that may cause knocking when driving.
    • Inspect the steering components for play or wear.
  3. Exhaust System:
    • Inspect the exhaust system for loose heat shields or mounting brackets that may cause knocking sounds.
  4. Transmission:
    • Check for transmission issues or low transmission fluid that might cause noise under load.
Tools Required
  • OBD-II Scanner
  • Mechanic’s stethoscope or long screwdriver
  • Socket set and wrenches
  • Torque wrench
  • Oil filter wrench (if oil change is needed)
  • Jack and jack stands (for undercarriage inspection)
  • Suspension tool set (if suspension components are to be inspected)
Repair Instructions
Step 1: Engine Noise Repair

  1. Oil Change (if oil is low or dirty):

    • Gather required tools: oil filter wrench, socket set, new oil filter, and the correct type and amount of engine oil.
    • Raise the vehicle using a jack and secure it with jack stands.
    • Remove the drain plug and allow oil to drain completely.
    • Replace the oil filter.
    • Reinstall the drain plug and refill the engine with new oil.

  2. Timing Chain/Belt Inspection:

    • Remove any components obstructing access to the timing chain/belt.
    • Inspect for wear and tension; if there's slack, replace the timing chain/belt according to manufacturer specifications.
    • If the timing assembly is damaged, a full replacement may be necessary.

  3. Valve Lifters and Rockers:

    • Remove the valve cover to access the lifters and rockers.
    • Inspect for wear or damage; replace any faulty components.
    • Reassemble and torque the valve cover according to specifications.
Step 2: Suspension and Steering Repair

  1. Suspension Component Replacement:

    • Raise the vehicle and remove the wheel if necessary to access suspension components.
    • Inspect components (bushings, struts, sway bars) for wear.
    • Replace any faulty components with new OEM or quality aftermarket parts.
    • Reinstall the wheel and lower the vehicle.

  2. Steering Component Adjustment:

    • Inspect the steering system for any loose parts.
    • Tighten any loose bolts or replace any worn components.
Step 3: Exhaust Repair
  1. Exhaust System Inspection:
    • Inspect all exhaust components, particularly the heat shields and mounting brackets.
    • Tighten or replace any loose or damaged components.
Step 4: Test Drive
  1. Reassemble and Test: After making repairs, reassemble any removed parts and conduct a test drive to verify that the knocking noise has been resolved.
  2. Listen for Changes: Pay attention to any changes in noise or performance during the test drive.
Conclusion

If the knocking noise persists after following these steps, further diagnostic work may be required to check for internal engine issues, such as bearing wear or internal component failure. In such cases, it is advised to consult a professional mechanic for advanced diagnosis and repair.