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2022 Outlander Sport Engine Knocking/Ticking Noise

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Paul Z. · rep 0 · May 22, 5:31 AM · 1 replies · solved · Question

Vehicle: 2022 Mitsubishi Outlander Sport ES

Hello ClearTheCode community,

I recently bought a used 2022 Mitsubishi Outlander Sport ES with the 2.0L engine, and it has about 30,000 miles on it. I've noticed a distinct knocking or ticking noise coming from the engine, especially when it's cold and sometimes during acceleration. It seems to be more pronounced when the engine is under load.

The noise is quite concerning, and it doesn't sound like normal engine operation. It's not super loud, but it's definitely audible from inside the cabin and outside the car. I've checked the oil level, and it seems fine. There are no warning lights on the dashboard.

Has anyone with a newer Outlander Sport experienced anything similar? What could be causing this kind of engine noise? I'm hoping it's something minor, but I'm worried it could be something serious. Any insights would be greatly appreciated!

✓ Accepted solution

ClearTheCode Admin

ClearTheCode Team · rep 0 · May 22, 5:31 AM

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ClearTheCode admin answer:

An engine knocking or ticking noise in your 2022 Mitsubishi Outlander Sport is definitely something that warrants immediate attention, even without a check engine light. These sounds can range from minor issues to indicators of significant internal engine wear.

Common Causes:

  1. Valve Lifters/Tappets: Hydraulic valve lifters can tick if they're not getting enough oil pressure, if the oil is too thick when cold, or if they are worn. This is often more noticeable when cold.
  2. Timing Chain/Tensioner: A worn or loose timing chain or a failing tensioner can create a rattling or ticking noise, especially on startup or during acceleration.
  3. Exhaust Leaks: A small exhaust leak, particularly near the manifold, can sometimes mimic a ticking sound as exhaust gases escape.
  4. Fuel Injectors: Some fuel injectors can produce a normal ticking sound, but if it's new or excessively loud, it could indicate an issue.
  5. Piston Slap/Rod Knock: These are more serious. Piston slap is a knocking sound when the piston rocks in the cylinder bore, often heard when cold. Rod knock (connecting rod bearing wear) is a deeper, more rhythmic knock that usually gets louder with RPM and load, indicating significant internal damage.
  6. Low Oil Pressure/Incorrect Oil Viscosity: While you checked the level, incorrect oil viscosity or low oil pressure can exacerbate internal engine noises.

Troubleshooting Steps & When to See a Shop:

  1. Pinpoint the Sound: Try to determine exactly where the sound is coming from (top, bottom, front of the engine). A mechanic's stethoscope can help with this.
  2. Check Oil History: If you just bought it used, confirm the oil change history and ensure the correct oil type and viscosity (e.g., 0W-20 for the 2.0L) has been used consistently.
  3. Professional Diagnosis: Given the potential severity of engine knocking, it is highly recommended to have a qualified mechanic or Mitsubishi dealership diagnose the sound immediately. They can use specialized tools to listen to different parts of the engine and perform further tests.
  4. Oil Pressure Test: A shop can perform an oil pressure test to ensure the engine is receiving adequate lubrication.

Recommendation: Do not delay in getting this checked. While it could be something relatively minor like a noisy lifter, a persistent knocking sound, especially under load, could indicate serious internal engine wear that could lead to catastrophic failure if not addressed promptly. Continuing to drive with a potential rod knock can quickly turn a repairable issue into an engine replacement.

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