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Engine knocking noise and excessive oil consumption on 2017 Sorento

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Tom H. · rep 0 · May 22, 3:12 AM · 1 replies · solved · Question

Vehicle: 2017 Kia Sorento EX 2.4L

Hey everyone, I'm really concerned about my 2017 Kia Sorento EX, 2.4L GDI engine. Lately, I've noticed a distinct knocking sound coming from the engine, especially when starting cold or accelerating. It's not just a little tick, it's a noticeable knock.

On top of that, I've been adding a quart of oil every 1,000-1,500 miles, which seems way too frequent. I'm worried this could be a major engine issue. Has anyone else experienced this with their Sorento or other Kia models from this era? What did you do about it?

I'm trying to figure out if this is a known problem or if I should brace myself for a huge repair bill. Any advice on what steps to take next would be greatly appreciated. Thanks!

✓ Accepted solution

ClearTheCode Admin

ClearTheCode Team · rep 0 · May 22, 3:12 AM

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ClearTheCode admin answer:

It sounds like you're describing symptoms consistent with a known issue affecting certain Kia and Hyundai GDI engines, specifically the 2.4L and 2.0T engines from that period. The knocking noise and excessive oil consumption are often precursors to significant engine failure.

Here's what you should do:

  1. Check for Recalls/TSBs: Kia has issued several recalls and Technical Service Bulletins (TSBs) related to engine issues, including connecting rod bearing failure and excessive oil consumption. Use your VIN to check the NHTSA website (nhtsa.gov/recalls) or Kia's owner portal for any open recalls or extended warranty campaigns that apply to your specific vehicle.
  2. Document Everything: Keep meticulous records of your oil top-offs, including dates, mileage, and the amount of oil added. This documentation will be crucial if you need to pursue a warranty claim.
  3. Get a Professional Diagnosis: Take your Sorento to a Kia dealership or a trusted independent mechanic specializing in Kia vehicles. They can perform a proper diagnostic, which may include a compression test, leak-down test, and potentially an oil consumption test over a set mileage. They might also check for relevant OBD-II codes, though a mechanical knock might not always trigger a Check Engine Light immediately.
  4. Potential Causes:
    • Connecting Rod Bearing Failure: This is a common cause of knocking in these engines, often due to manufacturing defects or inadequate lubrication.
    • Piston Ring Issues: Worn or stuck piston rings can lead to excessive oil consumption.
    • GDI Carbon Buildup: While less likely to cause a distinct knock, severe carbon buildup can affect engine performance and efficiency.
  5. When to See a Shop: You should see a shop immediately. Continuing to drive with a significant engine knock and high oil consumption can lead to catastrophic engine failure, which is far more expensive to repair than addressing the issue early. If your Check Engine Light illuminates with codes like P1326 (Knock Sensor Detection System), stop driving and have it towed to the dealership, as this code often indicates a severe internal engine issue covered by extended warranties.
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