Try a piston soak. The 2.4L engines can be bad for getting stuck piston rings.

https://bobistheoilguy.com/forums/threads/2015-kia-optima-lx-qt-300-miles-oil-burned-solved-fixed.351115/page-3

Easy to do at home and pretty cheap. Follow up with using only Valvoline Restore & Protect.

 

Imho, if you are burning so much oil you don't even need oil changes. Catalytic convertor may fail soon. Is it really smoking bad out tailpipe?
If you are willing to keep adding oil, then start adding Valvoline Restore and Protect oil, if rings are stuck the oil will eventually free them up and if that's the case you will see significant drop or even stop in oil consumption. It may be worth trying.

 

No smoke at all

 

All the 2.4L are crap. Take it to a dealer it maybe one of the recalled ones. If so it'll be replaced. Be sure its not low when you do!!

 

To be fair they only turn to junk if you neglect them (aside from the ones that failed due to the recall).

 

I found on You tube how to un stick piston rings did it and no more losing oil. Part of the problem is with the GDI feature

Naples Fl
2013 Sportage 2.4 theta II

 

Excessive Oil Consumption
One of the most prevalent problems reported by Kia 2.4L engine owners is excessive oil consumption. Many drivers have noticed that their vehicles require frequent oil top-ups, often leading to concerns about engine health. This issue can stem from several factors, including:

• Piston ring wear
• Valve seal degradation
• PCV (Positive Crankcase Ventilation) system malfunctions

Another significant issue with the Kia 2.4L engine is engine knocking or abnormal noise during operation. This can be attributed to:

• Low oil levels
• Worn bearings
• Improper fuel quality

Engine knocking can indicate serious internal damage, and ignoring these sounds can result in catastrophic engine failure.
Timing Chain Problems
The timing chain in the Kia 2.4L engine is crucial for synchronizing the engine’s components. However, some owners have reported issues such as:

• Timing chain stretch
• Timing chain tensioner failure

These problems can lead to misalignment of engine components, resulting in poor performance and potential engine damage.
Overheating Issues
Overheating is another critical problem that can affect the Kia 2.4L engine. Common causes include:

• Coolant leaks
• Faulty water pump
• Clogged radiator

Overheating can cause severe damage to engine components, including warped cylinder heads and blown head gaskets.
Table of Symptoms and Consequences

Symptom	Potential Consequence
Excessive oil consumption	Engine wear and potential failure
Engine knocking	Severe internal damage
Timing chain issues	Engine misalignment and performance loss
Overheating	Warped heads and blown gaskets

Conclusion
The Kia 2.4L engine, while initially a promising option for many drivers, has been plagued by a range of issues that can lead to significant problems down the line. Awareness of these issues is essential for owners to maintain their vehicles effectively and avoid costly repairs. Understanding the symptoms and consequences of these problems can help drivers make informed decisions about their vehicle’s maintenance and longevity.

 

I have a 2.4 L theta engine 2013 Sportage. It on the potential knock- and blow-up engine list. One of the biggest problem was after the engine was machined they were not properly cleaned. Jhe junk restricted oil flow, bearings would wear and then BANG.

Naples Fl
2013 Sportage 2.4L Theta 11