2021 Kia K5 Engine Makes A Ticking Noise

Common Causes of Ticking Noises in Your 2021 Kia K5 Engine and How to Address Them

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Reviewed by
Bo Fader
Written by RepairPal Car Genius
Updated January 14, 2025
0%
12% chance it's the
Exhaust Leak
0%
88% chance it's
Something else
The most common reasons a 2021 Kia K5 engine makes a ticking noise are low oil level or pressure, an issue with the ignition system, or an exhaust leak.
  • Exhaust Leak: A damaged exhaust manifold or a loose connection in the exhaust system can cause an exhaust leak, resulting in increased noise and potential loss of engine power.
Proper diagnosis will determine the exact cause of your symptom, saving you money on unnecessary repairs. The diagnostic experts at RepairPal Certified shops have the right tools and experience to solve any symptom.

How much does it cost to fix a 2021 Kia K5 engine makes a ticking noise?

Common Repairs

The total repair cost will vary based on the condition of your vehicle and the number of repairs needed to fix your symptom. Proper diagnosis will save you money by finding the exact repairs needed to fix your car right the first time.

If the drive belt tensioner fails, there will be a very audible chirping, grinding, or rattling noise from the front of the engine. This is because the tensioner pulley bearing is no longer smooth, and rotating causes metal to grind at high speeds. If it is not changed immediately, there is a chance it will become dislodged, or allow the drive belt to lose tension, or break. If the belt falls off, the accessory that it drives will no longer function. Also, if the tensioner spring fails, allowing slack in the belt, it may make an extremely loud squeaking or screeching noise combined with a rattle as the tensioner bounces back and forth under load. The squealing noise is the belt slipping on the crankshaft pulley, and will require belt replacement once the belt tensioner is replaced.

An engine leaking oil does not always make a puddle on the ground. A burning smell may be noticed from the front of the vehicle after driving. This is because engine oil leaks may fall onto hot engine components, especially the exhaust manifold, and burn off before making it to the ground. This poses a risk to the engine because the leak going unnoticed may deplete the engine oil reserve, and lead to an oil starvation issue. Some engine oil leaks only occur while the engine is running, so the leak may be larger than the small spot on the ground makes it seem.

Noises can be accompanied by many annoying or worrisome sensations. Consider the noise of grinding brakes, the noise sounds much like the brake pedal and steering wheel feel. This is important, as random noises can be difficult to replicate without knowing when the sound occurs, what must be done to make the sound, and what sound it is. Any professional technician can replicate and diagnose most noises, but to ensure the vehicle is more quickly diagnosed, make sure you tell your technician these three pieces of information.

The engine oil pressure warning light will come on if the engine oil pressure is low, or if the oil pressure sensor is faulty. In either case, engine power may be reduced significantly. The check engine light may also illuminate, and an on-board diagnostic (OBD) trouble code will be stored in the vehicle's computer.

What are the initial diagnostic steps to take for a ticking noise in the engine of a 2021 Kia K5?

When faced with a ticking noise in the engine of your 2021 Kia K5, it's essential to adopt a systematic diagnostic approach to identify the issue effectively. Start by checking the engine oil level, as low or dirty oil can significantly contribute to engine noise. Next, inspect visible engine components for any signs of wear or damage, particularly the timing belt and valve train, as these can be common culprits. Listening closely to the engine, perhaps with a stethoscope, can help you pinpoint the noise's source, allowing for a more focused investigation. Additionally, examine the engine for any loose parts that may be causing the ticking; securing these can often resolve the problem. Finally, using an OBD-II scanner to check for error codes can provide further insights into potential issues, guiding your next steps in the diagnostic process. By following this structured approach, you can effectively narrow down the cause of the ticking noise and take appropriate action to address it.

What are the common causes of a ticking noise in the engine of a 2021 Kia K5?

When diagnosing a ticking noise in the engine of your 2021 Kia K5, it's crucial to consider several common issues that you might be able to address yourself. One of the primary culprits could be low engine oil, which can lead to increased friction among engine components, resulting in that distinctive ticking sound. Regularly checking and maintaining proper oil levels is essential for engine health. Another potential cause is worn-out lifters; if you notice a ticking noise that seems to correlate with engine speed, this could indicate that the lifters are not functioning correctly. Additionally, inspect the timing belt or chain, as a damaged or improperly tensioned belt can create noise when it interacts with other parts of the engine. An exhaust leak is another possibility, often manifesting as a ticking sound, particularly noticeable when the engine is running. Lastly, issues with the valve train, such as worn components or improper adjustments, can also lead to ticking noises. By understanding these common problems, you can take the first steps toward diagnosing and potentially resolving the issue before seeking professional help.

How urgent is it to address the ticking noise in the engine of a 2021 Kia K5?

Addressing a ticking noise in the engine of a 2021 Kia K5 is a matter of urgency that should not be overlooked. Early detection is crucial, as the ticking could indicate underlying issues such as low oil levels, worn components, or valve problems, which, if left unaddressed, can escalate into more severe engine damage. Ignoring this noise not only risks costly repairs but also compromises the safety and reliability of your vehicle. A ticking engine can lead to catastrophic failures while driving, posing a significant safety hazard. Therefore, it is advisable to consult a qualified mechanic for a thorough inspection to accurately diagnose the cause of the noise and recommend appropriate repairs. By taking prompt action, you can safeguard your vehicle's performance and longevity, ensuring a safer driving experience.

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2021 Kia K5 Engine Ticking Noise: Causes & Repairs