2020 Mazda 3 Engine Makes A Ticking Noise

Common Causes of Ticking Noises in Your 2020 Mazda 3 Engine and How to Resolve Them

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Reviewed by
Andrew Hajjar
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 2020 Mazda 3 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 2020 Mazda 3 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 2020 Mazda 3?

When faced with a ticking noise in the engine of your 2020 Mazda 3, start by checking the oil level, as insufficient oil can lead to increased friction and noise. Next, assess the oil quality; if it appears dirty or contaminated, consider an oil change to restore proper lubrication. Pay close attention to the sound's origin, as this can help you identify whether the issue stems from the engine itself or external components. Inspect for any loose parts, such as belts or heat shields, which may be vibrating and causing the noise. Additionally, examine the exhaust system for leaks or damage that could contribute to unusual sounds. Utilizing an OBD-II scanner can also be beneficial, as it may reveal error codes that point to specific engine issues. If these initial steps do not resolve the problem, it may be time to consult a professional mechanic for a more detailed diagnosis. By following this structured approach, you can effectively narrow down the potential causes of the ticking noise and take appropriate action.

What are the common causes of a ticking noise in the engine of a 2020 Mazda 3?

When diagnosing a ticking noise in the engine of your 2020 Mazda 3, it's crucial to consider several common issues that you might be able to address yourself. One of the primary culprits is low engine oil, which can lead to increased friction among engine components, resulting in a noticeable ticking sound. Regularly checking and maintaining your oil levels can help prevent this problem. Another potential cause is worn valve lifters; if you suspect this might be the issue, you can inspect the lifters for wear and consider replacing them if necessary. Additionally, faulty fuel injectors can create a ticking noise, so examining their functionality may be beneficial. Loose belts or pulleys can also contribute to the sound, and you can easily check their tension and alignment. Lastly, an exhaust leak near the engine can produce a ticking noise, particularly during acceleration. If you identify any of these issues, addressing them promptly can help maintain your vehicle's performance and prevent further damage. However, if the source of the noise remains unclear, consulting a professional mechanic is advisable for a thorough diagnosis.

How urgent is it to address the ticking noise in the engine of a 2020 Mazda 3?

Addressing a ticking noise in the engine of your 2020 Mazda 3 should be treated with urgency, as neglecting this symptom can lead to serious consequences. Early detection is crucial; identifying the source of the noise can prevent minor issues from escalating into major engine problems that may require costly repairs. Common causes of a ticking noise include low oil levels, which can lead to inadequate lubrication of engine components, or worn-out parts that may compromise engine performance. Additionally, issues with the valve train can also manifest as ticking sounds, indicating a need for immediate attention. Ignoring these noises not only risks further damage but can also affect the safety and reliability of your vehicle on the road. For DIY enthusiasts, while it may be tempting to troubleshoot the issue independently, it is advisable to consult a qualified mechanic for a thorough inspection to accurately diagnose the problem. This proactive approach ensures that you maintain the health of your engine and avoid potential safety hazards, making it essential to address any ticking noises promptly.

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