Mazda 6 Engine Makes A Ticking Noise

Common Causes of Ticking Noises in Your Mazda 6 Engine and How to Address Them

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Reviewed by
Devin Cabugcal
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 Mazda 6 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 Mazda 6 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 idler pulley fails, there will be a very audible chirping noise from the front of the engine. This is because the idler 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 slip off. If the belt falls off, the accessory that it drives will no longer function. For instance, if the alternator belt idler pulley fails, the alternator may stop functioning. Also if the pulley begins to wobble, allowing slack in the belt, it will make an extremely loud squeaking or screeching noise, especially on cold starts. This is the belt slipping on the crankshaft pulley, and will require belt replacement once the idler pulley is replaced.

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.

Troubleshooting Ticking Noise in a Mazda 6 Engine

When faced with a ticking noise in your Mazda 6 engine, the first step is to check the oil level and pressure, as low oil can significantly contribute to engine noise. Ensure that your engine has the appropriate amount of oil and that it is clean; if not, consider changing the oil and filter. Next, inspect the valve lash adjusters, as infrequent oil changes can lead to their malfunction, resulting in a ticking sound. If these initial checks do not resolve the issue, examine the ignition system for any faults, as misfiring or other ignition problems can also produce similar noises. Lastly, look for any signs of an exhaust leak, which can create a ticking sound as exhaust gases escape. By following this diagnostic approach, you can systematically identify and address the source of the ticking noise, ensuring your Mazda 6 runs smoothly and efficiently. If the noise persists after these checks, it may be time to consult a professional mechanic for a more in-depth evaluation.

What Could Cause a Ticking Noise in a Mazda 6 Engine?

When dealing with a ticking noise in your Mazda 6 engine, it's essential to consider several common problems that could be at play. One of the primary culprits is low oil level or pressure, which can lead to inadequate lubrication of engine components, resulting in a ticking sound. Additionally, issues with the ignition system may manifest as ticking noises, indicating a need for inspection. An exhaust leak is another potential source of the sound, as escaping gases can create a ticking effect. Sticking valve lifters are frequently responsible for this noise, often caused by a lack of maintenance or infrequent oil changes, which can also affect valve lash adjusters. Lastly, a lifter tick, characterized by a noise that correlates with engine speed, may occur without other symptoms. If you encounter this issue, it's advisable to check your oil levels and consider performing a thorough inspection of the ignition and exhaust systems, as well as the valve lifters, to identify and address the root cause effectively.

Why is My Mazda 6 Engine Making a Ticking Noise and What Should I Do?

When your Mazda 6 engine starts making a ticking noise, it’s crucial to address the issue promptly to avoid serious damage and ensure your vehicle's safety. Ignoring this symptom can lead to more significant problems, such as engine wear or failure, which can be costly to repair. One of the first steps you can take is to check the oil level and pressure, as low oil can result in inadequate lubrication, causing components to tick and potentially leading to engine damage. Additionally, consider inspecting the ignition system, as faults here can also contribute to unusual noises. If you suspect an exhaust leak, it’s vital to have the exhaust system checked, as this can not only cause ticking but also affect engine performance and emissions. Regular maintenance is key; by keeping up with oil changes and fluid levels, you can prevent many issues before they escalate. If the noise persists or you’re unsure of the cause, consulting a professional mechanic is advisable to ensure a thorough diagnosis and appropriate repairs. Taking these steps can help maintain your Mazda 6's performance and longevity, making it essential to act quickly when you hear that ticking sound.

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