2015 Mazda CX-9 Engine Makes A Ticking Noise

Common Causes of Ticking Noises in Your 2015 Mazda CX-9 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 2015 Mazda CX-9 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 2015 Mazda CX-9 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 potential causes of a ticking noise in the engine of a 2015 Mazda CX-9, and how should I diagnose them?

When faced with a ticking noise in the engine of your 2015 Mazda CX-9, a systematic diagnostic approach can help you identify the underlying issue effectively. Start by checking the engine oil level, as low oil can lead to insufficient lubrication, resulting in noise from engine components. If the oil level is adequate, listen carefully to the noise's timing; noting whether it occurs during acceleration or at idle can provide valuable clues. Next, perform a visual inspection of critical components such as the valve lifters and timing chain for any signs of wear or damage. If these initial checks do not reveal the problem, consider the possibility of an exhaust leak, which can also produce a ticking sound. Additionally, ensure that you are using the correct fuel octane rating, as spark knock can contribute to engine noise. If you are still unable to determine the cause, consulting a qualified mechanic is advisable, as they can utilize specialized tools for a more thorough diagnosis. By following this structured approach, you can effectively narrow down the potential causes of the ticking noise and take appropriate action to resolve the issue.

What could be causing the ticking noise in the engine of a 2015 Mazda CX-9?

When diagnosing the ticking noise in the engine of a 2015 Mazda CX-9, it's essential to consider several common problems that could be at play. One of the primary culprits is low engine oil, which can lead to insufficient lubrication and result in ticking sounds. Regularly checking the oil level and its condition can help prevent this issue. Additionally, valve train problems, such as worn lifters or valves, can also produce a ticking noise, making it crucial to inspect these components thoroughly. Another potential cause is related to the timing chain or belt; if these parts are not properly tensioned or are worn out, they can create similar sounds. Exhaust leaks can further complicate the diagnosis, as they may mimic engine noises, so it's wise to check the exhaust system for any leaks. Lastly, spark knock, which occurs due to improper fuel octane or ignition timing, can also manifest as a ticking sound. By systematically evaluating these common issues, you can better identify the source of the noise and take appropriate action, whether that involves a DIY fix or consulting a qualified mechanic.

How urgent is it to address the ticking noise in the engine of a 2015 Mazda CX-9?

Addressing a ticking noise in the engine of a 2015 Mazda CX-9 is a matter of urgency that should not be overlooked. Early detection is crucial, as this noise can signal underlying issues such as low oil levels, worn components, or valve train problems. Ignoring these symptoms can lead to more severe complications, including engine failure and costly repairs, which can significantly impact your vehicle's performance and safety. For DIY enthusiasts, it is essential to assess the situation promptly; checking oil levels and inspecting for any visible wear can be a good starting point. However, if the noise persists, consulting a qualified mechanic is advisable to ensure a thorough diagnosis and appropriate repairs. By addressing the ticking noise early, you not only safeguard your vehicle's reliability but also enhance your safety on the road.

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