2014 Mazda CX-9 Is Leaking Oil

Identifying the Causes of Oil Leaks in Your 2014 Mazda CX-9 and How to Address Them Effectively

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Reviewed by
Bo Fader
Written by RepairPal Car Genius
Updated January 14, 2025
0%
80% chance it's the
Oil System Components
0%
20% chance it's the
Engine Gaskets
The most common reasons a 2014 Mazda CX-9 is leaking oil are oil system component failure and leaking engine gaskets.
  • Oil System Components: A worn or damaged oil pump or filter can lead to low oil pressure, resulting in inadequate lubrication and potential engine damage.
  • Engine Gaskets: A worn or damaged engine gasket can lead to oil or coolant leaks, resulting in engine overheating or loss of lubrication.
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 2014 Mazda CX-9 is leaking oil?

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.

Oil pans don't wear out or break like other parts, they generally only need to be replaced because of external damage from an accident or an improperly tightened drain plug. The main symptom you will experience is an oil leak underneath the engine of your car. The oil that leaks from a damaged oil pan will range from dark brown to dark black. If the leak is large enough or occurs for long enough the oil level will be low enough to turn the oil pressure or low oil level warning light on.

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 and diagnostic steps for an oil leak in a 2014 Mazda CX-9?

When tackling an oil leak in your 2014 Mazda CX-9, it's essential to adopt a methodical diagnostic approach. Begin with a thorough visual inspection under the vehicle to identify any obvious signs of oil pooling or dripping. Next, monitor your oil levels regularly; a significant drop can indicate a leak that needs immediate attention. Inspect the gaskets and seals for wear, as these components are common culprits in oil leaks. Pay close attention to the oil pan and drain plug, ensuring they are secure and free from cracks or damage. The oil filter should also be checked for proper installation and any signs of leakage. Additionally, examine the oil cooler lines and the valve cover gasket, as these areas can also contribute to oil seepage. By following this structured diagnostic process, you can effectively pinpoint the source of the leak and take the necessary steps to resolve the issue, ensuring your vehicle runs smoothly and efficiently.

What are the common causes of oil leaks in a 2014 Mazda CX-9?

When diagnosing oil leaks in a 2014 Mazda CX-9, it's crucial to understand the common culprits that may be at play. One frequent issue is the deterioration of the oil pan gasket, which can wear out over time, leading to leaks. Similarly, the valve cover gasket, which seals the valve cover to the cylinder head, can also fail, resulting in oil seeping out. Another potential source of leaks is the oil filter housing gasket; if this component is compromised, it can allow oil to escape. Additionally, the rear main seal, located at the back of the engine, is known to develop leaks as it ages, which can be a more challenging repair. Lastly, don’t overlook the oil cooler lines, as leaks in these lines can also contribute to oil loss. Addressing these issues promptly is essential to prevent further engine damage and maintain the vehicle's performance, making regular inspections and maintenance key for any DIY enthusiast.

How urgent is it to address the oil leak in my 2014 Mazda CX-9?

Addressing an oil leak in your 2014 Mazda CX-9 is not just a matter of routine maintenance; it is an urgent issue that requires immediate attention. An oil leak can lead to a significant loss of engine lubrication, which increases friction and heat, potentially resulting in severe engine damage. Furthermore, neglecting this problem can cause the oil level to drop dangerously low, leading to engine overheating and eventual failure. The safety risks are also considerable, as leaking oil can drip onto hot engine components, creating a fire hazard. Additionally, allowing oil to leak can have detrimental effects on the environment, as it can contaminate soil and water sources. Therefore, it is crucial to act swiftly to repair any oil leaks in your Mazda CX-9 to protect your vehicle's integrity, ensure your safety, and minimize environmental harm.

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2014 Mazda CX-9 Oil Leak Causes & Repairs | RepairPal