A Guide to Spark Plug Replacement for the 2009-2015 Nissan Murano
Keep your Murano's V6 engine running smoothly with the correct spark plugs and knowledge.
- The most difficult part of the job is accessing the three rear spark plugs, which requires removing the upper intake manifold.
- NGK and Denso Iridium plugs are considered OEM-equivalent and are highly recommended for performance and longevity.
- Always check the spark plug gap before installation; it should be 0.044 inches.
- Driving with misfiring spark plugs can lead to costly damage to your catalytic converter.
Signs of Failing Spark Plugs in Your Murano
When your Murano's spark plugs start to fail, you'll notice changes in how your vehicle drives. Worn plugs can't create a strong enough spark, leading to incomplete combustion. Symptoms often start small but can become more serious. Look out for a decrease in fuel economy, slow acceleration, a rough idle, or difficulty starting the engine. 🎬 Watch: Common symptoms of bad spark plugs explained A flashing check engine light is a serious sign, often indicating an engine misfire which can damage other expensive components if ignored.
Choosing the Right Aftermarket Spark Plugs
When replacing spark plugs, you have options. While OEM parts are available, high-quality aftermarket brands offer comparable, and sometimes superior, performance. For the 3.5L V6 engine in the 2009-2015 Murano, using the correct type of plug is critical.
Brand Tiers for Your Murano:
- Top Tier (OEM Equivalent): NGK is the original equipment manufacturer for many Nissan vehicles, and their Laser Iridium plugs are often what came in your Murano from the factory. Choosing NGK Iridium plugs is a reliable way to restore original performance and longevity. Denso is another top-tier brand offering excellent Iridium options that meet or exceed OEM specifications.
- Mid-Tier (Quality Alternative): Bosch offers a range of spark plugs, including double iridium and platinum types that are a good fit for the Murano. They are a well-respected brand known for quality engineering and can be a cost-effective alternative to OEM plugs.
- Economy Tier (Budget-Friendly): Champion is a long-standing brand that provides reliable, budget-friendly options. While they may not offer the same longevity as iridium plugs, they are a suitable choice for owners on a tighter budget who still need a quality part.
Pro Tip: Check the Gap
Always verify the spark plug gap before installation, even if the plugs are advertised as "pre-gapped." The correct gap for the 2009-2015 Murano is typically 0.044 inches. An incorrect gap can lead to misfires and poor performance.
The Challenge of Replacing Murano Spark Plugs
Replacing the spark plugs on the Murano's V6 engine is a tale of two halves. The front three plugs (Cylinders 2, 4, 6) are easily accessible. However, the rear three plugs (Cylinders 1, 3, 5) are located under the intake manifold. To access them, the entire upper intake manifold must be removed. 🎬 See how to remove the upper manifold for plug access This makes the job significantly more complex and time-consuming than on many other vehicles. While a skilled DIY mechanic can perform this job in a few hours, it is considered a difficult task. If you are not comfortable removing major engine components, it is best to leave this job to a professional mechanic.
🎬 Watch: Step-by-step spark plug and ignition coil replacement guideWarning: Intake Manifold Removal
When removing the intake manifold, it is crucial to prevent any dirt, debris, or tools from falling into the open intake ports of the engine. Stuffing clean rags into the openings is a common and highly recommended safety measure. Also, it is best practice to replace the intake manifold gasket anytime it is removed to prevent vacuum leaks.
Cost of Spark Plug Replacement
| Part/Service | Estimated Cost |
|---|---|
| New Aftermarket Spark Plugs (Set of 6) | $48 - $180 |
| New OEM Spark Plugs (Set of 6) | $120 - $190 |
| Shop Labor | $383 - $562 |
| Total Professional Replacement | $437 - $730+ |
Frequently Asked Questions (FAQ)
How often should I replace the spark plugs on my 2009-2015 Murano?
Nissan recommends replacing the original iridium spark plugs at around 100,000 to 105,000 miles. However, this interval can be shorter if you experience symptoms of failing plugs.
Is it okay to only replace the three easy-to-reach front spark plugs?
No. All spark plugs should be replaced at the same time. Replacing only half of them will result in uneven engine performance and you will have to repeat the difficult part of the job sooner rather than later.
What tools do I need to change the spark plugs myself?
You will need a socket set, a ratchet with extensions, a torque wrench, a 14mm or 16mm thin-walled spark plug socket, and tools to remove the intake manifold. It is a complex job due to the intake manifold removal.
Can I damage my engine by not changing bad spark plugs?
Yes. Continuously driving with a misfiring engine can cause unburned fuel to enter the exhaust system, potentially damaging the catalytic converter, which is a very expensive repair.
Helpful Videos
Technical Specifications
OEM Part Numbers: 22401-EW61C 22401-JA11B
Engine: 3.5L V6 (VQ35DE) Spark Plug Type: Iridium Spark Plug Gap: 0.044 in (1.1mm) Socket Size: 14mm or 16mm (thin-wall required)
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The information in this article is provided for general reference and educational purposes only. Vehicle specifications, procedures, and part compatibility can vary by production date, trim level, and region. Always consult your vehicle's factory service manual and verify part numbers before purchasing or performing repairs. Safety-critical components such as airbags, seat belts, and braking systems should be installed by a qualified professional.
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