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How long do Ford Explorer spark plugs last?

The spark plugs in a Ford Explorer typically last between 60,000 to 100,000 miles, depending on driving conditions and maintenance. However, it's important to regularly inspect and replace spark plugs as needed to ensure optimal engine performance and fuel efficiency.


Understanding Spark Plug Lifespan


Spark plugs are essential components in the ignition system of a Ford Explorer, responsible for igniting the air-fuel mixture in the engine's cylinders. Over time, the electrodes on the spark plugs can wear down, affecting the spark quality and leading to decreased engine performance, reduced fuel economy, and even engine misfiring.


The lifespan of Ford Explorer spark plugs can vary depending on several factors:



  • Driving Conditions: Vehicles driven in harsher environments, such as frequent towing, off-road use, or heavy-duty applications, may require more frequent spark plug replacement.

  • Maintenance History: Regular tune-ups and spark plug inspections can help extend the lifespan of the plugs, while neglecting maintenance can lead to premature wear.

  • Spark Plug Type: Some spark plug materials, such as platinum or iridium, can last longer than standard copper plugs.

  • Engine Modifications: Modifications that increase engine power or compression can also shorten the lifespan of spark plugs.


It's generally recommended to replace the spark plugs in a Ford Explorer every 60,000 to 100,000 miles, or as specified in the vehicle's maintenance schedule. Regular inspections and replacements can help ensure optimal engine performance and fuel efficiency.


Signs of Worn Spark Plugs


There are several signs that the spark plugs in a Ford Explorer may need to be replaced, including:



  • Rough Idling: Worn spark plugs can cause the engine to idle roughly or unevenly.

  • Decreased Fuel Economy: Faulty spark plugs can lead to incomplete combustion, reducing fuel efficiency.

  • Engine Misfiring: Misfiring or hesitation during acceleration can indicate a problem with the spark plugs.

  • Check Engine Light: The vehicle's onboard diagnostics system may trigger a check engine light if it detects an issue with the spark plugs.


If you notice any of these signs, it's important to have the spark plugs inspected and replaced as soon as possible to prevent further damage to the engine.

Kevin's Auto

Kevin Bennett

Company Owner

Kevin Bennet is the founder and owner of Kevin's Autos, a leading automotive service provider in Australia. With a deep commitment to customer satisfaction and years of industry expertise, Kevin uses his blog to answer the most common questions posed by his customers. From maintenance tips to troubleshooting advice, Kevin's articles are designed to empower drivers with the knowledge they need to keep their vehicles running smoothly and safely.