What mileage do you change spark plugs on a Subaru?
Spark plugs are a critical component in a Subaru's engine, and knowing when to change them is essential for maintaining optimal performance and fuel efficiency. As a general rule, Subaru recommends changing spark plugs every 60,000 to 100,000 miles, depending on the specific model and driving conditions.
Factors Affecting Spark Plug Lifespan
The recommended spark plug change interval for a Subaru can vary based on several factors:
- Driving Conditions: Vehicles used for towing, hauling heavy loads, or driven in extreme temperatures or dusty environments may require more frequent spark plug changes.
- Engine Type: Subaru's turbocharged engines, such as those found in the WRX and STI models, may need spark plugs changed more often than naturally aspirated engines.
- Fuel Quality: Using lower-quality fuel can lead to increased spark plug fouling, requiring more frequent replacements.
- Maintenance History: Proper maintenance, such as regular oil changes and tune-ups, can help extend the lifespan of spark plugs.
It's important to consult your Subaru's owner's manual or speak with a qualified mechanic to determine the optimal spark plug change interval for your specific vehicle and driving conditions.
Signs It's Time to Change Spark Plugs
Even if you haven't reached the recommended mileage, there are several signs that may indicate it's time to change your Subaru's spark plugs:
- Decreased Fuel Efficiency: Worn spark plugs can cause the engine to run less efficiently, leading to a noticeable drop in fuel economy.
- Rough Idling or Misfiring: Faulty spark plugs can cause the engine to misfire, resulting in a rough idle or hesitation during acceleration.
- Difficulty Starting: Worn spark plugs can make it harder for the engine to start, especially in cold weather.
- Check Engine Light: The check engine light may illuminate due to issues with the spark plugs or the ignition system.
If you notice any of these signs, it's best to have your Subaru's spark plugs inspected and replaced as needed to maintain optimal engine performance and fuel efficiency.
How can you tell when spark plugs need to be replaced?
Here are four signs that it's time to replace your vehicle's spark plugs.
- The check engine light is on.
- Your car doesn't accelerate well.
- You hear strange noises.
- You visit the gas station more often.
- Your car won't start.
- The owner's manual says so.
- Benefits of replacing old or worn spark plugs.
How do I know if my Subaru spark plugs are bad?
One of the first signs of spark plug wear is trouble starting your Subaru. If the engine cranks longer than usual before starting or if you experience intermittent starting issues, it's time to inspect your spark plugs.
How long do Subaru OEM spark plugs last?
While the answer depends on the make and model of your vehicle, as a good example, the newest Subaru BOXER® engines are built with spark plugs made of ultra resilient materials, such as platinum. This allows them to be replaced about every 60,000 miles.
How often do Subaru spark plugs need replaced?
To extend the life of your Subaru spark plugs and ensure your engine runs smoothly, regular maintenance is key. This includes following Subaru's recommended service intervals—typically every 60,000 miles for standard replacements. However, this can vary based on your driving habits and the specific Subaru model.
What are the signs of a bad spark plug?
What are the signs your Spark Plugs are failing?
- Engine has a rough idle. If your Spark Plugs are failing your engine will sound rough and jittery when running at idle.
- Trouble starting. Car won't start and you're late for work… Flat battery?
- Engine misfiring.
- Engine surging.
- High fuel consumption.
- Lack of acceleration.
How often should you change spark plugs on a 2016 Subaru Outback?
around 30,000 miles
Eventually, at around 30,000 miles to as high as 40,000 miles, conventional spark plugs will wear out, which could cause stalling, starting problems and engine misfires. Higher-cost platinum-tipped spark plugs may not need to be replaced as often.
Do spark plugs really last 100 000 miles?
How long spark plugs last varies with different cars and different types of spark plugs. Older cars often had to have their spark plugs replaced every 5,000 to 10,000 miles, while some newer cars — with computer controls and more modern plugs — can go more than 100,000 miles on a set of plugs.
Why replace spark plugs at 60,000 miles?
If it's a lifetime spark plug or one that can last up to 100,000 miles, it may be a good idea to replace them at 50,000 or 60,000 miles. Based on the metal the cylinder head and spark plugs consist of, they could seize inside the cylinder head and you won't be able to get them out.
Is it easy to replace Subaru spark plugs?
Replacing spark plugs is something you can do at home within an hour as long as you have the following tools: Appropriately sized spark plug socket. 8-10mm sockets. Ratchet and extensions.
How long do OEM Subaru spark plugs last?
Experts generally recommend replacing spark plugs every 30,000 miles for the best results. If one of your Subaru spark plugs gets out of whack, it can cause a reduction in gas mileage and engine problems later on.
