Parts for your 2015 Mitsubishi Asx-Spark plugs

Understanding Spark Plugs in the 2015 Mitsubishi ASX: Purpose, Maintenance, and Replacement

The 2015 Mitsubishi ASX is a popular compact SUV that relies on a petrol or diesel engine to get around. When it comes to the petrol versions of the ASX, spark plugs play a key role in how the engine operates. In simple terms, spark plugs are essential components used in petrol engines to ignite the air-fuel mixture inside the cylinders, enabling the engine to run smoothly.

For the 2015 Mitsubishi ASX, especially the petrol variants like the 2.0-litre MIVEC engine, spark plugs are definitely fitted. They are a fundamental part of the ignition system, positioned in the cylinder head where they generate a small but powerful spark. This spark ignites the compressed air and fuel mixture inside the combustion chamber, causing the explosion that pushes the piston down and powers the engine.

Without spark plugs, the petrol engine in the ASX simply wouldn't run. This contrasts with diesel engines, which rely on compression ignition rather than spark ignition, meaning they do not use spark plugs. So, if you have a diesel model of the ASX, you won't find spark plugs under the bonnet. Instead, you'll have glow plugs which help start the engine in colder conditions. But for the 2015 petrol ASX, spark plugs are absolutely necessary.

When it comes to maintaining the 2015 Mitsubishi ASX, looking after the spark plugs is an important aspect of routine servicing. Over time, spark plugs wear out and their efficiency drops. This can lead to rough idling, reduced fuel economy, difficulty starting the engine, or even misfires. If these symptoms appear, it's a good indicator that the spark plugs might need attention.

Replacing spark plugs on the ASX is pretty straightforward but it is advisable to follow the manufacturer's recommendations closely. Mitsubishi typically suggests inspecting or replacing the spark plugs every 60,000 to 100,000 kilometres depending on the type of plugs fitted. Iridium or platinum spark plugs are often used in modern cars like the ASX for their durability and longer lifespan.

Maintaining your spark plugs does more than just keep the engine running - it helps maintain fuel efficiency and reduces harmful emissions. Dirty or worn plugs can cause incomplete combustion which wastes fuel and increases exhaust pollutants. So, ensuring the spark plugs are in good nick is not only good for your wallet but also for the environment.

During a spark plug check or replacement, mechanics will look for signs such as:

• Electrode wear or rounding
• Deposits or fouling on the plug tip
• Cracks or damage to the ceramic insulation
• Incorrect gap size between the electrodes

If any of these issues are present, it's best to replace the spark plugs with the right type specified for the ASX engine. When installing new plugs, it's crucial to set the correct gap for optimal performance. The ASX's workshop manual provides exact specifications for this.

Additionally, good practice during servicing includes cleaning the spark plug ports before removing old plugs, applying a little anti-seize compound on the threads, and torquing the new plugs to the correct setting to avoid damage. Proper installation helps prevent future problems like misfires or engine knock.

For owners who frequently drive in tough Australian conditions such as dusty rural roads or stop-start city traffic, keeping spark plugs in tip-top shape can prevent headaches down the line. Regular inspection allows you to catch issues early before they affect vehicle performance.

In short, whether it's cruising through city streets or hitting the highway in a 2015 Mitsubishi ASX, the spark plugs quietly do their job with every ignition cycle. Treating them with care during servicing keeps the engine firing efficiently, reliably, and economically. If unsure about the condition of your spark plugs, it's always worth chatting to a trusted mechanic who knows the ASX well or consulting the owner's manual for recommendations specific to your model and engine type.