Parts for your 2020 Subaru Legacy-Ignition coils

Understanding Ignition Coils for the 2020 Subaru Legacy

The 2020 Subaru Legacy, known for its reliability and smooth performance, definitely utilises ignition coils as a core component of its ignition system. These ignition coils play a crucial role in ensuring the engine runs efficiently and reliably. For those who own or service a 2020 Subaru Legacy, understanding what ignition coils do and how to maintain or replace them is vital for keeping the car in top shape.

Ignition coils are a key part of the engine's ignition system. Their main job is to transform the battery's low voltage into the high voltage needed to create a spark in the spark plugs. This spark ignites the air-fuel mixture inside the engine cylinders, which drives the pistons and powers the car. Without good ignition coils, the engine won't start or run right. On a Subaru Legacy, each cylinder usually has its own ignition coil, commonly known as a coil-on-plug setup. This arrangement is effective because it delivers the spark directly to the spark plug, reducing energy loss and improving spark precision.

For the 2020 Subaru Legacy, this system helps the car run smoothly and efficiently. When the ignition coils work perfectly, the engine starts easily, idles smoothly, and delivers good fuel efficiency and power. But if an ignition coil starts to fail, it can cause a range of problems like rough idling, engine misfires, decreased fuel economy, and even an illuminated check engine light. Recognising the signs of a failing ignition coil early can save owners from more expensive repairs down the track.

When servicing ignition coils on the 2020 Subaru Legacy, it's best to follow the manufacturer's recommendations, but here are some handy tips and information to keep in mind.

• Why ignition coils might need replacement: Over time, ignition coils are subjected to heat, vibration, and electrical stress. These factors can lead to coil windings breaking down or insulation deteriorating, which causes weak or inconsistent sparks. Moisture and oil leaks can also damage ignition coils.
• When to replace ignition coils: Replacement is usually necessary if the coil shows signs of malfunction. Common symptoms include engine misfires under acceleration, poor fuel economy, engine hesitation, or trouble starting the car. It's a good idea to have a diagnostic scan done if these symptoms are present, as it can point directly to a coil failure.
• DIY or professional replacement: Ignition coils on modern Subaru engines are generally straightforward to swap out. For those comfortable with basic car maintenance, replacing coils can be a DIY job using simple tools. However, for peace of mind, professional servicing ensures the job is done properly, including checking for related issues like faulty spark plugs or wiring problems.
• Coil maintenance tips: While you can't really 'service' an ignition coil itself, keeping the engine bay clean helps avoid contaminants causing coil damage. Regularly inspecting spark plug condition is important too, as worn plugs can increase coil workload and contribute to earlier coil failure.

During a regular Subaru Legend service, it's common practice to check ignition system components. Technicians will typically assess coil condition via diagnostics and visual inspection. If any coil looks damaged or causes a fault code, it will be recommended for immediate replacement to prevent poor engine performance.

To get the best life out of ignition coils on a 2020 Subaru Legacy, using quality replacement parts and sticking to proper spark plug maintenance are key. Ignition coils paired with old or worn spark plugs can wear out faster. So, changing spark plugs on schedule - usually every 60,000 to 100,000 kilometres depending on plug type - helps coils work more efficiently and last longer.

Since ignition coils impact how effectively the engine runs, ignoring coil problems can lead to bigger headaches, including damage to the catalytic converter from unburnt fuel and increased emissions. Keeping coils in good order means the Subaru Legacy runs cleaner, smoother, and with optimal fuel economy.

In everyday driving situations, ignition coils might not be something many drivers think about until trouble pops up. However, knowing what they do and recognising when they might be causing engine issues can save time and money. Whether it's a tricky engine misfire or just a nagging hesitation when accelerating, a failing ignition coil is often the culprit.

The 2020 Subaru Legacy benefits from a well-designed ignition coil system that ensures efficient combustion and reliable starts. Regular check-ups during servicing keep everything firing as it should. So, if the car begins to show signs like rough running or stalling, it's wise to get the ignition coils checked early.

Ultimately, ignition coils might seem like just a small piece of the Subaru Legacy puzzle, but they are critical to the overall driving experience. Caring for them with timely replacement and proper maintenance helps maintain the vehicle's reputation for dependable performance on Australian roads.