Parts for your 2015 Subaru Exiga-Ignition leads

Ignition Leads for the 2015 Subaru Exiga: What You Need to Know

When it comes to the 2015 Subaru Exiga and its ignition system, one important thing to note is that traditional ignition leads, also known as spark plug wires, are not actually used in this vehicle. Instead, the Exiga employs a more modern ignition setup called coil-on-plug (COP) ignition. This is a system where individual ignition coils are mounted directly on top of each spark plug, eliminating the need for separate ignition leads.

So, why does the 2015 Subaru Exiga not use ignition leads? The main reason comes down to efficiency and reliability. Traditional ignition leads were commonly used in older engine designs to transfer high voltage from the ignition coil to the spark plugs. These leads were essentially thick cables made to handle high electrical voltage without losing power or causing interference.

However, ignition leads have some downsides. Over time, they can deteriorate, crack, and lose their ability to conduct electricity properly, which can cause misfires, poor engine performance, and increased fuel consumption. To improve on this, manufacturers like Subaru have adopted the coil-on-plug ignition system in newer engines, including the one in the 2015 Exiga.

Coil-on-plug setups remove the need for ignition leads by putting each ignition coil right on top of the spark plug. This means the electrical charge travels a much shorter distance, improving reliability and ensuring a stronger spark. Without ignition leads, issues related to worn or damaged spark plug wires are eliminated.

Because of this setup, your 2015 Subaru Exiga's ignition system requires a different approach when it comes to maintenance and servicing. Instead of worrying about ignition leads, owners should focus on the health of the ignition coils themselves and, of course, the spark plugs they fire.

That said, understanding ignition leads and their function still helps understand how modern ignition systems have evolved. For vehicles that do use ignition leads, these components play a critical role in delivering the electrical spark needed to ignite the air-fuel mixture in the engine's cylinders. Designed with insulation materials to handle the high voltage from the ignition coil, these leads must remain flexible and intact to prevent spark loss or misfires.

Maintenance of ignition leads in older cars typically involved:

• Checking for cracks, wear or corrosion on the wire ends
• Ensuring the leads are securely connected to both the ignition coils and spark plugs
• Replacing them at recommended service intervals, or if any damage is noticed

Back to the Subaru Exiga and its coil-on-plug system, owners should keep an eye on the ignition coils and spark plugs for fault symptoms like rough idling, poor acceleration, or misfiring. When servicing the vehicle, mechanics will typically inspect the coils for cracks or damage, check resistance levels with testing tools, and replace any faulty units. Spark plugs need to be changed regularly as per the manufacturer's maintenance schedule to maintain the ignition system's integrity.

The design of the coil-on-plug system also means there is less wiring clutter under the bonnet, which creates a tidier and often more reliable ignition arrangement. Fewer components mean less chance of wear-and-tear related issues that could affect ignition performance.

For those who own older models or vehicles fitted with ignition leads, it's worth mentioning that replacement leads come in a variety of designs and materials. High-quality leads can improve ignition performance and even protect against electrical interference that might affect sensitive electronics.

Although the 2015 Subaru Exiga does not require ignition leads, understanding the role of these parts in older cars highlights the way automotive technology is improving. With ongoing maintenance, modern coil-on-plug systems like those on the Exiga offer improved reliability, reduced maintenance hassle, and consistent engine performance.

So, if you're servicing a 2015 Subaru Exiga, remember that you won't need to worry about ignition leads. Instead, focus on regular checks and replacement of spark plugs and ignition coils. Following this routine ensures the Exiga's spark system runs smoothly, keeps the engine firing confidently, and helps the car deliver its best fuel economy and power.