Parts for your 2019 Subaru Impreza-Ignition leads

Ignition Leads on the 2019 Subaru Impreza: What You Need to Know

When it comes to the 2019 Subaru Impreza, a common question among car enthusiasts and everyday drivers alike is whether ignition leads are part of the ignition system. The short answer is that ignition leads, also known as spark plug wires, are not used on this particular model. This is because the 2019 Subaru Impreza employs a modern ignition system that does away with traditional ignition leads in favour of a more efficient set-up.

So why are ignition leads not used on the 2019 Subaru Impreza? It mainly comes down to the type of ignition system the vehicle is equipped with. The Impreza uses a coil-on-plug ignition system. This means that each spark plug has its own dedicated ignition coil mounted directly on top of it. By eliminating the need for ignition leads, this system reduces energy loss and increases reliability and performance. Without traditional ignition leads running from a central distributor or coil pack to the plugs, there is less chance of voltage drop or interference, which can sometimes cause misfires or weaker sparks on older vehicles.

This coil-on-plug set-up is not unique to the Subaru Impreza - it's becoming the standard for many modern cars. It offers several advantages, like improved fuel efficiency, reduced emissions, and easier maintenance since there are fewer parts to worry about.

For those who have driven older vehicles, ignition leads were a key part of the engine's ignition system. They transfer the high voltage from the ignition coil to the spark plugs, igniting the air-fuel mixture inside the engine to create combustion. Typically, ignition leads needed regular inspection and occasional replacement to prevent wear, cracking, or electrical shorts that could affect engine performance.

Since the 2019 Subaru Impreza does not use ignition leads, there are some benefits for the owner or mechanic. Without ignition leads, there's no need to constantly check for cracks or wear in the wires or worry about corrosion around the spark plug boots caused by damp conditions. This results in lower maintenance costs and fewer failure points in the ignition system.

Owners of the 2019 Subaru Impreza do still need to maintain the ignition system, but this mainly involves checking the spark plugs themselves and ensuring the coil packs are functioning correctly. Spark plugs should be inspected and replaced according to the vehicle's service schedule to keep the engine running smoothly. Clean, correctly gapped spark plugs make a big difference in fuel efficiency and engine response.

When addressing ignition system maintenance on the 2019 Impreza, attention generally turns toward:

• Inspecting and replacing spark plugs at intervals suggested by Subaru (typically around 60,000 to 100,000 kilometres depending on the type of plug fitted)
• Examining the coil-on-plug units for any signs of damage, corrosion, or electrical faults
• Ensuring battery voltage and charging system are healthy, as coil-on-plug systems rely on steady voltage to produce consistent spark
• Checking for any engine management fault codes that could indicate ignition system problems

Regular servicing and diagnostic checks will help keep the ignition system in good shape without needing to deal with ignition leads at all. If a coil pack ever fails, it's generally swapped out individually rather than replacing ignition wires.

To sum up, the 2019 Subaru Impreza's ignition system is a newer, more streamlined design that skips traditional ignition leads altogether. This contributes to better engine performance, increased reliability, and easier maintenance. So if you're servicing your Impreza, focus on the spark plugs and coils rather than looking for ignition leads that aren't there. Keeping the ignition system in optimal condition will make sure your car starts smoothly every time and runs efficiently on the road.