Parts for your 2018 Subaru Impreza-Fuel pump

The Fuel Pump on the 2018 Subaru Impreza: What It Does and How to Keep It Happy

The 2018 Subaru Impreza is a popular model that combines reliability, performance, and a comfortable ride. Like most modern petrol-powered vehicles, the Impreza relies on a fuel pump to ensure the engine gets the steady supply of fuel it needs to run smoothly. The fuel pump isn't a fancy or flashy part, but it plays a critical role under the hood. Without it, the car wouldn't start or run properly, so it's important to understand what it does and why maintaining it as part of regular servicing can save headaches down the road.

Firstly, the fuel pump in the 2018 Subaru Impreza is an electric pump located inside the fuel tank. Its main job is to push petrol from the tank through the fuel lines, fuel filter, and injectors, into the engine at the right pressure. This ensures the engine receives just the right amount of fuel at all times, whether you're cruising along the highway or idling at traffic lights. Without a properly functioning fuel pump, the engine's performance will suffer - expect stalling, hard starting, or loss of power if the pump starts to fail.

Being an electric pump inside the tank helps the 2018 Impreza in a few ways. Firstly, it keeps the pump cool since it is submerged in fuel, which acts as a natural coolant. This placement also reduces the risk of evaporative emissions and helps maintain fuel pressure more consistently. That said, while the fuel pump is built tough to last, it's not invincible. Over time, dirt, debris, or simply wear and tear can cause the pump to weaken or malfunction.

Subaru engineers designed the fuel pump to offer consistent performance for many years, but regular maintenance and awareness can go a long way in getting the most out of it. Here are some tips and info about maintaining or replacing the fuel pump on a 2018 Subaru Impreza:

• Fuel Quality Matters: Using good quality petrol and avoiding contaminated or old fuel helps protect the fuel pump. Dirty or low-quality fuel can carry deposits that clog the fuel filter and strain the pump.
• Fuel Filter Care: Although the Impreza has a fuel filter designed to catch debris before it reaches the engine, over time this filter can become clogged. A blocked filter forces the pump to work harder, increasing the chance of early failure. Getting the fuel filter inspected and replaced as recommended by Subaru can help extend the fuel pump's life.
• Don't Run It on Empty: Running the tank near empty too often can cause the pump to overheat and wear out faster. Since the pump is cooled by the fuel around it, making a habit of topping up before the tank gets too low can help keep it cool and running well.

When it comes to signs you might need a new fuel pump, watch out for symptoms like engine sputtering at high speeds, difficulty starting, frequent stalling, or an overall drop in engine performance. A mechanic can perform pressure tests to diagnose if the fuel pump is underperforming or failing.

Replacing the fuel pump on the 2018 Subaru Impreza is a task best handled by a professional. Since the pump sits inside the fuel tank, the process involves safely releasing fuel system pressure, removing the fuel tank or accessing it through the rear seat or boot panel depending on the setup, and installing the new pump. It's not something to rush or attempt without experience due to the safety risks around fuel and the precise nature of ensuring a good seal and connection once the new pump is in place.

Regular servicing as per the manufacturer's schedule is the best way to keep the fuel pump in good condition, along with other components of the fuel system. Subaru's recommended service intervals will often include checks of fuel system pressure and filters, giving early warning of issues so you can act before a complete failure.

Overall, the fuel pump is a quiet but essential part of the 2018 Subaru Impreza's drivetrain. Treat it with a bit of care by using quality fuel, avoiding running the tank dry, and keeping up with fuel filter changes. That way, the Impreza will keep firing up and running smoothly for many more kilometres of Aussie roads and adventures.