BMW High Pressure Fuel Pump Issues Explained

One of the more commonly seen issues across BMW’s lineup is failure of the high pressure fuel pump. This component is responsible for compressing the fuel prior to the main fuel pump, which allows for the increased pressure necessary for efficient engine operation. 

In this article, we’ll cover what the high pressure fuel pump (HPFP) is, the common failures they experience on BMW models, and what it could mean for your vehicle.

What Is The High Pressure Fuel Pump

The high pressure fuel pump exists separately from the regular fuel pump found in all modern vehicles, and is instead located prior to the main pump. This setup allows the vehicle to compress the fuel to a high degree, over 2,000 PSI, which encourages the optimal efficiency and performance in a direct-injection turbocharged engine such as many of those found in BMWs. 

Why Is The HPFP So Important?

The high pressure fuel pump isn’t just there to make the vehicle run more efficiently, it’s a critical part of the direct-injection system found in many modern cars. Without a properly working HPFP, the fuel won’t be adequately atomized when injected, which can lead to a host of issues in the engine including misfires, rough idle, and potential stalling.

Symptoms of a Failing High Pressure Fuel Pump

• Reduced fuel efficiency
• Flashing check engine light
• Misfire
• Rough idle
• Stalling
• Limp mode

How Do High Pressure Fuel Pumps Fail

HPFPs can fail for a number of reasons, such as contaminated fuel that can damage or clog internal components, failure of the pump’s solenoid, or simple wear and tear. BMW’s high pressure fuel pumps have been known to fail at higher mileage even with proper maintenance and care, which is why keeping an eye on your pump and oil pressure are so important to keeping your vehicle running properly.

Fuel System Services in the Salt Lake Valley

If you’re experiencing the signs of a failing high pressure fuel pump, or any other issues related to your fuel system or engine, don’t hesitate to reach out to the expert Euro technicians at Alex’s Autohaus in Midvale, Utah. Our team has extensive experience in providing fuel system maintenance and repair on a wide range of European vehicles. 

Don’t let your fuel issues linger and cause expensive damage down the line, give us a call or schedule online today to secure your appointment with the Salt Lake Valley’s premier fuel system repair facility.