The high-Pressure Fuel Pump in a BMW collaborates with the low-pressure pump to deliver fuel to the engine for combustion. If the high-pressure fuel pump is used under certain conditions, it tends to fail. Inconsistent fueling, usage of low-quality fuel, and poor maintenance culture are some conditions that can cause your BMW’s high-pressure fuel pump to fail.

Unquestionably, BMWs are powerful, luxurious vehicles that require a good amount of power for optimal performance. For this reason, a lot of BMWs have twin turbo engines, which provide the extraordinary volume of power these vehicles need.

The twin-turbo engine requires a specially designed fuel pump that can effectively deliver a precise amount of fuel into the engines. The high-pressure fuel pump does just that and also ensures that the correct air/fuel ratio is maintained for the smooth running of the engine.

Due to the crucial nature of the high-pressure fuel pump to the functionality of your BMW, it then becomes necessary to monitor and keep it in the best shape.

Causes of BMW’s High-Pressure Fuel Pump Failure

The failure of a high-pressure fuel pump comes with huge risks to the driver as it could result in other costly damage if left unattended. Discussed below are some factors that might cause your BMW’s high-pressure fuel pump to fail.

• Using low-quality oil or fuel: The high-pressure fuel pump is more likely to fail if the oil being used is not in line with the manufacturer’s recommendation. Resorting to low-quality oil will accelerate the wear and tear of the pump. Apart from using sub-standard oil, using bad gas can also cause the failure of the pump. Compromised fuel usually combusts erratically, which affects the smooth running of your vehicle and, over time, causes your pump to fail.
• Erratic fuel supply: The high-pressure fuel pump can also fail if the fuel supply is irregular. Irregular fuel supply causes the pump to exert more force than usual in supplying fuel to the engine, thereby hastening the pump’s wear.
• Solenoid Failure: The solenoid is a crucial element in the proper functioning of the high-pressure fuel pump, and its failure affects the regulation of the fuel pressure. When the fuel pressure is unregulated, it may cause the pump to fail.
• Poor Maintenance: Performing routine maintenance is essential to keeping your vehicle in the best shape. Holding on till your vehicle breaks down will always turn out to be detrimental to your vehicle’s overall performance. Poor maintenance results in the accelerated wear of vehicle parts, which routine maintenance could have prevented. In the absence of routine service and consequent oil and fuel filter replacement, substances begin to clog the fuel system, which in turn affect the pump.

Symptoms of BMW’s High-Pressure Fuel Pump Failure

When should you be worried about your pump? Your high-pressure fuel pump might be headed towards the end of its cycle and needs replacement when you notice one or more of these signs.

• Difficulty starting your car: When you experience difficulty starting your car, it might simply mean that the fuel pump is not sending the precise amount of fuel needed for combustion to occur to the engine.
• Poor acceleration: When your vehicle accelerates sluggishly or the engine revs but has a tough time accelerating, it might be due to fuel pump failure.
• Decreased fuel economy: If you notice a reduced fuel efficiency, it might be as a result of a failing fuel pump. When the same amount of gas previously used to cover a certain distance now covers less, it is more often than not a ripple effect of a failure in the pump system. If you notice these symptoms, you should consult an expert immediately for a proper diagnosis.

Das European Autohaus for your BMW Repair and Maintenance

At Das European Autohaus, we understand that the maintenance and repairs of European vehicles need to be precisely done, which is why we are meticulous with our service. You can rest assured that your BMW is in the best hands as our experienced mechanics employ the latest tools in dealing with your European vehicles.

We are located in Spring, TX, and have an excellent track record of helping European car owners in Westfield, Tomball, and Woodlands with their vehicle maintenance and repairs. Please call or visit us today to schedule your next service appointment.