Why Does Your BMW’s High-Pressure Pump Fail?
The high-pressure fuel pump in a car can be likened to the heart in a human body. Like the heart, the fuel pump helps to ensure that the engine gets enough fuel for combustion, and at the needed pressure. This has a direct relationship with the performance of your BMW.
Like every other vehicle component, though, the high-pressure pump can fail due to various reasons, leading to performance issues in your car. In this guide, we will introduce you to the common causes of fuel pump failure, how to identify the signs, and the best maintenance actions to take.
Common Reasons for High-Pressure Pump Failure in a BMW
The high-pressure pump does powerful work to keep your car’s engine running. Due to the stress this pump undergoes to perform its function, it is easily susceptible to faults. Here are some common causes of these faults in a high-pressure pump;
1. Poor Fuel Quality
The quality of fuel you put into your car’s tank has an impact on not just your car’s performance, but also the health of its fuel system. If you frequently use low-quality fuels in your car’s tank, the contaminants present in the fuel can cause damage to the pump either by wearing out the pump’s internal components or by causing a blockage.
2. Lack of Maintenance
If you want all your car’s parts in good shape for a long time, you should not joke with maintenance. The lack of proper maintenance habits can affect the normal function of your car, including the fuel system. Without regular inspections, filter changes, and other maintenance actions, the fuel pump can run into problems. Damage to other parts of the fuel system due to poor maintenance could also affect the fuel pump.
3. Overheating
Fuel issues can be both the cause and the effect of fuel pump problems. For instance, if your car’s fuel level gets too low, it cannot supply the engine with enough moisture to cool the engine for its function. This usually results in excessive heat generation from the engine which could affect the fuel pump by degrading its seals and causing a leak. More fuel leakage causes even more heat generation and this eventually damages the fuel pump and if not well managed, the engine.
4. Wear & Damage
Another common reason for a car’s high-pressure pump failure is age-related wear, and this is almost inevitable. As one of the highly-performing components of a car’s system, the fuel pump can easily wear out due to the stress it undergoes for the engine to run. If this wear is overlooked, it could develop into major issues in the fuel system; thus affecting the engine’s function.
What Should You Do with a Failed High-Pressure Pump?
If your BMW’s high-pressure pump fails due to any of the reasons mentioned above, you may begin to notice signs such as an illuminated “check engine” light, difficulty starting the engine, poor acceleration, or lower engine power. In any of these cases, you should;
- Inspect your car and the fuel system for physical signs of damage and note the problems.
- Be selective about the type of fuel you use. Only opt for high-quality fuels and use additives to help clean the fuel system.
- Follow a strict maintenance schedule and change the fuel filters after the recommended timeline.
- Repair damaged or failed parts as soon as you notice them as this helps to prevent spending too much on future repairs.
Where to Fix BMW’s High-Pressure Pump Problems in Humble
Whether you can tell what the problem 
with your car’s high-pressure pump is or not, as soon as you notice the signs of failure, you should reach out to a reliable mechanic. Not only will a mechanic help you find a solution, they will also provide tips on how to keep the system safe and prevent a recurrence.
Motorwerks Auto Group is a leading auto shop in Humble, TX with highly-trained and experienced technicians. Whatever the case is with your car, we will find the problem and fix it so your car can return to you in its best shape and in record time. If you need quality repair and maintenance services, all you have to do is contact us and we will deliver the best care.