BMW cars are a highly efficient model, thanks to the High-Pressure Fuel Pump (HPFP) system which ensures that enough fuel gets to the engine to support engine function. A BMW has a larger engine than other vehicles; hence, it needs more fuel to run smoothly.

A faulty HPFP does not deliver fuel to the engine as needed and this could cause engine problems if not fixed immediately. This guide explains the causes of HPFP issues in your car and the signs to look out for so you know when to get your car to a garage.

Common Reasons for HPFP Issues in BMW Vehicles

While there is no one cause for problems in a car’s HPFP, this system can be implicated by a number of conditions, some of which are discussed below.

1. Poor lubrication

The High Pressure Fuel Pump may be responsible for delivering fuel into your BMW’s engine, but it does not work alone. Several components work together to get this job done, and for this to work, these components need oil to prevent friction. If you do not use the right oil or provide sufficient oil for lubrication, these parts start to wear out, leading to diminished function in the HPFP system.

2. Poor maintenance

Your BMW is a luxury car so it deserves all the attention and care you can provide to keep it moving in great shape. However, the lack of adequate maintenance can cause damage to your car parts, including the HPFP. Maintenance services help to identify minor faults that can be easily fixed before they get worse. Failure to do this leads to more severe damage like a faulty HPFP.

3. Faulty Injector Pumps

The HPFP differs from regular fuel pumps because they deliver fuel at a higher pressure than others. While this is great for powerful engines, it also means that the injector pumps work at a higher capacity than usual, exposing them to easy damage and leaks.

If the injector pump starts to leak, fuel can leak out. Too much fuel in the combustion chamber, caused by this leakage, can cause carbon buildup, affecting the engine’s function.

4. Clogged fuel filter

The fuel filter has the important task of filtering out dirt and contaminants in the fuel, keeping them from entering the engine and causing damage. Over time, this fuel filter can get clogged with the particles it is keeping out, and Contaminants may include rust particles and other materials that can damage the fuel pump.

The Signs to Help Identify a Faulty BMW HPFP

Here, we have highlighted a few signs that indicate that your car’s High Pressure Fuel Pump may be faulty.

Engine stalls

If you notice that your car’s engine stalls or fails to start immediately, then it could be because of a faulty pump. This is a faulty HPFP in a BMW. For any engine to run properly, it needs a sufficient supply of fuel. But if the fuel pump is faulty, then the engine doesn’t receive its needed fuel and then cannot start.

Weird Noises from the tank

Another common sign that indicates a total fuel pump failure is when you start hearing weird ticking or whining sounds from your car’s fuel tank area rather than the usual low humming sound that shows smooth fuel flow through the system. In the case where parts of the fuel system, like the fuel pump, are damaged, there can be friction between these parts, leading to the loud noises you hear.

Some other signs to look out for:

• Reduced fuel economy
• Illuminated “check engine light” on the dashboard
• Poor acceleration/ frequent power losses
• Engine sputtering or jerking

The Best Garage to Fix a BMW’s HPFP Problem

Identifying a problem with your car’s HPFP system with any of the signs discussed above is the first step to ensuring that your car is in good shape. Next, an expert has to inspect your car, make a diagnosis of the exact cause of a fault in the system, and then decide on the best approach for repair or replacement.

Tanner Motors houses the most qualified technicians in Arizona, we also have the latest factory-grade equipment to handle any problem your car has. We specialize in maintaining and repairing European cars.  If you are looking for the best garage in Phoenix for your BMW’s HPFP issues, then you’ve found us.