Reasons for Fuel Pump Failure in BMWs

Car Interior BMW
Fuel economy has continuously been a factor for those who are in the market for a new car. Choosing the right vehicle often depends on what kind of gas mileage it gets, and if you own a BMW, this might have been one of the aspects that attracted you in the first place. BMW’s aren’t considered to get excellent gas mileage.

However, they are one of the few high-end performance cars that deliver above-average fuel economy compared to others. BMW has a list of approved oils which are the only oils that should be used. At Dealer Service Alternative, we use nothing but the best, such as Mobil 1 synthetic oil and OEM filters to keep your car running like as it should! Our certified BMW mechanics have your best interests in mind.

Continuous maintenance of your car plays a huge role in the performance of a BMW, including its fuel efficiency. When your BMW is taken care of correctly, the various features of the fuel system work more efficiently, giving you the best gas mileage as possible, unfortunately, if you neglect the maintenance of your car, various parts of your fuel system can malfunction. One of the components in your BMW’s fuel system that you might experience problems with is your fuel pump. Here are a few reasons why your fuel pump could fail.

Low Fuel

When you notice the gas light turn on in your BMW, you know it’s time to fill up. Many drivers are aware that even when the gas light turns on, there is still a small amount of gas in the tank to get you around for a little bit. Continuing to drive while your gas tank is low can cause damage to your fuel pump. For your fuel pump to function adequately, the fuel pump needs to be continually pumping fuel, which is hard when there isn’t much fuel in your tank.

When the fuel is full or at a decent level, the fuel pump does not have to work as hard and stays cool and lubricated. If the pump gets low, the pump starts to become overworked and will not cool down as it needs. The overworking and overheating will cause the pump to fail sooner than what it has to.

Water in the Fuel

Another reason for fuel pump failure in your BMW can be due to there being water in the fuel. The water can be damaging to the pump by corroding its parts. This usually happens when you leave your BMW sitting or stored for long periods. The fuel tank attracts moisture, and eventually, the water gathers in the tank and starts to separate. Once it does, the sitting water begins to erode the metal and the fuel pump. To avoid this situation if you’re going to store your BMW for an extended time, make sure you remove all the fuel before storing it.

Dirty Fuel

Your fuel pump could also fail if you’re putting dirty fuel into your tank. Even though you have a strainer in your fuel system which pulls out contaminants and debris, not all of it can be stopped from making its way to the fuel pump and the rest of your car. Particles that make it through the fuel pump will gradually wear it down and cause the pump to fail. It can be a challenge to know when your fuel is dirty, so your best option is to check that the strainer is clean regularly.

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