The engine in your BMW needs to be properly maintained with regular servicing. This is the best way to ensure that your BMW runs for as long as you need and expect it to. Even with regular maintenance, you may run into specific issues, with one of those issues being a leak in the fuel pump. A fuel pump leak should be fixed immediately as soon as any of the below signs are noticed. If not, the engine will suffer serious damage.
Damage from a Leaking Fuel Pump
The main function of the fuel pump, as its name suggests, is to pump fuel from the fuel tank to the engine. In order for the engine of your BMW to run smoothly and effectively, the engine has to have the proper mixture of fuel and air. The fuel pump is responsible for providing the correct amount of fuel to the mixture.
When there is a leak in the fuel pump, the engine can be seriously damaged. If fuel is leaking out of the fuel pump, the engine will not receive the proper amount of fuel required to run. This will lead to the engine working harder to accelerate and reach high speeds.
An example of this is when you are attempting to merge onto the highway and you need to accelerate to a higher speed. If there is a leak in the fuel pump, then the engine will not receive enough fuel, causing it to fail to provide the power you need on demand. Before the engine is unable to reach the requested speed, its parts will grind unnaturally together, causing wear and breakdown.
Signs of a Leaking Fuel Pump
To prevent damage to your BMW’s engine, you should be aware of warning signs that indicate a fuel pump leak. Knowing these symptoms allows you to have the fuel pump fixed before damage to the engine occurs.
A leaky fuel pump will cause the engine to sputter at high speeds. When you are driving at a consistently high speed, the fuel pump needs to produce a continuous stream of fuel to the engine. If there is a leak in the fuel pump, there will not be enough fuel to maintain the RPMs. This causes your BMW to suddenly sputter. In the beginning of a leak, your BMW will return to its regular engine performance after the sputter, but the sputters will remain if the leak is not addressed.
The second warning sign of a fuel pump leak from the fuel pressure gauge. The fuel pressure gauge measures how much fuel is getting to the engine. If there is a leak, the fuel pressure gauge will show a lowered amount of fuel reaching the engine. This reading is best obtained with the help of another person. When your BMW is parked, have one person hold the fuel pressure gauge while the other person revs the engine. After the engine is revved a few times, the gauge will give the proper reading.
Another warning that there is a leak in the fuel pump is decreased gas mileage. When you first purchase your BMW, you know the average number of miles that you will get to the gallon. If you have noticed a decrease in this number because you are constantly at the gas station, then there could be a leak in the fuel pump.
Repairing a Leaking Fuel Pump
Having a leak in the fuel pump is an issue that can easily be identified. But when the leak is left unattended for an extended period of time, damage to the engine and all of its parts will occur.
The best way to prevent this is by bringing your BMW in for service as soon as you notice one of the above-mentioned signs. At World Class Auto Repairs in Boca Raton, FL, all of our technicians are ASE certified.
When you bring your BMW in at your previously-scheduled appointment time, the most up-to-date equipment and technology is used to diagnose exactly where the leak is in the fuel pump. This allows us to fix the problem quickly so you can get safely back on the road with confidence in our repair. Call us today for an appointment or to speak to our technicians.