5 Common Signs that Your Fuel Pump is Failing
only air when it was expecting to receive fuel. This interruption in fuel flow causes your engine to skip several power strokes, forcing the engine to sputter and jerk. In the early stages of failure, this sputtering may only last for a minute or so before the engine returns to normal operation. Some drivers may confuse this sign with the effects of dirty gas, but modern fuel standards make a failing fuel pump more likely.
2. Your Fuel Pump Might Be Failing if You Lose Power When Accelerating
If you notice that your car often loses power when you try to accelerate from a stop, your fuel pump may be in trouble. Accelerating requires more fuel, forcing your fuel pump to work harder. If your pump is failing, it may not be able to keep up with this increased demand, starving your engine of fuel as it tries to accelerate. If your car acts like it’s about to stall when you try to accelerate from a stop, you may need to have your pump inspected.
3. Your Fuel Pump Might Be a Problem if you are Losing Power While Driving Uphill or Towing a Load
Certain driving activities, such as climbing a hill or towing a load, place an extra strain on your engine and demand more fuel to deliver the same performance. When your fuel pump isn’t on top of its game, it often can’t keep up with this increased fuel demand. These demanding situations increase the strain on your pump, causing the weak elements to fail. With the flaws in your weakened pump exposed, it isn’t able to maintain a steady flow of fuel to the engine, resulting in a loss of power.
4. Your Fuel Pump Might Be Failing if Your Engine Surges
As your fuel pump begins to wear out, its components often wear down at different rates. When this mismatch becomes great enough, the pressure in your fuel lines can become inconsistent. In these circumstances, drivers may find their cars suddenly accelerating for a few moments even when they haven’t pressed the gas pedal, a condition known as surging.
5. Fuel Pump Failure Might Be a Reason Why Your Engine Won’t Start
If you ignore all of the other warning signs of a failing fuel pump, it will eventually fail completely. Once your fuel pump has finally given up the ghost, no fuel will reach your engine. You may hear your spark plugs firing when you try to start your car, but without fuel, the engine won’t be able to turn over. Of course, there could be other explanations for your engine’s failure to start besides a failed fuel pump. To confirm that your pump has failed, check the pressure in your fuel lines with a fuel pressure gauge; if it reads zero, then your pump is likely dead. You can also check your car’s fuse box; a blown fuel pump fuse is another reliable symptom of a failed pump.