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10 Symptoms of a Bad Fuel Pump: Signs You Shouldn’t Ignore

Kevin V

Gasoline and diesel engines rely on a sophisticated fuel delivery system to ensure proper operation. This system is responsible for delivering fuel to the engine at the right flow and pressure. At the heart of this system are one or more fuel pumps.

However, when a fuel pump starts to malfunction, it can lead to unexpected interruptions during your daily commute. In this article, we, at New Again Auto Repair, will discuss the common symptoms of a bad fuel pump that you should be aware of. If you notice any of these signs, it’s crucial to address the issue promptly by scheduling an appointment with our skilled technicians.

Engine Sputtering or Hesitation: A failing fuel pump may result in engine sputtering or hesitation, especially during acceleration. This occurs when the pump struggles to maintain a consistent fuel flow, causing intermittent fuel supply to the engine.

Difficulty Starting the Engine: If you experience difficulty starting your vehicle, it could indicate a problem with the fuel pump. The pump may not be supplying enough fuel to create the necessary combustion for a smooth start.

Engine Stalling: A faulty fuel pump can cause the engine to stall, often when the vehicle is idling or driving at low speeds. This occurs due to inadequate fuel delivery, resulting in an insufficient amount of fuel reaching the engine.

Reduced Power and Performance: When a fuel pump is failing, the engine may lose power and exhibit decreased performance. You may notice a lack of acceleration or a decrease in overall engine power.

Surging or Bucking at High Speeds: If your vehicle surges or bucks at high speeds, it could indicate a fuel pump problem. Inconsistent fuel delivery can lead to fluctuations in engine performance, resulting in these erratic movements.

Increased Fuel Consumption: A failing fuel pump may cause your vehicle to consume more fuel than usual. This is often due to the pump’s inability to provide an adequate and consistent flow of fuel, causing the engine to work harder and use more fuel.

Loud Whining Noise: A whining noise coming from the fuel tank area could be a sign of a worn-out fuel pump. The noise indicates that the pump is struggling to operate smoothly and may require attention.

Fuel Smell: If you detect a strong smell of gasoline around your vehicle, it could be a sign of a fuel pump leak. This can occur when the pump’s internal seals wear out or become damaged, leading to fuel leakage.

Engine Overheating: A malfunctioning fuel pump can cause the engine to overheat. Insufficient fuel supply can result in an imbalance in the air-fuel mixture, leading to increased engine temperature.

Check Engine Light: In some cases, a failing fuel pump can trigger the check engine light to illuminate on the dashboard. It is recommended to have the vehicle’s diagnostic system scanned to identify the specific issue.

If you encounter any of these symptoms, it’s crucial to have your fuel pump inspected and repaired by professionals. At New Again Auto Repair, our experienced technicians are well-equipped to diagnose and resolve fuel pump issues efficiently.



LOCATION: 9200 Talbot Avenue, Unit A, Silver Spring, MD 20910, US

OPENING HOURS: Monday-Friday 8:00AM – 6:00PM | Saturday 8:00AM – 12:00PM