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Three Causes of Fuel Pump Failure

Carter Fuel Systems / Fuel Pump Failure

We explore the three most common causes of fuel pump failures.

The fuel pump is responsible for delivering fuel from the gas tank to the engine. A seemingly simple task that can easily be compromised when outside issues affect the performance of the pump.

The three most common causes of fuel pump failure include:

  1. Fuel contamination: Fuel is jeopardized from corrosion, debris and moisture, which can all bring visible contaminants into the tank.
  2. Clogged strainers/filters: The aforementioned contaminants eventually clog critical components including strainers, filters and the fuel pump itself. This blockage ultimately impairs the flow of fuel, which may affect the vehicle during acceleration, among other long-term impairments.
  3. Electrical issues: Electrical faults are also significant contributors to fuel pump failures. The most common electrical issues are rusted connectors, loose connectors, or melted wiring and connectors. To help identify issues of poor electrical connections, a high quality digital volt/ohm/meter should be used to test for voltage drops and continuity.

Three Signs of Fuel Pump Failure

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