How Long Does a Fuel Pump Last?

[VonElena]

Under normal usage, it lasts about 5 years. The lifespan mainly depends on mileage and fuel quality. Generally, replacement isn't necessary unless it affects engine performance. Causes of fuel pump failure include: 1. Gasoline serves to cool and lubricate the fuel pump. Delayed refueling after the fuel warning light comes on reduces cooling and lubrication, leading to damage. 2. Insufficient fuel pressure: When the fuel level warning light illuminates, there's approximately 7 liters of fuel left in the tank. Low fuel levels prevent adequate cooling and lubrication of the fuel pump motor, causing overheating or even stoppage. Frequent operation under these conditions can lead to premature failure. 3. Long overdue replacement of the fuel filter: Severe clogging in the fuel supply system forces the fuel pump to work harder, and prolonged high-load operation can cause damage. 4. Poor fuel quality: Contaminants or debris in the fuel tank are drawn in through the pump's bottom filter screen and sent to the engine. While larger particles are filtered out, smaller ones enter the pump motor, accelerating wear and causing early failure.