If you track how much mileage you get between fills and notice a drop, it could be your pump. This means more trips to the gas station to feed your car, truck, or SUV. What happens when it gets too much gas? If the pump is pushing too much fuel into the engine, you’ll notice power surges while you drive, i.e., speed spikes and drops, which… Lower Fuel Efficiencyīecause your fuel pump is pushing too much fuel into the engine you’ll burn more gas than normal. We’ve talked so far about what happens if the engine doesn’t get enough gas.

You’ll lose power if the pump isn’t working properly. As with faster speeds, the engine requires more gasoline to operate under stress. If you notice your vehicle loses power when you drive up steep inclines or load it up with cargo, your fuel pump could be the culprit. An old and worn pump motor may get too hot and this can overheat your entire engine. It will stall, however, if the pump causes your engine to overheat. If your engine is getting gas from the pump, even a lesser amount than needed, it won’t likely stall. If the pump cannot produce a constant stream of gas at higher speeds, your vehicle’s engine will sputter and threaten to stall. Your fuel pump doesn’t stop pushing gas through to the engine once you’ve started your vehicle it also pumps gas to meet your vehicle’s speed. A worn pump loses its pressure and the engine is being starved of gasoline. The car will struggle to start and run because the pump cannot push enough gas through. If your vehicle’s fuel pump cannot get gas from the tank to the engine, you will have trouble starting your car. Loud whining indicates there is a problem.

The normal noise your pump makes is a low hum. The pump may also make this noise if you’re low on fuel or the fuel in your tank is contaminated. Fuel Tank NoiseĪ damaged fuel pump might make a loud, whining sound that you’ll hear from your gas tank. Willoughby Hills Auto Repair lists eight signs you might need a pump replacement. You can tell if your pump has problems, however. Most people never have to have their fuel pumps changed. Your car, truck, or SUV’s fuel pump will last over 100,000 miles on average.

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