Some vehicles use gravity or high pressure to feed fuel from the fuel tank into the engine. However, others require a fuel pump. When a fuel pump fails, it can lead to critical engine shutdowns. Below are some of the key indicators that you have a faulty fuel pump.

3 Signs Your Car Has a Bad Fuel Pump

1. Sputtering Engine

If your engine suddenly starts to sputter while the car is in motion — as if you are running out of gas — even when you have plenty of fuel in the tank, the problem could be a faulty fuel pump. If the pump isn’t transporting fuel efficiently to the engine, the car will act just as if it is starting to stall out. It will sputter and jerk for a few seconds and then return to normal. Don't assume that the problem has fixed itself. Have your vehicle inspected for a failing fuel pump.

2. Poor Fuel Economy

A faulty fuel pump can transform a fuel-efficient vehicle into a fuel hog almost overnight. If you've noticed you're refueling more frequently and getting fewer miles out of a tank of gas, it could be due to a bad relief valve on your fuel pump. This valve regulates the pressure within the fuel system. If it is not opening properly and relieving pressure as it should, your car could be consuming more fuel than it actually needs and ultimately costing you more at the pump.

3. Failure to Start

If you ignore the signs of sputtering and poor mileage, you may try to start your car one morning only to find the motor cranks but won't turn over. This is the result of a bad pump. At this point, no fuel can reach the ignition system. Make sure you have fuel in the tank; don't keep cranking the starter, or you'll risk wearing out the battery.

For a new fuel pump—or any of 555,000 other aftermarket items—stop by AAW Auto Parts in Pasco, WA. They've been serving Franklin County businesses and DIYers since 1996. They offer great deals on car batteries, starters, alternators, and nearly any other auto parts you might need. If you’ve run into car issues, feel free to ask their knowledgeable team members for their advice. Visit their website for location details or call (509) 547-6000 to have your questions answered.