How To Replace Fuel Pump

By: Laurel Moore

Break Studios Contributing Writer

If you are looking to prolong the life of your engine while saving money, knowing how to replace the fuel pump is essential. Although most people turn to their mechanic for this job, you can easily replace your fuel pump with a little confidence and know-how. Replacing a fuel pump by yourself or with the assistance of a friend, can easily save you you some serious cash.

Things You Will Need:

  • Safety Glasses
  • Fire Extinguisher
  • Fuel Pump
  • Wrench
  • Container for Fuel
  • Phillips Screwdriver
  • Flathead Screwdriver
  1. In order to replace your fuel pump, it is important to take certain safety precautions. While replacing the fuel pump, you should work in a well-ventilated area. You should also keep a fire extinguisher handy because gas is highly flammable. Also wear eye protection while replacing the fuel pump.
  2. To replace your fuel pump, you have to relieve the pressure in your fuel system. To relieve the pressure, you should allow your engine to cool thoroughly. After the engine has cooled, locate the fuel pump fuse in your car's fuse box. Once you have located the fuse, start your car, and remove the fuse while the car is running. When you pull the fuse, your car should immediately stop running. If your car continues to run, you pulled the wrong fuse.  
  3. Once the pressure in your fuel system has been relieved, it is time to remove the fuel pump. The fuel pump will be located either under your car or it is mounted inside fuel tank. If it is mounted inside the fuel tank, you should see an entrance point for it under the carpet or in the trunk. Once you have located the fuel pump, you will need to disconnect the lines hooked up to it.
  4. Use a wrench to disconnect the lines that are running to the fuel pump. While removing the lines, you should have something to catch the fuel that is going to drain out once the lines are removed. Be extra careful not to spill any of the fuel.  
  5. After removing the lines running to the fuel pump, disconnect the wires that power the fuel pump. The wires are small and should be handled with care. It is important to keep track of where each wire is connected. You may have to use either a Phillips or flathead screwdriver to remove the wires.
  6. Now that the fuel pump is removed, place the new fuel pump in its place. Reconnect the wires that power the fuel pump and the fuel lines. Once you have reconnected them, place the fuel pump back into its proper position and secure it. Replace the spark plug that you removed earlier. After everything is back in place, make sure there is no fuel spilled anywhere. If there is, clean it up immediately.

You have officially replaced your fuel pump all by yourself. With any luck, you did it without blowing up you and your neighbors.

Posted on: Jul. 05, 2010