How to Replace the Fuel Filter in a 2003 Hyundai Elantra

by Cayden Conor
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The fuel filter in the 2003 Hyundai Elantra should be changed every 30,000 miles as part of the regular maintenance schedule. It filters any debris and condensation in the fuel before it reaches the fuel injectors. Even a tiny speck of dirt can clog a fuel injector, causing the Elantra to not run properly. The fuel filter is located under the car, near the fuel tank.

Step 1

Open the hood and locate the relay box near the driver's side fender well. Remove the cover. Find the fuel pump relay, using the diagram on the underside of the relay box cover. Pull the fuel pump relay out of its socket and set it aside. Start the Elantra and let it run until it stalls.

Step 2

Raise the rear of the vehicle with the floor jack. Support it with jack stands. Clean the lines at the filter with a rag. Loosen the clamps on both sides of the fuel filter and remove the fuel filter from its bracket, using a socket or wrench.

Step 3

Install the new fuel filter, making sure the arrow is pointing forward, and tighten the bolts to 20 foot-pounds of torque. Attach the lines on both sides of the fuel filter. Reinstall the fuel pump relay. Start the Elantra and check for leaks around the fuel filter area.

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