How to Replace Fuel Hoses

Attaching New Fuel Hoses

Now that your car has the fuel hose (or hoses) removed, it's time to install the new line. Again, if you purchased a new fuel filter, now is the perfect time to perform that maintenance as well.

Put the new hose clamps over top of the new fuel line, but keep the clamps loose for the time being. Make sure the hardware will face you when the line is in place so the clamps can be easily tightened. Next, slide the open ends of the fuel hose into place and check the fit.

Of course, the fuel line won't work if it's too short, but you'll also want to make sure the hose isn't too long. If there are any kinks or bends in the line, the gasoline might not flow properly. If it's too long, remove it and use your knife to cut a small portion off the ends until the fit is perfect. Once the new hose is the proper length, tighten the clamps with your screwdriver until it's firmly in place.

And that's it! You're done with attaching the new fuel hoses, but there are a few more steps to follow before you can drive again. First, you'll have to connect the negative terminal on your car's battery and then pressurize the fuel system by returning the fuel pump fuse in your car's fuse box. Next, start the engine. It may take a few seconds to get the fuel flowing through the system once again, but if you've done everything correctly, the engine should be running normally again. Inspect your work for any fuel leaks while the car is running and if you do find a leak, shut the car off and repair it immediately -- just remember to take all of the earlier safety precautions, of course.

For more information about fuel hose replacement as well as other vehicle maintenance, follow the links below.

Related HowStuffWorks Articles


  • "Replacing Fuel Hoses." (Jan. 12, 2010)
  • "Automotive Dictionary - FU." (Jan. 12, 2010)
  • TechGuys. "How to: Change a fuel filter." (Jan. 12, 2010)
  • Wilson, Adam. "Fuel Hose Replacement FAQ." (Jan. 12, 2010)