A clog in your fuel system can strain your Hyundai fuel pump - sometimes even to the point of failure. That's why it's a good idea to regularly change your fuel filter as a maintenance measure that prevents corrosion and rust build-up in your tank and fuel lines. When the corrosion builds up, the pressure levels rise in the fuel system. That in turn, forces the Hyundai fuel pump to work excessively hard, and will lead to its premature death. Excess pressure in the Hyundai fuel system can also be created by a blockage such as a crimped fuel line or faulty regulator or check valve. The pressure in the car's fuel system can also be hindered by dirty fuel injectors or a corroded filter sock in the tank. When the pressure levels are not up to snuff, you will notice hesitating, hard starts, lean misfires and general lack of power while driving. To diagnose that problem, check the pressure levels in the different sections of the fuel system, comparing them against the manual's specifications. Install a new Hyundai fuel pump that you have purchased from our site - and then take care to maintain the fuel pump by changing the fuel filter frequently. After installing the fuel pump, do another pressure check on all the components again to make sure they are up to manual specifications.