How do you know if your fuel pump is bad i have a 2002 hundyi accent?

The 2002 Hyundai Accent is equipped with an electronic fuel injection pump. The failing of this unit can come gradually over a few days, or suddenly fail resulting in engine shut-off or even stranding. Failing fuel pumps may become noisier than normal is one common indication. Sputtering or loss of power during start-up is another classic symptom of an impending failure. Fuel pump diagnosis and replacement should be handed by trained professionals due to safety concerns from working with the vehicles fuel system.