Hesitation On Aceleration

I own 1994 Coupe Chevy Lumina with a 3.1L engine. My problems started about a month ago. When I mash the gas to take off from the light the car kind of hesitate a little and then takes off. This only happens after the car warms up.

Any ideas of what this could be?

could be the fuel pump going bad

one or mare bad injectors, fuel pump, fuel filter, plugs, wires, o2 sensor, throttle position sensor. It could be many things.