okay, in the past 2 or 3 days, ive been noticing a problem in my car that seems like its only getting worse. when i am any gear, and am giving the car gas, i get these sputters like my car is running out of gas. it happens often, like 2 times within one second. but what leads me to think that its not an engine problem is that i can be in neutral or have the clutch in and my car will rev as smoothly as the day i bought it. a few additional notes... i have an exhaust with a leak in the catalytic converter (soon to be replaced)... and up until about a month ago, i was so low on money that i would wait until my car was (literally) sputtering on fumes to go to the gas station. my assumption is that my fuel pump is not working correctly, or my fuel filter is clogged. any help would be GREATLY appreciated!!!