So about a week ago I let my car run very low on gas. After I filled it everything was fine for a week. The other day driving home from work the car seemed a little louder than usual and like it didn't want to go. It just didn't have much pep. The next morning when I went to start the car it started for a minute and then just stops. When I try to start it, It's loud and trying to start but nothing. Things we have already checked. Getting spark on all four spark plugs, it seems to be getting fuel up to the bar when you push the nipple in it sprays gas. We sprayed starting fluid in the intake and nothing. The car has 72,000 miles.