Turns over,won't start - 2001 Mercury Villager

You first have to determine if its fire or fuel. To do this listen when you turn on the ignition switch, You should hear a buzzing sound from the fuel tank to indicate your fuel pump is working. If no sound check pump fuse and relay. If you hear the sound spray quick start into the intake manifold and try to start. If it starts or try's to start its a problem with fuel pressure or fuel filter. If you get nothing it's likely fire.