What would cause all fuel injectors not to work?

I have a 1996 pontiac grand am with a 4 cylinder engine.The fuel rail is getting plenty of gas but none of the injectors will spray. Have checked the fuses, changed the fuel filter, and checked the fuel pump. Was wondering if anyone had any ideas what would cause the injectors not to spray.|||maybe a bad fuel pressure regulator|||change injectors if that%26#039;s what ur diagnostic shows.|||It is very rare, if ever, that all fuel injectors will not work. Connect a noid light to one of the fuel injector%26#039;s connector and see if it flashes. If it doesn%26#039;t, then there is no signal to the injector to spray fuel. Check upstream of the electrical circuit, eg, computer, other sensors, or any trouble codes. By %26quot;plenty of gas,%26quot; did you have an exact measurement of the fuel pressure?|||I would find a wiring diagram and find where they ground at. On some cars they have a fusiable link by the battery that can somtimes blow and not carry any juice to the ecm or pcm. But the noid light thing sounds like your best bet! Good luck!