Why won't it start? on 1998 Ford Ranger

Engine turns over, have spark and fuel. Nothing we do can make it start. Any suggestions?

Asked by for the 1998 Ford Ranger
Are the injectors opening? Do you have spark at the plugs?
You can get a tool called a "noid light" to check the ground signal to the injector, you can use a voltmeter or regular test light to check for 12 volts at the injector. Try a search and you should be able to find the tool for your vehicle.
We have spark, but aren't sure if the injectors are opening.