1991 Acura Integra will not start

Next time it refuses to start do below to determine if its fuel or spark problem that is causing it.

Get a helper disconnect a sparkplug wire or two and ground it to the engine have helper crank engine over-do you have a snapping blue spark? If so you have a fuel related problem, check the fuel pressure to rule out the fuel filter/fuel pump/pressure regulator and listen to the injector/s are they pulsing or hook up a noid light. No snapping blue spark continue to troubleshoot the ignition system power input to the coil/coil packs, coil's resistances, distributor pick-up coil, ignition control module, cam and crank sensors.