[jerryg2112]

One possibility is a failing fuel pump. When they start to go they don't usually just quit. It won't start, just crank. Then later it starts again just fine. Or you get longer cranking before it does start. You can check your fuel pressure with a fuel gauge. There is a fitting for this on the fuel rail which supplies your injectors. If you don't have a gauge you can at least listen for the pump to prime. If you just turn the key to ON but not enough to crank the engine the pump will prime(run for several seconds to build up pressure) then stop. You can hear this if you listen. There is a humming noise coming from the gas tank. Turn the key off and on to prime it again. Once you know what it sounds like you can listen for it when your car doesn't start again.