nissan quest 1995 starting problems

got a new used nissan couple weeks ago. the car starts rough. new starter, good batter and alternator. Turns over but doesn't fire the first three cranks of the day after that it starts pretty good most of the time.
Any ideas would be appreciated. I looked for the optical sensor but not sure what it is supposed to look like. Runs great once started

Thanks for the help

Mike

Try just turning on the ignition key to activate the fuel pump, it will be on for 5 seconds then shut off. Turn off ignition switch and then try starting. You may have a bad check valve in the fuel pump that lets the pressure release when sitting. To test get a fuel pressure tester and check after the fuel filter to see if pressure drops when sitting. Harbor freight has them for about 15 dollars.