Wont start I think it is the timing belt

Hi there do you have fuel pressure ? and if so what is the pressure ? when it cranks over is it cranking over smooth or a little irratic ? if its irratic not smooth then you probably jumped a few teeth on timing belt .how many miles on the motor and have you ever changed the timing belt? how did it quit while driving ? and if so how fast were you going ? if you were going fast you could have damaged valves so if you replace belt yourself do look close at the top of each piston to see if valve hit one . if so then you better let a head shop do the valves on the head , or you will end up wasting time and money ok i hope this was informative good luck let me know how it goes with a fixya rating please thanks