jessesword

So I just did a head gasket job, water pump, thermostat, and battery. Got everything put back together and fired her up. She ran good for about 15 mins and just died like i turned the key off. Would not start up again. If i spray fuel into the throttle body it will run off that fuel. I checked for pulse at the injector off the wiring harnes. Getting pulse. This morning after sitting for the night it fired up again. then bam...... 15 mins later it dies again. Please help im lost!!
thanks