85 NA z31 no start
 

Hello! I am a new owner of a manual 85 NA z31. Recently, i was driving and heard a click and the motor died. There was no jolting, sputtering, other noises, smoke, smells, nothing. A click, and the motor stopped. The motor now cranks but does not sound like its firing. I have confirmed pulse to injectors, i have confirmed spark, i have confirmed airflow. Again, i am new to this car so i may have missed something in the FSM when i looked. Im currently doing a lot of maintenance and upkeep as this car has 170k miles and is mostly original from what i can tell. Any advice helps, thank you!