95 Mazda Miata not Idling.
 

Hello everyone, i am having a very serious issue and i can not seem to find out what it is. I was driving my car, stopped at a stop sign then as i went my car lost like half power, then it instantly died. I have swapped out the Mas, the coil. i get spark, i get gas. When i try starting it, it starts for a couple seconds then instantly dies. If i press the gas it also does the same. I am Stumped and need help.