Nissan Repair: car wont turn on, fuel pressure, clarification

Question
1986 300 zx my car wont turn on it will crank, sometimes turn on for 2 seconds but turn off again i got enough fuel presure i got spark  

Answer
Hi Erick -

Need more clarification -

What do you mean by saying it will "turn on for 2 seconds", meaning the car will run for 2 seconds and then shut off?

What was your means for checking fuel pressure, and how much pressure was it?

aloha
calvin