This morning while driving the engine all of a sudden cut out while doing 67kph and wouldn't start

I pushed the car the rest of the way home and it still wouldn;t start

I cranked it would kick and kick and kick it didn't start, I wondered if it had a spark so I installed my spark tester and it showed it giving a good strong spark, I then checked the fuel and discovered that there was no pressure on the fuel injector rail ( I pressed the shrader valve, I then turned the ignition to on and pressed again, and again nothing :( thinking it was the fuel pump I applied 12v straight from the battery to the leads and it started up and pressured up I cranked it and started ran for about 4 seconds then cut off again and wouldn't start, I ran the pressure test again I had a little air then nothing... I pulled the computer off its mount disconnected it for 30 min to reset itself it still didn't help... all the fuses and relays are good I tried starting it again for about 5 min then attempted to pull the error codes out of the computer and got nothing ????