Vacuum leak coming from injector/ tachometer out/FPR

[dee93]

hi everyone i was doing some things to my car the other day and i took off my intake manifold because i had 3 hoses that needed to be connected to the intake (under the general view of the intake where all of the wires r) and when i put the intake back on the car didnt want to turn on unless i gave the engine gas and the tachometer out of nowhere goes out and this is driving me crazy im a noob to this and i dont have a single clue what its going on on the fuel rail there is the connection for a hose but idk where to put it to. air is coming from the fuel injector nearest to the firewall and i dont know why its never done this before PLZ HELP!!
http://www.youtube.com/watch?v=IOsVCBgygA0 (THATS A VIDEO OF THE CAR ON I HAD TO GIVE IT GAS A LITTLE TO KEEP IT ALIVE)