Idle/start problems.....HELP!!!!!!!

[Punisher]

i am having problems with my car starting, it starts at times but other times it just keeps cranking and not catching on. I dont know what the problem is cuz i have changed my sparks and wires, also the cap and rotor, and the fuel filter. I also know that one of my injectors leaks externaly cuz i can see the fuel under the injector, thats just probably the o-ring which i will replace asap.
As i was taking off the fuel rail there was something in the way that i had to take off but i dont know what it is exactly....i have pics of it, there was a hose going to the bottom of it that was melted off and the hole at the bottom of the piece was clogged.

I think it looks like a idle control unit.