Help! Car won't start, but gets fuel.

[generalachoo]

So right now we are at the following stage:

The fuel goes into the fuel rail and comes out through the return. We are not sure if it is actually going into the chamber.

When we start the car all we hear is a crank. When we remove the spark plugs we don't know if the plugs are actually firing, since we took out out in a dark room and saw no spark.

One thing that might be causing it (out of a vast amount of things) is the lack of a proper fuel injector box. We have one with 3 wires going into two plugs.

Please advise!

Super Thanks