YesImLDS

I recently dug in a little bit deeper to change a valve cover gasket and while I was in there I threw in a 248 cam on the intake side. While doing all of this I changed the plugs and wires. I found out I have a bad injector which still is to be replaced, but it ran before. I checked my timing twice, went of TDC and set everything where it needed to be. All it would do is crank and crank with about one little sputter every time you'd let it sit for a few minutes. Any ideas on what it could be? I am getting fuel to 3 of 4 cylinders and spark as well. Think it just needs a little start fluid or something? I am also going to charge up the battery since it's very cold out and try again.