05 6.0l random no crank/no start.

[stp4132]

Hey guys this is my first post so i need firstly thank everyone on hear. Many, many times you folks have pointed me the right way.
That being said I've got the weirdest thing going on. Heres the gist- go to fire it up (morning, afternoon, cold/hot) Lights come on, plugs cycle....and nothing. So i go inside pissed off again, have a coffee, go out and it starts. Other times that dont work, so put it in nuetral and it works-and again doesnt work all the time. Tow it a few feet and it starts but again not all the time. SO yesterday it happened, i yanked the negs, reinstalled and she fired. Today-same thing-yanked the negs, reinstalled and she fired..... Help!

Codes- #7 injector balance/contri (was 3 injectors- ty rev-x!)

[stp4132]

.....anyone?