Ruthless

ok i know its not a corolla but ive just put a 4age into my suzuki sierra and i got issues with it going, i wired everything up to the wiring diagrams and the injecters work i can smell fuel but there isnt a spark there isnt any power on the coil pack but the funny thing is all of a sudden i will hit the key and it will fire a few times and then nothing i think it could be a power issue or someone told me it could be a ignighter does anyone know what it could be or could give me a hand at resolving my issue cheers nathan