Car won't fire?
 

just got done replacin the head gasket on my 94 z and now that I put it back togethger, Im gettin no fire. The starter is goin and my fuel pump is turning on, but no fire. I mean none. I replaced my coil and my ignition module and still nothin, not even from the coil. I dont know what the problem is. Any help would be appreciated. thanks.

When you drained the coolant, did you get any on the opti? You may be loosing the pulses from the opti? Is the Ignition Module getting pulsed from the PCM?

I wouldn't put every thing together before testing the opti, this can be done by connectind the wires and rotating the opti by hand while ignition is on, there should be spark and injectors pulsing.

Check if you have spark at the coil wire. If you have spark there but not at the plugs its your opti... Go over all wires including opti harness etc...