[tisilrad]

Ok i have reread the entire post. Some additional suggestions would be to check your ground connections under the dash above the central electric panel. The LH grounds the injectors to fire them, HOWEVER, it could have a loose ground that will cause a drop in voltage due to increased resistance. A voltage test with a meter would be using a ground from the lead..thus showinng 12.5 volts. The small voltage would also be enough to fire a noid light but NOT have enough voltage to open the injector coils. So long story short..check your grounds, possibly the one at the back of the motor, in the same area of the throttle cable and crank sensor(...im not sure where the ground for the injectors are at), look in the wiring diagrams if you have them.Also make sure the primary ground from the engine block to the chassis is clean and tight,if you changed the motor this would have to come off...possibly not tightened up well enough. The grounds on the engine block depend on this primary ground(i replaced mine with a 00 sheilded cable.)