Ok my 89 TPI IROC runs bad and starts hard. Every plug wire gets spark, so I started pulling injector wires and the pass side seems dead. What do I do now? The care was outside and I know mice got to it, but I don't see anything obvious.
Thanks!

 

First thing you do is , get a 12V automotive test light and make sure there is power on both sides of the fuses marked "INJ 1" and "INJ 2" with the key in the on position . If there IS power on both sides of both fuses , then you must inspect the harness and find out where the mice chewed the wires apart . Remember , the ECM switches the ground side of the injectors and there is only the ignition switch and the two injector fuses in the positive side of the circuit . With one set of injectors having power , that would indicate either a likely fuse or open wiring fault .

Good Luck with it