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Hey James==The wires to the injector are one hot all of the time and one pulsates as the ecm grounds it as the engine is turned over. TAke a test light and hook one end to ground and probe both wires on the injectors. One wire should have 12 volts. If not, check all of the fuses. If no fuses blown check the wiring. If you do have 12 volts, put the light from 0ne injector wire to the other and have someone turn the engine over. the light should flash. If it doesn't, check the wiring to the ecm. Goodluck, Joe

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Q: If an 85 Cavalier gets fuel to the throttle body but no fuel comes out of the injector how do you test to see if the regulator or injector is bad?
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