1988 Chevrolet Blazer No Injector Spray
Sounds like the Injectors are not pulsing-Try cranking it while keeping a close eye on the injectors-No spray find out why. Maybe the driver in the PCM or Wire
Suggested Repair
Fuel pressure at the throttle body indicates the pump is working. Crank the engine and watch the injectors for spray. If they do not pulse, check the PCM injector driver and the injector wiring.
Conversation Summary
A 1988 Chevrolet Blazer 4x4 with throttle body injection had no spark, corrected by replacing the control module, then started and died. After gasoline was poured in to prime it, a backfire caused a small fire that damaged vacuum lines, which were replaced. Fuel pressure now reaches the throttle body, but the injectors do not discharge despite cleaning, new gaskets, and checks of the relays and wiring. One reply suggested heat damage to the throttle body. The expert said the injectors are likely not pulsing and advised watching them while cranking, then checking the PCM driver or wiring if there is no spray.
