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Old 07-29-2013, 11:23 PM
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496CHEVY3100 496CHEVY3100 is offline
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Originally Posted by 1971BB427 View Post
Removed the carbs on my Falcon's BBC today. Cleaned them up, and ready for the new accelerator pumps whenever they arrive. Then went over to help the neighbor fix his '91 Camaro RS. Wont run unless he pours gas down the throttle body. Fuel pump works, and gets to the injectors, but it seems the injectors aren't getting a signal to fire. We put in a rebuild kit in the throttle body, and swapped injectors, but when I tested voltage across the injector plug it was zero volts. Checked to ground and one side has 12v. to ground. Appears the ground signal needs to close to complete circuit, and it's not.
Blind leading the blind here, as neither of us has ever fooled with TBI injection engine system! Going to check the fuel pressure tomorrow, to see if it's 10-12 lbs., and then look at distributor to see if the pulse signal is corroded or messed up. Grasping at straws until we learn!
I have a 86 Camaro doing the same thing will run as long as I am spraying gas in the injectors,,it is my controller box ( computer ) located under passenger side of yhe dash. could be your problem don't know for sure $99 at autozone
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