I've acquired a chevy cosworth vega sn# 1221.the

Stephen

• 21873 Answers
• Posted on Aug 17, 2012

SOURCE: replace fuel injector throttle body 1996 chevy pickup with carb and manifold

Probably the biggest issue would be the fuel pump and emissions. Some of the controls-sensors would not work which would affect the timing and ignition. The computer would not be able to control fuel mixture which would probably cook the catalytic converters.
You could probably do some research on the hot rod trucks used in truck pulls and road racing for more info.
Of course none of this would be legal.

SOURCE: 1987 chevy r20 carb with electric fuel injection

I would check the wires that make the injector function to see how much power is going to them (using a multimeter). Now check the wires on the injector that is not working and see if you have power there. If you do then you have a bad injector. I don't think you do since you said that you switch wires and you are getting fuel at that injector. Check your wiring harness for shorted out wires. It doesn't make sense for one side to be working and the other not to be. I don't think it is a problem with your ECU, but it may be. See what colors the wires are going to your injectors and trace them back to the ECU, a wiring diagram would help. You need to check to see if you are getting power from the control module to the harness. I believe, however, you are experience a shorted out wire somewhere in the harness. That is where I would start. If you confirm you are getting power to the control module, but you are losing it somewhere in the harness it may be easier to just run a new set of wires instead of tearing apart the harness.