Questions and Answers

Chevy S10 No Fuel From Injector Q. Sir: I just recently put a GM 4.3 V-6 Vortec motor in my 1991 Chevy S10. It originally had a 151 4 cylinder. I took the V-6 out of a 1991 GMC Sonoma GT that was wrecked. I changed the engine wiring harness out of the GMC to the S10, now I have no fuel coming from the injectors. This motor ran fine in the GMC.

Could it be that I have low voltage to the injector due to a bad ground at the engine to body? Any help with this would be appreciated.

Thanks,
Ronald

A. The body side of the harness may be missing a few wires that you need. Does the pump run? The relay click? You will most likely need a service manual to trace what's missing.