I changed all of my fuel injectors. Now the car sounds as if it's skipping. I checked the voltage to the fuel injector connectors and found one that reads -11.6 while all others read +10.6. My questions is :Is that why the car is running so rough and how do I repair it? Will changing the connector solve my problem? All plugs were gap correctly with new wires. 1988 Delta 88 3.8 V6