I have a '91 Z28 with a 5.0F that I can't seem to get it to run right. It started running rough only when hot about 2 weeks ago, than last Monday it wouldn't start after comming out of a store. After about 3 hours I got it to start than got it home. I started going over Ignition and fuel components, finding that 5 of the injectors had resistance readings from 1.9 - 5.0 ohms. So I ordered a set of LB9 Bosch III injectors from FIC. I replaced the injectors and its running a little better but I'm still having problems with a rough idle and lack of performance. It seems like the right bank of injectors are not wirking properly. When I disconnect #8 injector the idle raises instead of dropping, with not much of a change n RPMs on 2, 4, or 6 either.
I am also not getting any codes from the computer.

Any help or suggestions would be greatly appreciated

 

Well I figured out what the problem was. I'm posting this just in case someone else runs into the same problem. I found one of the injectors was stuck open, and dumping fuel into the cylinder. Ended up with 3 quarts of gas in the oil. The injector was spraying fuel all the time even when the plug was disconnected from it.

Hope this helps somebody in the future.