I have a 95 z28 that is running rough, i went to get the codes pulled, and they said that I was not firing on the front four cylinders, they found this out by pulling the injecter plug while running, and there was no differance it the idle when we unpluged the front four injecters. and said i should fix this befor getting it scanned. I need to check the wires (spark plug) to see if they are crossed any other suggestions would help.

 

you might want to check for injector pulse first. it;s kinda strange that the fromt 4 would go out with and ignition problem. there are 2 7.5 amp fuses that suply power to the injectors, one of them could be bad or the termonal not touching...

 

ttt

 

HELP