hi I have a 85 z28 with tpi, all injectors are firing, got spark,no lifter noises but feels like its missing, new cap rotor,wires,plugs,coolant fan sensor,new injector,intake pleneum gaskets,temp gauge sensor,and ignition modual

 

Cylinder balance test.

Disable one cylinder at a time. (either by pulling the plug wire, or, the injector connector.) Note the RPM drop on each cylinder. (they should all be the same) If you find a cylinder that has little affect on RPM, there's your culprit. If everything looks good on fuel/spark side, time to do a compression test.

 

I'd also ohm test the injectors

 

Even though you have new wires one could be bad or burnt. I prefer the assembled wires vs the ones you have to cut and crimp for this reason. I've run across many new bad or nearly new wires. I use plug wire boots which are less than $10 on ebay vs $75

 

ok I have all prefit msd wires,cap,rotor,coil, the number one cylinder is the bad one, new injector, tested wire for spark with a new and exsiting plug, all good I guess is it possible fuel is not getting to the number one injector and maybe a compression test, also I did notice a no fuel present at the number one injector when I changed it too