Rep Power: 0

Ok think I found one of my problems, If I take the wire off the injector on cylinder 'one" engine runs same idle doesn't change, with or without wires idles same(wire directly to injector) is gettin power within in correct range, ok if i put wires back on injector 1 and pull the injector off cylinder 2 the car stumbles, until i put wires back, does the same with 3 and 4, I am assuming these means the injector in cylinder one isn't working? how hard is it to change? and what parts do I need to buy to do it, does anybody have a diagram or some insight? Thanks! By the way pulled the plug on cylinder 1 and tested to see if gettin spark and it is.

 
Rep Power: 0

Or your wiring is dorked up. Put a multimeter to the suspect injector's plug while the car is running and see if it registers voltage. If it does, remove the two nuts on top of the fuel rail, pull the rail off and replace the faulty injector. Done. Too easy. Make sure you shut the car off first though.