i just put all new ignition, plugs wires cap rotor coil mainly because it was in desprete need of a tune up, also the o2 sensor wire was broken so i reconnected that, and a new fuel filter, now the car runs like crap, it idles good but under a load it has no power, i still think its missing somewhere like a plugwire isnt connnected or something , but ive checked those over and over again and theyre all good, so i did a resistance test on all 8 injectors and they were above spec but all close together, and theyre all getting power and opening and closing but can they still be bad, or do i have another problem, ive tried just about everything i can think of and nothing works

 

Pull some of the plugs back out and see what they tell you.

 

ill check it out, the timing and egr are the only things i havent checked egr may be stuck causing a vacuum leak, but i dont think the timing would be off because it was never changed