i am really close on giving up on this car. injectors 2 and 3 sprays fuel constantly while injectors 1 and 4 kind of goes lean. then, i tried to rewire the fuel injectors manually (ran each + wire straight from the ecu all the way to the injectors) and it wouldnt spray any fuel at all. i wired it back the way it is and still the same ( 2 and 3 sprayed fuel continuously etc etc.)

i tried messing again with the wires just to experiment and now all four injectors spray fuel at the same time (not continuously).
anyone had this problem before?

What should i look at next? any advice/help would be REALLY APPRECIATED. THanks