first check and see if the injector checks out with resistence between both poles... if its not the injectors then see if the injector is getting the signal from the computer it will send voltage to make the injector fire.
to check by taking a test light: put a probe and cut a slit in the wire or to the part that plugs into the injector which will be carrying the current and the other side to ground and see if it lights the test light, if it does then your gettin the signal and the circuit is good, if not then im all out of ideas for now
btw do you still have that 7k miles shortblock? Id like to buy it for $200 like you said
