ok this one can get a little mind consuming at the least.
Bear with me now.
You stated your bank 2 injectors were not firing. If your computer, wire harness are a "batch fire" configuration, this may hint toward a wire harness or ECM issue.
here is what you look for to determine if it is batch fire or sequential fire-this is very important so please take the time to look things over well.
batch fire has no egr-and no wired in cam position sensor (on batch fire it is merely an oil pump drive unit) although the cam sensor "may" have a electrical connector which is left unplugged. There should be no wire harness provision for the cam sensor in other words.
Batch fire has an injector wire harness which uses red for 12+ and tan on one bank, white on other bank. ( all 3 injectors per bank have same wire colors. It is either whit and red, or tan and red depending on bank)
Now, if there was an issue such as a bad connection , or a bad "channel" in the ecm this would cause the issue you are having, as all 3 injectors in the batch fire injection fire at the same time, 3 times per engine cycle. yes, there is some wash involved but it seems to work fine when working. It is imprtant to get your head around this, so you can understand and troubleshoot the batch fire system.
So, here is what you can do
using a jumper, apply 12 v to the injector banks. I would do this at the injector harness connector near the alternator.
Disconnect it and locate the 12 source line, then locate your white and tan injector bank lines.
Jump 12v + to the red line, and then "ground" the tan bank. listen for clicks.
now ground the white bank and listen for clicks. This will verify the wiring is good--
If someone is reading this later and wanting to troubleshoot just one injector, disconnect the other in the bank and perform the above test while listening for a click. The injectors should talk to you.
Ok, this will not eliminate a "clogged" injector but for the existing case I think we already eliminated this with new injectors.
Now, after you verify the injectors and wiring is indeed good, then you go back to the ecm connector and make the same "test" using a jumper to apply 12 and ground to the injector banks. This will verify the entire harness is good.
Now reconnect everything and fire it up. You can use a good quality volt meter to probe for 12 signall pulses at the injector connector near the alternator. If you see no pulsing on the offending bank, you have a bad ecm.
I have a spare 93 non california ecm for batch fire injection. I have been thru this very issue and had to rewire 3 times to get it all correct.
