Good news, tried again and I got one of the spare injectors to spray on the car;
The initially bad one would only drip fuel, no spray.
So I swapped it with one of the spares, and it sprayed, so I buttoned it all up and ran it, and the injector now passes the "screwdriver stethoscope" test, clicks just like the others.
I think the cleaning probably helped, possibly applying 9v may have applied enough magnetic force to un-stick the spare injector. (It was not working properly on the first try either).
So I suppose, in summary, what I've learned is:
-9 v won't necessarily fry an injector (but it could). I only touched the connection to make it pulse though, not a constant hook up.
-the screwdriver stethoscope is a great method to verify if the injector is or is not working
-both pins on the injector should have 12 volts (if good)
-the injector should have a resistance of about 3 ohms (if good)
-the ferrules on the injectors can be a pain to remove, to replace the hose
-if you can get the injector to spray/operate off the car, it should theoretically work on the car, given that other items are in proper working condition (when I did the 9 volt, I wan't able to exert 36 psi of force, so I only got a stream out of the injectors. But that is enough to verify no clogging.) However, just because it operates off the car doesn't mean it will operate CORRECTLY on the car. ie) fuel spray pattern, etc...
Also, my car seems to shake less through the chassis, so the bad cylinder may have been contributing to this issue (maybe not engine mounts)
I will be monitoring this cylinder's plug, as well as checking the injector via the stethoscope test as I go, making sure it KEEPS working....
I do not seem to have the missing/surging issue at higher RPMs right now, likely due to getting this injector to fire as well as adjusting the TVS to only contact at idle and very close to WOT. I may need to adjust again. Both of the TVS that I have seem to initially touch the WOT contact way too early, and one had never been opened, which I found odd. I do hear a change when I unplug the TVS at idle, so it is operating (enriching the idle mixture).
Thanks, hope this comes in handy for those facing similar issues.
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