Like the title says. These are ls2 injectors on a tbss intake. The whole setup was givin to me and I was told it worked fine. The injectors haven’t been on the motor for somewhere close to ten years. I decided to check to make sure the worked. All ohm in at around 12ohms +\- .5. All have continuity. But of the 8 injectors on one will open with a 9v battery. I have a hard time believing 7out of 8 injectors are bad. I’m fairly new to FI so let me know what I can do.