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Injectors not opening.

mark84k5

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michigan
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.
 
If they sat with fuel in them, they can be stuck closed with varnished up fuel. May need a little cleaning, and they should work again.
 
If they sat with fuel in them, they can be stuck closed with varnished up fuel. May need a little cleaning, and they should work again.
I let them sit in fuel injector cleaner over night and they still don’t move. I will keep letting them sit and hope they free up. This morning I went and got 16 LMG flex fuel injectors I think they are 36lb/58psi. Basically the same injector from the junk yard. I will use them if these won’t work.
 
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