Cylinder down

[67 caprice]

#6 cylinder is not working. I have Good compression, Good Spark, and the Injector works.
I swapped #6 and #8 Injector harness and now #6 works and #8 is dead. This is a fast bank to bank. If I swap the harness back #6 is dead and #8 works. What could be the problem?

I'm using a FAST Bank to Bank

 

[norbs]

I would check the connections where the injector harness connects to the main harness, it could be corroded, or the end you plug on the injector the pins are loose, internally or dirty, etc

 

[67 caprice]

Thank for the input. I will check the connections tomorrow.

 

[67 caprice]

It seams that the wire that connects to the harness on the ECU was lose.
Thanks for the help.