Passing the buzz test does not mean the injector is functioning, it only means the spool valve and coils are functioning.

Where did you get your new injectors?

 

I bought 8 remanufactured from Doorman trough rockauto, i have also swapped nr 7 for nr 5 and still the same result that cyl nr 5 has no contribution. I think the injectors are fine.

 

Was number 5 the issue before replacing injectors?

 

Yes it was.

 

Did you use a scanner to disable injector 5? Sounds like you need to do a compression test. Pass buzz test and swapped injectors and still have the same issue for that cylinder.

 

Yes i used different scanners, forscan, torque + and autoenginuity.

 

The FICM definitely CAN cause an injector not to work even if/when the buzz test is successful. The FICM could have an issue with the logic side of the two control boards.

That said, you may have a higher possibility of a bent push rod since you had fluid in one or more cylinders.

 

Make a video of using the starter jumper connection wire on the passenger battery, spinning the engine, and post it here. The cadence can be a good indication if you have a low-compression cylinder.