I have been using these discussions to diagnose and repair a ton of issues on our truck.
I have a G2 tester by Hickok that I have been using on a 2005 Ford F-450 truck that has a sinister EGR delete kit on it. We have been using Shell Rotella 15w-40.

We had a no start condition that we thought was injector related. We had less than 500psi on the High Pressure oil which was corrected by replacing STC fitting on the HPOP. Once we had the correct pressure we were able to test spool valve times and found number 8 injector was dead. When we pulled that injector the screws attaching the two halves were broken so the spool valve was not even connected to the wiring. We replaced that injector and now have all spool valves reading at or near 300 on the tester which I am told is good.

We took truck for a test drive and it still feels like it has a lack of power and very rough idle. We proceeded to do an injector kill test on the G2.

My question is around interpreting the data from the injector kill test. Are their certain parameters that the torque and load deviation numbers need to be within? If an injector is showing very little or no deviation (0), does that indicate a bad injector? I am running the test, not sure how to read it.

Any information would be greatly appreciated. Thank You.

 

I'm not familiar with that scanner at all, so not sure how much help I can be. Can you do a buzz test with that?

Have the batteries/FICM been tested?

 

Here is a link to video on tester I have.
HickokIncorporated's Channel - YouTube

I had the FICM repaired as it was only putting out 35v. It is now installed and reading 48v.
It sounds like the truck is missing on some cylinders. I know the spool valves are all good. I need to test the bottom half of the injectors.
I have the capability to do a contribution/kill test. It takes a baseline RPM/Torque and then proceeds to kill each cylinder one by one - each time taking a new reading of RPM/Torque/Engine Load. I am supposed to be able to tell which cylinders are not contributing by looking at the deviation. I called the guys at the manufacturer and they had no idea, said they just copied the same test that ford/navistar uses.

Does the autoengenuity software do a test like this?

I am waiting on a fuel pressure gauge that I am going to install as low fuel PSI may also be a problem.

 

AE does it, but it graphs it, so you can see which one's are bad when they don't fall in line with the other cylinders. Low fuel PSI is an injector killer for sure.

Even with a good FICM on mine, it ran like crap in the morning until I put new batteries in it.