Kevin, was there going to be more to that procedure than what you posted?
I can sort of clean the injectors, but as others have stated before, cleaning may or not give good results.
One other thing that occurred to me that I have not looked at yet (only a brief time on this truck before end of shift last night) is maybe the mesh screen in the injector holder casting.
I did observe that the LPG fuel pressure value shown on the Hitachi would fall to around 14 kpa (from around 26 kpa at idle) when the accelerator pedal is pushed down with engine running
I will check that when I return to work Friday.
The voltage values I am getting from the ETCA sensors has me puzzled though,