Were you able to find out anything about the emergency fuel treatments? Reason for asking is I have seen 911 that was ran in the fuel for an additive and it actually ate the glue that holds the pleats in the fuel filter and this very small amount of contaminate actually cause a scenario exactly as you are explaining. The fact that you are hearing and seeing injector pulse tells that the control part of the injector is trying to pulse but the nozzle is never opening. I the case that I referenced the injector were removed from the truck and we put them on the test stand and no fuel came out for quite awhile during the full load test but then they unstuck and tested perfectly. This was the case for all the injectors in the truck and we put the injectors back in and the truck ran perfectly and still runs today. We did drop the tank and clean it. It had a few very small circles of brown residue in the bottom of the tank that when put on your fingers and left to air for a few second became very sticky and smelled like the glue that they use to hold pleats in some fuel filters. We cut the fuel filters open and this glue was mostly gone and what was left was extremely slimy almost liquid. This was on a solenoid style common rail injector and the LML uses a piezo style but the nozzle function is the same. The piezo style in the LML needs the correct back pressure to function correctly so checking that and also performing a return test on the injectors and the no. 2 regulator could shed some light as to why the rail pressure is slow to build.

Brendle Strites
Owner/Technician
Strites Auto Service
Clearville, Pennsylvania, USA