Jim
Thanks for the input. I have not looked at the prechambers, other than looking through them in the head when I had the injectors out. I have not had the rebuilt injectors back out since they were installed. As for the fuel , I took a gallon container of fresh fuel and plumbed it directly to the siphon pump, this bypassing the fuel in the tank and any lines or hoses associated with the fuel heater. As for the compression test, I was using the motortronics gauge ( I believe that is the correct name) it is the approved tool by MB. I also thought those reading were high according to my manuals, and it said a max deveation of 3 bar which I exceeded that, but I thought that if those reading were accurate it has enough to run.