Sorry, I'm new, didn't mean to put it in the wrong place. It's a 04 GMC 2500hd 4X4 with the lly engine. Thanks for the link to the balance rate quarrel. I'll look into that a bit more. But graduated cylinder is the only way to really be sure & allows you to visually see the spray, right? I'm diesel ignorant, but I can usually repair anything with the proper info.
2004.5 GMC 2500hd lly, 4X4