LB7 / LLY Injector assignment dispute

[mtl_dmax]

You pretty much need the KENT MOORE kit to do it. I know my local dealer lets me use theres as I buy my injectors from them in return.

Seems like you could rig something up to test the injector banks but I have no idea how you would test individual injectors on the LB7 since the return lines are under the valve cover. Sounds like you'd need some 100ml graduated cylinders and then get creative on how to attach the return lines (doesn't need to be pretty). I know I've done it on LLY+ trucks without the KM tool ($$$) but I would think you could at least get a return per bank on the LB7 (even a total injector return would be ok to indicate an issue......8 injectors returning less than 40 ml for 15 secs cranking). Maybe I'm missing something though.

Here's the procedure for it:
http://www.duramaxforum.com/forum/1270490-post10.html

You should be able to isolate the return from the injection pump too:
http://www.merchant-automotive.com/i...0609_00001.jpg

The OP may also want to replace one of the rubber lines after the filter head with a temp clear vinyl hose to make sure you have good fuel supply (ie no air bubbles and hose doesn't collapse).