Duramax Injectors

[LS3torque]

LB7 and LMM are both Duramax motors but night and day different on injector swapping. LB7 injectors are under the valvecovers and the fuel lines pass through the cover. In the middle of 2004 the LLY was born, LLY and all later Duramax had openings in the valvecovers so you could get there alot easier and maybe only change the bad injector. I firmly believe the fuel delivery and filtration systems are to blame for most injector failures, too much dirt being forced past the pintle at 27,000 PSI damages the pintle seat then the injector starts to leak. I have a 1 micron Cat primary filter with a 1 micron Donaldson secondary filter fed by twin Kennedy lift pumps. I have over 100,000 miles with no injector troubles. Good luck to ya.