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lb7 injectors
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  1. Duramax First Generation: 2001-2004 (LB7)
    I have read many of the posts on this and wanted to try cleaning injectors with the AcDelco Upper Engine Cleaner but can’t find any around. Dealers all say it’s discounte, I would buy off someone if they have any. Is there anything else that I can use like Sea Foam maybe?
  2. Duramax First Generation: 2001-2004 (LB7)
    Alright, another lb7 injector question. I have a 2002 Chevy Silverado 2500hd with the lb7 Duramax and 130,000 thousand miles, s&b cold air intake, bigger/louder exhaust, but stock fuel pump and filter set up. My truck does have some sort of tuning: setting one = stock two = tow heavy three =...
  3. Duramax First Generation: 2001-2004 (LB7)
    I’m lost here, 04 lb7 replaced 2 and 4 due to black smoke and both ranging from 6.2-7.0 in the balance rates. Everything went as smoothly as you could expect with this job. Put everything back together went to prime pumped and pumped. My hand and shoulder are literally sore from pumping for hour...
  4. Duramax First Generation: 2001-2004 (LB7)
    I have a 2003 2500HD LB7 / Allison rig that I've been told needs injectors. As I'm not super mechanically inclined, it's confusing enough already (not to mention painful$$), but one thing I want to be sure of is to replace everything I should logically replace at the same time. It seems like...
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