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lb7 injectors

  1. lb7 injector cups or headgasket please help

    01-04.5 LB7 Duramax Powertrain
    I've got a 02 lb7, stock turbo, built trans, ppei tunes, new injectors, headgaskets, arp studs. Ran fine for the first year, all the sudden started dumping water in the oil pretty quick. No smoke, no hard rad hoses, no bubbles in in tank. Replaced water pump with no luck. Any ideas?
  2. Abnormal Combustion?

    Alright so I noticed something new about a month ago. It only happens from ~25mph to 15mph when coasting/braking to a stop. And it doesn’t even do it every time. I have an idea of what it might be but I wanted to get some outside input also. It’s kind of hard to explain but I’ll do my best. I...
  3. 2003 LB7 white smoke at idle Injectors?

    01-04.5 LB7 Duramax Powertrain
    I have a 2003 silverado with the lb7 about 98000 miles on truck and am seeing a lot of white smoke at idle. I have the auxiliary nictane fuel filter kits 2 micron cat by the tank and a 1 micron where the oem filter is. Both filters were replaced and still have the white smoke. Havent noticed...
  4. Checking balance rates with Tech II

    01-04.5 LB7 Duramax Powertrain
    I'm pretty sure that 1 or more of my injectors are going bad, id like to figure out which ones. I have access to a Tech II scan tool but don't know how to check injector balance rates. Just wondering if anyone on here knows how to do this and would be willing to give me some instructions, or...