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  1. 911 Problems Forum
    Hi everyone, I recently acquired an '02 Chevy 2500HD w/ Air Dog II Lift pump, and I'm having a hard time reliably getting it started. Once it gets going, it runs fine, no smoke, no rough idling. Here's what I'm seeing: Fuel & Air filter recently changed in stock housing, AirDog filters still...
  2. 911 Problems Forum
    So my 2009 LTZ duramax is going in and out of limp mode every other day, only one code for fuel rail pressure on the right side, and i noticed on live data cylinders 2, 6, and eight had zero fuel pressure at all times. so i figured it cant be injectors because all three at once would be weird...
  3. 01-04.5 LB7 Duramax Powertrain
    Hey I have an 03 Lb7 that died while driving the other day and I’ve been having a fuel pressure problem lately. I would have to prime to start in the am’s or when it sat for a while and then finally it just quit running. Won’t start cranks fine. The primer pump I just bought new and installed...
  4. 11-16 LML Duramax Powertrain
    Hi everyone, I'm curious to see if anyone has any good tips or tricks to pressurize the fuel system on my lml. It has to have a leak somewhere in the fuel system as it won't hold a prime. I have tried re-sealing the filter original filter head. Replaced the filter head. Switched from oem filters...
  5. 01-04.5 LB7 Duramax Powertrain
    Earlier today I installed a fuel pressure gauge from Glowshift to monitor my AirDog 150. I bought and installed the 8 psi spring from Vulcan Performance. My gauge reads a minimum of 12 psi while the engine is under load and about 14-15 psi while idling. Since I installed the 8 psi spring I...
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