Aug 17, 2024 · LB7: Looking for a stock and a tow tune. strokerz Nov 21, 2019 Replies 10 Views 3K Nov 26, 2019

Dec 15, 2025 · Lb7 Oil Level Switch - Struggling with Pin 70 2002holding Mar 3, 2025 Replies 3 Views 376 Mar 4, 2025

Sep 15, 2024 · Recently bought a wrecked lb7 for dirt cheap from a friend. Pulled the motor, stripped it to the block and sent it to the machine shop to be hot tanked, honed and new cam …

Feb 5, 2021 · Thinking about long-term plans for my truck (2003 CCSB 4x4 LB7). Let's say the goal is 600 rwhp (or enough to run 7.99 in full street trim in a 7000 pound truck) and to be as …

Oct 17, 2011 · What year is your truck? Sounds like a LB7, they have the most problems with fuel in oil. If it is a LB7 more likey it's injectors. I have never heard of the cp3 putting fuel in the …

Jul 22, 2017 · Well this is the elusive LB seven fuel pressure relief valve. It's so special that the dealer wants about $700 for it. It's only sold as part of the fuel rail junction block. None of the …

Oct 12, 2012 · Does anyone know what the fuel rail pressure should be at idle?

Jul 3, 2015 · Been fighting a oil dilution problem for a while now and it keeps getting harder to find the leak.No return or injector leaks visible with covers off and idling at 160mpa so I added dye …

Dec 28, 2013 · First time diesel owner. 2002 Duromax LB7, MPG dropped from 18 to 10, Oil pressure dropped = major fuel in crankcase. Pulled oil fill and no leak out of the CP3 so I have …

Sep 13, 2015 · I am relatively mechanical and the head gaskets are blown in my LB7. I keep hearing all these horror stories on changing head gaskets on a duramax. I have never done …