|06-07.5 LBZ & LLY Duramax Powertrain Discussion of components that are directly involved in the power production and all that is needed to get and keep the truck moving . Engine , Transmission Ect|
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|12-07-2012, 08:54 PM||eBay Motors #1 (permalink)|
Duramax Lifetime Supporter
Join Date: Jan 2011
Location: Meridian, MS
Losing rail pressure/ losing power
Driving on the interstate from work tonight and cruise set on 70 the truck started slowing down and had very minimal power... Rail pressure was fluctuating between 900psi- 7800psi... I floored it and it would show 14,000 then start dropping down to 7k then 4k to around 900 them jump back to 8k before cruising fine and starting all over again... Finally made it to the house and as I was pulling in the driveway it dropped to 700-900psi and that was it... Any ideas??? Is this a cp3 gone bad??
2006 GMC 2500HD LBZ "CMNSKLR" - SOLD
|12-09-2012, 04:30 PM||eBay Motors #3 (permalink)|
Join Date: Jun 2008
Location: So. Cal
Moving to LBZ --vehicle home-! Change the fuel filter-- and check the rubber fuel lines-- at the rear driver's valvecover and at the side of the trans. The lines get kinked and restrict fuel.
Chevy 04.5 LLY, 2X, shell, XDR, MikeL Heavy duty up-grade, 6spd, TransGo, deep pan, blocked, fingered, de-badged, PCV, 65 Gallon replacement Aero tank, PPE on 2, LBZ-mp, Kennedy pump, shimmed, Pre-fuel filter, tow mirrors, BU cam, gauges, GPS, Sirius, bags, custom grille, fender vents, HD trans cooler- Curt front hitch, footwell lights, load lights, Studs, head gaskets.--- Jerry
|12-09-2012, 08:58 PM||eBay Motors #6 (permalink)|
Join Date: Jul 2007
Location: ObamaNation-Under the Dictator's rule
Orings in the fuel filter head are probably shot, sucking air.
Try a fresh fuel filter before rebuilding with new orings.
Si Vis Pacem, Para bellum !!!!
07' Chevy Silverado HD
--CC, SB 4X4 Duramax Diesel/ 6 spd Allison Auto (PTO high idle mod)
--EFILive tuning by ...ME with 68MM 4094VA Garrett Powermax Stage 2 Turbo
--SILVERLINE 4" Stainless Exhaust, Modded stock Airbox and LIBERATOR Stainless Downpipe
--AMSOIL Synthetics and filtration bumper to bumper, including Bypass
--DDM tuning HID's in Low and High Beams, 6000K Lows/4250K Highs
--PPE rear Diff cover, PPE Deep Trans Pan, PPE High Flow Manifolds and Up Pipes
--Danville 3" Y Bridge and big air intake kit / EGR delete
--Airdog II DF200 w/ CAT UHE filter upgrade...etc,etc...