fuel pressure at filter head - Chevy and GMC Duramax Diesel Forum
01-04.5 LB7 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, Etc.

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post #1 of 3 (permalink) Old 09-12-2011, 07:02 PM Thread Starter
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fuel pressure at filter head

what should the fuel pressure be at the filter head? i installed an airdog ii and want to make sure it is set at 12psi. i am using the merchant auto adapter to install a pressure gauge in the filter head.

2001 lb7 4x4. 120k miles
efi live by kory. Ma750 trans, 5" exhaust, airdog ii, Snow water-meth, arp studs, turbonetics billet 64mm, GOTDURAMAX? Traction bars, ATI dampener, MA motor mounts.
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post #2 of 3 (permalink) Old 09-12-2011, 07:26 PM
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You may have to lower the pressure a little-- the early engines developed a surge at idle when the pressure was over 10 lbs.

Chevy 04.5 LLY, 2X, shell, XDR, MikeL Heavy duty up-grade, 6spd, TransGo, deep pan, de-badged, 65 Gallon replacement Aero tank, 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.
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post #3 of 3 (permalink) Old 09-13-2011, 01:34 PM
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With my AD 150, my gauge tells me I am getting 11

2008 LMM CCSB LTZ 554HP 1015Torque

Sold2007 LBZ 2500HD Crewcab 4x4, EFI Live DSP5, TransGo Jr, Airdog II 165, MBRP 3" Downpipe, AFE intake, 4inch RBP turboback straight piped exhaust, egr blocked, PCV Rerouted, tie rods sleeved, 20inch Fuel Hostage, 305/55R20 procomp extreme A/t
SOLD2003 2500HD Ext cab LB7 4x4, EFI Live DSP5, PPE Boost Valve, Airdog 150, AEM HD intake, MBRP 5inch straight pipe, 20 inch eagle alloy 097, 33inch federal couragia mt
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