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#1
08-31-2009, 03:31 PM
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won't start....HELP!
Question guys: 04 LB7, will not start without ether... Ok, here's the scoop. While cranking over the fuel pressure is below cranking minimum. If you use ether, it will start and the pressure immediately climes to the desired. If you don't use ether it will not start, just cranks. Injectors have been tested, no air leaks, and am unable to control pressure with scanner while cranking. Pressure regulator also carries 12 volts the whole time. Any ideas? Could it be FICM? Key switch possibly? Help!!
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#2
08-31-2009, 04:36 PM
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Sounds like a weak cp3 we had the same problem. A good temp fix is a lift pump do u have one.? It has fixed our problem on one of our trucks and has been runnin good for about ten months so far since my brother lacks the mechanical skill And desire to fix the right way and pull cp3 out
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Special thanks to Mark and everyone at Danville. Mark you are a wizard on the Dyno.  2004.5 lly 2500 chevy 4x4 bullseye 475 turbo, efi live, carrillo rods, so cal pistons ,arp studs ,stock heads with spring kit and cam. Custom exhaust and custom w/a intercoolers ,200% exergy sticks,custom intake manifold made in house and twin cp3 pumps. Plus many other goodies!  also have a 2003 lb7 crew cab dually dark green mostly stock with stage five suncoast, full cognito front suspension semi 10 lug wheel kit with 19.5 alcoa's and s b intake
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#3
08-31-2009, 05:04 PM
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Quote:
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#4
08-31-2009, 05:25 PM
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Yes but prob would not be constant it would fluxuate
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Special thanks to Mark and everyone at Danville. Mark you are a wizard on the Dyno. 2004.5 lly 2500 chevy 4x4 bullseye 475 turbo, efi live, carrillo rods, so cal pistons ,arp studs ,stock heads with spring kit and cam. Custom exhaust and custom w/a intercoolers ,200% exergy sticks,custom intake manifold made in house and twin cp3 pumps. Plus many other goodies!also have a 2003 lb7 crew cab dually dark green mostly stock with stage five suncoast, full cognito front suspension semi 10 lug wheel kit with 19.5 alcoa's and s b intake
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#5
08-31-2009, 05:58 PM
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Stuck or bad regulator?
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07 RC/LB 2wd A/D lift pump,Tunes from Josh H, BD Manifold and custom up pipes, P&I supports, PPE tie rod sleeves 05 CC/LB EFI ,A/D lift pump,Cognito 7"lift /P&I supports / Banks air and exaust /ARP head studs/ Mike L stage 4 trans / EPR twins. Abby 01 RC/LB 10.28@144mph Arias pistons/ Howards rods / S475 & PBK twin turbos from EPR/PPE 2 CP3 / SoCal stg 2 heads & cam / 100 over sticks /Socal flexplate & dampner & girdle /DPR oil pump / Lenco-bruno trans /BD intercooler / Ted at MPL / turbo blankets from Levi
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#6
08-31-2009, 06:00 PM
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Wont the regulator go wide open if you unplug it? if so see if it'll start.
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 '01 Silverado 2500HD. Not Quite Stock.  Sheet Metal Workers Local #22 Creatures Of The Night Performance
ProFab Performance
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#7
08-31-2009, 11:41 PM
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I would think bad glow plug controller, starting fluid by the way will melt the tips off the glow plugs. Not sure how to test the controller though.
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#8
09-01-2009, 01:02 AM
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From personal experiance it is hard to stat at 160mpa
__________________
07 RC/LB 2wd A/D lift pump,Tunes from Josh H, BD Manifold and custom up pipes, P&I supports, PPE tie rod sleeves 05 CC/LB EFI ,A/D lift pump,Cognito 7"lift /P&I supports / Banks air and exaust /ARP head studs/ Mike L stage 4 trans / EPR twins. Abby 01 RC/LB 10.28@144mph Arias pistons/ Howards rods / S475 & PBK twin turbos from EPR/PPE 2 CP3 / SoCal stg 2 heads & cam / 100 over sticks /Socal flexplate & dampner & girdle /DPR oil pump / Lenco-bruno trans /BD intercooler / Ted at MPL / turbo blankets from Levi
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#9
09-01-2009, 01:06 AM
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yes it will  test light on the plug will show if they work,alos it should code if they are not working I run 15.5 to 1 with no plugs and mine still starts without either at 50f it doenst like it though.
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07 RC/LB 2wd A/D lift pump,Tunes from Josh H, BD Manifold and custom up pipes, P&I supports, PPE tie rod sleeves 05 CC/LB EFI ,A/D lift pump,Cognito 7"lift /P&I supports / Banks air and exaust /ARP head studs/ Mike L stage 4 trans / EPR twins. Abby 01 RC/LB 10.28@144mph Arias pistons/ Howards rods / S475 & PBK twin turbos from EPR/PPE 2 CP3 / SoCal stg 2 heads & cam / 100 over sticks /Socal flexplate & dampner & girdle /DPR oil pump / Lenco-bruno trans /BD intercooler / Ted at MPL / turbo blankets from Levi
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#10
09-01-2009, 04:34 AM
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Quote:
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#11
09-01-2009, 05:37 PM
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Well I would guess fuel also then....Just go easy on the diesel candy its rough on the plugs.
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