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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 Ect

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Old 11-19-2012, 03:02 PM   eBay Motors  #41 (permalink)
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If you mean loping.. Thats usually too much fuel. Caused by a leaky injector. I was hoping you would say that it only smokes when cold and lopes while warming up. That would probably just be a failing FPR or tuning issue. Just was looking to give you a little ray of sunshine but you blew that when you said it smokes when warmed up... Sorry!
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Old 11-19-2012, 03:08 PM   eBay Motors  #42 (permalink)
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Hey you tried so thank you ya when you would think it would do it when its cold but soon as I get to around 140 temp its like a train and as soon as I saw that I parked it
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2002 GMC Duramax lb7 crew cab short bed
4 inch magna flow exhaust down pipe back
,ppe boost valve.
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Old 11-20-2012, 03:46 AM   eBay Motors  #43 (permalink)
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Just out of curiosity what's the FPR. I started it back up and yes I get smoke when cold not to blue though, I'm also removing the chip completly
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2002 GMC Duramax lb7 crew cab short bed
4 inch magna flow exhaust down pipe back
,ppe boost valve.
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Old 11-20-2012, 04:13 AM   eBay Motors  #44 (permalink)
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FPR is the fuel pressure regulator. Its on the CP3 (High pressure pump) in the valley of the engine. You can see it down in there if you look between the Alternator and thermostat cover. Its the only part dow there with a 2 wire harness connected to it.
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2001 GMC Sierra 2500HD, CC,SB
EFI Live V2 w/dsp5 MAX EFFORT by Idaho Rob,
EGT's Never higher than 1150*
Cognito Braces, and ATP Sleeves, BD Manifold, ARP H.Studs, M.P. mod, MA Aluminum Bleeder, PPE Boost Valve, Banks Ram Air- Intercooler, FASS 150, LBZ FPR, Shimmed FPRV, 4" MBRP turbo back exhaust w/6"tip, Corsa Muffler
@180,000-New injectors from Lincoln Diesel, CAT Adapter/filter/spacer

Air Lift, Bilstein Shocks, Leveling Kit, Recon LED tail lights & over cab lights, 20" Forged Aluminum WELD Racing Rims, 295/55/20 Nitto Trail Grappler Tires
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Old 11-20-2012, 04:23 AM   eBay Motors  #45 (permalink)
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Ok ill take a gander at it this morning. Second is this a multi meder test or pressure check?
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2002 GMC Duramax lb7 crew cab short bed
4 inch magna flow exhaust down pipe back
,ppe boost valve.
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Old 11-20-2012, 07:07 AM   eBay Motors  #46 (permalink)
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Quote:
Originally Posted by edged lb7 View Post
Can balance rates be adjusted?
Yes, with new injectors.




I have fresh injectors and the truck stinks like fuel when cold, when its night I can shine a light through the exhaust gas and see haze... You think the FPR is failing?
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Old 11-20-2012, 05:25 PM   eBay Motors  #47 (permalink)
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Well changed the oil and towed my dads 38 ft fifth wheel the other day and it towed great no problems lots of power and while towing no smoke only at idle lol wtf also my truck is loping like it has a lope tune .......
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Old 11-20-2012, 06:05 PM   eBay Motors  #48 (permalink)
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Ugh I've got no idea ill get white smoke when its cold that and its 10 degrees outside! And my truck just started acting up after an oil change and fuel filter
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2002 GMC Duramax lb7 crew cab short bed
4 inch magna flow exhaust down pipe back
,ppe boost valve.
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Old 11-20-2012, 07:44 PM   eBay Motors  #49 (permalink)
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If your truck lopes Hard when idling it's more than likely a failing FPR. The best way to test this is 1st watching the rail pressure's actual vs. desired on a Tech2, EDGE CTS or EFI Live. The 2nd way if you dont have a way to check your rail pressure is by unplugging the FPR wires when its loping and see if it changes at all. If not its a bad FPR. When the FPR fails the Fuel pressure goes to 100%
__________________
-Aaron-
Lincoln Diesel Specialties
"Quality Parts and Service at an Unbeatable Price"

Or call us... 920-765-1615


SOLD
2001 GMC Sierra 2500HD, CC,SB
EFI Live V2 w/dsp5 MAX EFFORT by Idaho Rob,
EGT's Never higher than 1150*
Cognito Braces, and ATP Sleeves, BD Manifold, ARP H.Studs, M.P. mod, MA Aluminum Bleeder, PPE Boost Valve, Banks Ram Air- Intercooler, FASS 150, LBZ FPR, Shimmed FPRV, 4" MBRP turbo back exhaust w/6"tip, Corsa Muffler
@180,000-New injectors from Lincoln Diesel, CAT Adapter/filter/spacer

Air Lift, Bilstein Shocks, Leveling Kit, Recon LED tail lights & over cab lights, 20" Forged Aluminum WELD Racing Rims, 295/55/20 Nitto Trail Grappler Tires
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Old 11-21-2012, 05:39 AM   eBay Motors  #50 (permalink)
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Alright ill check it out. Basicly one last swing at before injectors. Thank you for your help.
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2002 GMC Duramax lb7 crew cab short bed
4 inch magna flow exhaust down pipe back
,ppe boost valve.
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