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Chevy/GMC Duramax 01-04 LB7 Discussion of Chevy and GMC Trucks with LB7 Duramax Turbo Diesel Engines

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  #1  
Old 03-29-2011, 09:00 PM
Diesel Fan

   

Default 01 injector balance rates normal

just wondering what is normal for the balance rates on lb7 injectors i have 2 at -2.1mm3 and 1 at 3.5mm3 all the other are at +-.7mm3 I pretty sure I have one or more cracked just trying to figure out which one or ones

bad64nova's Sig:2001 2500 duramax exsb stock
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  #2  
Old 03-29-2011, 09:39 PM
turbostang7's Avatar
Diesel Wrench

   

Default Re: 01 injector balance rates normal

Also interested so I will bump it up

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turbostang7's Sig:2002 crew cab silverado, lb7 duramax, ported turbo horn, bills intake, ppe boost valve, straightpiped efilive dsp5 from idahorob
"I always thought those were two little sandbags to keep floodwaters from floating into my bum" Peter Griffin
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  #3  
Old 03-30-2011, 07:23 PM
2500HeavyDuty's Avatar
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Status: Hot pockets?!?! THEY WERE LEAN POCKETS!!

   
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with ect at 160* min they should be:

+/- 4 in park
+/- 6 in drive

2500HeavyDuty's Sig:01' Dmax Ec/Lb: EFI Live tuned by me, Suncoast stage IV, Banks Intake w/ super scoop, 5" exhaust to 6" Stack, Ported intake Horn, Hybrid FPR, Coated CAC pipes, AirDog 150, Gauges, 35's Mounted on H2's lowered. and a Few more mods.
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  #4  
Old 04-04-2011, 10:49 AM
Diesel Fan

   

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I was told possibity of having return lines cracked and leaking fuel. Has anybody seen this?
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  #5  
Old 04-05-2011, 09:04 PM
2500HeavyDuty's Avatar
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Status: Hot pockets?!?! THEY WERE LEAN POCKETS!!

   
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happened to me, if the guy who installed the injectors torqued injector lines way too tight it can twist the injector in its hold down breaking the return line seal
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  #6  
Old 04-06-2011, 09:57 AM
Diesel Fan

   

Default

thanks for the info
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  #7  
Old 04-14-2011, 10:36 PM
Diesel Fan

   

Default

replaced all injectors and replaced lines too runs great thanks for the help guys
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