oil dump - 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 Ect

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Old 01-04-2011, 10:27 AM   eBay Motors  #1 (permalink)
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oil dump

I need a little help and or advice, last thursday I was driving to the desert with the family and noticed a slight vibration at a stop light went about another 20 miles and pulled to get fuel, found about 2 -3 qts oil under the truck and the undercarriage covered, coulndnt find any thing from the top, turbo hose or heads, couldnt see the rear main of course, it should be at the shop today. Again any insight would be great
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Old 01-04-2011, 10:31 AM   eBay Motors  #2 (permalink)
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Do you have a PVC reroute?
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Old 01-04-2011, 10:37 AM   eBay Motors  #3 (permalink)
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dont believe the lb7 has that could be wrong though
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Old 01-04-2011, 10:39 AM   eBay Motors  #4 (permalink)
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.... not sure.

Bump for ya

Good luck getting it resolved and let us know what you find!
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Old 01-04-2011, 12:39 PM   eBay Motors  #5 (permalink)
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Sorry 2 say but it sounds like injectors. How was your oil level? Did it smell of fuel?
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Old 01-04-2011, 12:43 PM   eBay Motors  #6 (permalink)
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The dreaded injector curse.....
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Old 01-04-2011, 04:05 PM   eBay Motors  #7 (permalink)
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thanks for the input guys just got the truck back to the house and started looking for the reason for the oil spray on the under carriage and side of the engine found that it was coming from the tube by the vacumn pump so i checked the oil level again and found it to be high. draine about 6 -7 gallons out. Just las april I replaced them bought them through Pensocola diesel. Wont do that again
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Old 01-04-2011, 04:14 PM   eBay Motors  #8 (permalink)
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6-7 GALLONS? Am I missing something??? That is not a little high... what, did they forget they filled it and just kept adding oil?
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Old 01-04-2011, 04:28 PM   eBay Motors  #9 (permalink)
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i've heard nothing but bad from pensacola.
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Old 01-04-2011, 04:34 PM   eBay Motors  #10 (permalink)
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Quote:
Originally Posted by MRCapps View Post
6-7 GALLONS? Am I missing something??? That is not a little high... what, did they forget they filled it and just kept adding oil?
Most of the time when LB7 injectors go bad they dump fuel in the crankcase. Someone didn't fill it up that much.
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2004 GMC 2500HD D/A CC Carbon Metallic w/ LB7
4" turbo back MBRP exhaust, Cognito UCAs & HD tierods
TST Powermax Programmer, Diablosport Predator
305/70-16 BFG T/A KOs on Eagle Alloys Series 187
Clifford remote start. High Idle, Bilstein 5100s, 1.5" lift blocks
CAT fuel filter w/ nicktane adapter
Magnum Force Stage 2 intake with AMSOIL filter
Racor 2 Micron pre-OEM with heater & water sep
Lightforce 140s from Madjackracing
http://WWW.ATPTRUCKS.COM/

Last edited by ob_1jr; 01-04-2011 at 04:47 PM.
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