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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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02-23-2013, 07:20 PM
| eBay Motors #1 (permalink) |
 Join Date: Feb 2013 Location: Des Moines, Iowa
Posts: 8
| Leaking Oil Out Of The Exhaust  I have a 01 Duramax, it started to leak oil out of the PVC and the exhaust. I just replaced the turbo, through it may fix the problem because there was oil in the intake side of the turbo , so now I am guessing a cracked piston or a blowing injector cup. It runs a little rough and blows lots of white smoke. Any tips on finding out what is wrong without starting to dig into the engine. Last edited by MAXX IT OUT; 02-23-2013 at 07:36 PM. |
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02-23-2013, 07:44 PM
| eBay Motors #2 (permalink) |
| DuramaxForum Enthusiast  Join Date: Jun 2011 Location: Bellingham, Wa
Posts: 2,764
| Is your oil over full? (Making oil?) You can run a compression test to know if you eff'd a piston. If youre making oil and its coming out its likely injectors
__________________ Gideon  01 LB7 EC/SB Ally 4x4 shop ornament DD: 1990 4runner completely stock 4x4 3.slow Big Thanks To Adrenaline Truck Performance, Alligator Diesel Performance, and Socal Diesel |
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02-23-2013, 08:39 PM
| eBay Motors #3 (permalink) |
| DF Sponsors   Join Date: Aug 2009
Posts: 396
| Another test you may want to attempt is a balance rate test. If you have a craked piston or bad injectors, that'll tell you as well as a compression test like stated above.
__________________ Looking for LB7 Injectors? Check these prices out!....   ......... Lincoln Diesel Specialties .........Phone: 920-765-1615 Click here For, LB7 Injector Install Instructions |
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02-24-2013, 04:44 AM
| eBay Motors #4 (permalink) |
| Join Date: Feb 2013 Location: Des Moines, Iowa
Posts: 8
| No it is not making oil. I have a stack and there is a drain hole in the exhaust. The oil is running pretty quickly. I just changed the oil when I put the new turbo in it, and the level is now low(after running for less then five minutes). I know that there are two DTCs, one is a cylinder misfire and all the codes are on #6. I can to a balance rate test quickly, but how is the best was to a compression test. |
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02-24-2013, 09:32 AM
| eBay Motors #5 (permalink) |
| Join Date: Feb 2013 Location: Des Moines, Iowa
Posts: 8
| Also what should my injectors balance be? |
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02-24-2013, 09:45 AM
| eBay Motors #6 (permalink) |
| DuramaxForum Enthusiast  Join Date: Sep 2008 Location: Beer Tent Capital of the World
Posts: 4,568
| Rates should be +/-4 in park. Here is something to try. Pull the oil fill cap off and fire up the truck. If you have a holed/cracked piston you should have some or a lot of blow-by coming out of the filler cap.
__________________ Jim __________________________________________________ _ 2003 Chevy 2500hd crew cab 4x4, D/A Just a few aftermarket goodies |
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02-24-2013, 12:22 PM
| eBay Motors #7 (permalink) |
| Join Date: Feb 2013 Location: Des Moines, Iowa
Posts: 8
| I bought the truck with a few mod, if there are injectors in the truck well the balance be different? Edit I mean aftermarket injectors. Last edited by MAXX IT OUT; 02-24-2013 at 03:46 PM. |
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02-25-2013, 02:55 AM
| eBay Motors #8 (permalink) | |
| DuramaxForum Enthusiast Join Date: Sep 2008 Location: Beer Tent Capital of the World
Posts: 4,568
| Quote:
ps: you need to fill out your sig, will make it a lot easier for us to help you out!
__________________ Jim __________________________________________________ _ 2003 Chevy 2500hd crew cab 4x4, D/A Just a few aftermarket goodies | |
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02-25-2013, 09:11 AM
| eBay Motors #9 (permalink) |
| DF Sponsors Join Date: Aug 2009
Posts: 396
| Your are correct the spec on your balance rates are the same as factory.
__________________ Looking for LB7 Injectors? Check these prices out!.... ......... Lincoln Diesel Specialties .........Phone: 920-765-1615 Click here For, LB7 Injector Install Instructions |
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02-25-2013, 01:45 PM
| eBay Motors #10 (permalink) |
| Join Date: Feb 2013 Location: Des Moines, Iowa
Posts: 8
| Thanks for the info...Sorry should of done my signature first thing.
__________________ 2001 Chevy 2500HD Red on black  Dual CP3, S366, ATS intake, 4in TB exhaust through a single 5in stack(for now), build ATS tranny with Co-Pilot, Snow stage II Water-meth, Edge attitude with juice(Needs to be EFI lived), and a Lift pump on the way. Engine rebuild starts 2-27-13  |
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