Head gasket leaking? - Chevy and GMC Duramax Diesel Forum

06-07 LBZ & LLY 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, Etc.

 
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post #1 of 4 (permalink) Old 12-07-2010, 06:06 PM Thread Starter
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Head gasket leaking?

ive got a 06 LBZ that I bought in august and has been great! put it on the lift at work about a month ago and looked over everything and noticed oil leaking from the rear of the passenger side head right where the head and block meet. now i checked everything and ive got no symtoms of a blown head gasket. I cleaned the oil off and checked it last week and still wet around it with oil. anyone experience this before or know what i can do?


06 LBZ
12.8 1/4
EFI live DSP5
transgo jr
S&B intake
5" exhaust
Fass 150
EGR delete
PCV reroute
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post #2 of 4 (permalink) Old 12-07-2010, 06:10 PM
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Might be the PCV syatem dumping oil into the Turbo and pushing it out-- common to have oil in the boost system. You can reroute the system and the engine will stay cleaner!

Also another possibilty is a leaking valve cover gasket, or a turbo drain tube. You need to inspect it closer.

Chevy 04.5 LLY, 2X, shell, XDR, MikeL Heavy duty up-grade, 6spd, TransGo, deep pan, de-badged, 65 Gallon replacement Aero tank, LBZ-mp, Kennedy pump, shimmed, Pre-fuel filter, tow mirrors, BU cam, gauges, GPS, Sirius, bags, custom grille, fender vents, HD trans cooler- Curt front hitch, footwell lights, load lights, Studs, head gaskets.--- Jerry
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post #3 of 4 (permalink) Old 12-07-2010, 06:12 PM
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man i don't know, i would think it would be coolant not oil comin out, since the coolant would get through easier, are you sure it's not comin from somewhere else and just collecting there? could be the egr leaking or something. i don't know though sorry.

NEW TRUCK- 2006 LBZ cc/sb loaded southern coach, smoky mountain sportsman edition, 20" black hostile havoc's, 305/50/20 nitto trail grapplers, EFI LIVE by rob at ATP performance, 5" exhaust, transgo jr, egr blocked, pcv rerouted, isspro ev2 gauges, tinted windows, just gettin started!
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post #4 of 4 (permalink) Old 12-07-2010, 06:19 PM Thread Starter
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ive got the pcv reoute and egr block. i used brake cleaner and made sure it was all clean and dry a month ago and its wet right where the head and block meet.


06 LBZ
12.8 1/4
EFI live DSP5
transgo jr
S&B intake
5" exhaust
Fass 150
EGR delete
PCV reroute
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