Duramax Diesels Forum Truck of the Week
  #16  
Old 04-08-2018, 09:51 AM
MolonLabe420's Avatar
MolonLabe420 MolonLabe420 is offline
DirtyMax
 
Join Date: Apr 2018
Location: SE PA
Posts: 45
Default

Quote:
Originally Posted by CarolinaHD View Post
Lb7 has the injectors and return lines under the valve covers so therefore if there is a fuel leak it will go into the crankcase and increase the oil level = making oil
Thanks for clearing that up. How long did it take GM to come up with a better design? I knew the early Dmaxs had leaking issues, I just never heard the term "Making Oil", I kept thinking everyone had a typo. (Im totally not up on my diesel lingo yet, except "rollin coal")

Quote:
Originally Posted by CarolinaHD View Post
As for oil pressure you need to put a mechanical gauge on the engine somewhere and verify that it's matching what the dash says. Otherwise it could be a faulty stepper motor for the oil pressure gauge or bad sending unit.
I think I have an old fluid filled mechanical somewhere... where is the easiest location to get an accurate reading?
I'm going to have to Google stepper motor some time... that keeps coming up

Quote:
Originally Posted by TheBac View Post
I hate to be "that guy" -- but the search function works pretty dang good here. Try to do that first, as everything you are asking has been covered a hundred times before....

Look in the Maintenance and Fluids section for your oil question. http://www.duramaxdiesels.com/forum/...ad.php?t=56857
I know, Im the newbie asking all the dumb questions that are no-brainers lol Im usually the guy annoyed with the newbies too, but now that guy is me, because like the title says, this is my 1st diesel anything... I know enough about diesels to know they are very similar and very different from a gasoline engine, thats about it.
Most forums are the same, a bunch of great Americans (and some not) with a wealth of knowledge, if you know how to find it. However, in many circumstances the searches dont result in what I was specifically looking for, they are usually just round about answers to other people's similar problems and questions, where as my questions and issues are something slightly different, resulting in me still not knowing what I was wanting to find out.
Or maybe I just dont have a clue what Im talking about or even looking at and Im just looking for some more reassurance or in depth conversation into an unknown world for me.
But I did search some stuff, Im just looking for other people's opinions on my particular situation... I didnt see anybody else having 6psi, thats why I keep asking about it and it's making me nervous. And the oil change thread is 8 pages of personal preferance... do I read thru all that and just jump on someones bandwagon? Whichever brand scored the most mentions? I've never even heard of Delo, but then again, I dont have a $50k truck with $30k dumped into it too lol. It's more efficient to just ask direct and specific.
I still havent convinced myself that the truck doesnt have major issues and that I didnt screw my family on this purchase.
__________________
4/4/18 - Bought my 1st diesel
2003 GMC Sierra 2500HD - Crew Cab, Short Bed
LB7, Auto, 4x4, Plain A$$ Interior, 135k





Thank You Mr. Trump!
God Bless America <3
Reply With Quote
  #17  
Old 04-08-2018, 09:54 AM
MolonLabe420's Avatar
MolonLabe420 MolonLabe420 is offline
DirtyMax
 
Join Date: Apr 2018
Location: SE PA
Posts: 45
Default

And thanks for the little check list Robby Avery
__________________
4/4/18 - Bought my 1st diesel
2003 GMC Sierra 2500HD - Crew Cab, Short Bed
LB7, Auto, 4x4, Plain A$$ Interior, 135k





Thank You Mr. Trump!
God Bless America <3
Reply With Quote
  #18  
Old 04-08-2018, 10:26 AM
duramax on fire's Avatar
duramax on fire duramax on fire is offline
Hotrodder
 
Join Date: Apr 2015
Location: dallas
Posts: 399
Default

Lly 2004.5 they changed design so the injectors are outside the valve covers.

Delo oil is a very good oil. And rotella t-6 for synthetic

Change the fuel filter asap if you havnt already done. Know matter if they said it was just done. At least drain it from the bottom. There is a drain. See what comes out. Make sure there's no water or brown crap.
Reply With Quote
  #19  
Old 04-08-2018, 11:05 AM
Burn Down's Avatar
Burn Down Burn Down is offline
Hotrodder
 
Join Date: Sep 2008
Location: Boise Idaho
Posts: 6,570

Default

First off do not run the truck anymore until you verify the oil pressure sending unit is reading accurately, put a manual gauge on it. 6 psi is very low and I doubt your getting much oil to the top end at that psi...
Reply With Quote
  #20  
Old 04-08-2018, 07:12 PM
Robby Avery's Avatar
Robby Avery Robby Avery is offline
GM TECH @ FENDER GMC
 
Join Date: Jul 2008
Location: Norman Park, Georgia
Posts: 660

Default

Quote:
Originally Posted by CarolinaHD View Post
Dude, there's some good info in here but you have got to start using punctuation or nobody is going to read your posts.
Sorry for the lack of punctuation. This tablet isn't friendly sometimes and doesn't do what I ask it to. Gotta love technology
__________________
2006 Chevy 2500HD LBZ Duramax Summit White CCSB Tan (neutral) leather LT3 pkg w/sunroof OEM bra 4x4, ISSPRO EV, ATS Twin CP3's, Built Allison, Eaton E-locker front stock G80 rear, Kennedy Twin pump filter combo kit, Snow Perf Stage 2 w/m injection, 4in to 5in banks tip, HM Big K&N, Mickey Thompson Baja Claw TTC 315/75/16 on stock rims, Rancho RS9000XL, Fabtech HD TR, Cognito P&I Brace kit, DD/Puller/Work Truck



2002 Chevy 2500HD LB7 Duramax Summit White CCSB Grey (neutral) leather LT3 pkg OEM bra 4x4, Kennedy Twin Pump Filter Combo Kit, ISSPRO EV, PPE Boost Valve, DTS Built Allison, MikeL Cooler, ATS Billet Flexplate, DTS 3in DS IC pipe, Bill's 5in CAI (White), Big K&N, 4in to 7in black stack, Mickey Thompson Baja Claw TTC 315/75/16 on stock rims, Cognito P&I Brace kit, Sleeves, Energy Sway bar Kit, DD/Puller/Work truck



Special Thanks: (David) DTS, (Guy) Socal Diesel, (Nick & crew) DuramaxTuner, (Dan) PPE, (John) Kennedy Diesel, (Tony) All Season
Reply With Quote
  #21  
Old 04-08-2018, 07:14 PM
Robby Avery's Avatar
Robby Avery Robby Avery is offline
GM TECH @ FENDER GMC
 
Join Date: Jul 2008
Location: Norman Park, Georgia
Posts: 660

Default

Quote:
Originally Posted by MolonLabe420 View Post
And thanks for the little check list Robby Avery
Not a problem just here to help buddy
__________________
2006 Chevy 2500HD LBZ Duramax Summit White CCSB Tan (neutral) leather LT3 pkg w/sunroof OEM bra 4x4, ISSPRO EV, ATS Twin CP3's, Built Allison, Eaton E-locker front stock G80 rear, Kennedy Twin pump filter combo kit, Snow Perf Stage 2 w/m injection, 4in to 5in banks tip, HM Big K&N, Mickey Thompson Baja Claw TTC 315/75/16 on stock rims, Rancho RS9000XL, Fabtech HD TR, Cognito P&I Brace kit, DD/Puller/Work Truck



2002 Chevy 2500HD LB7 Duramax Summit White CCSB Grey (neutral) leather LT3 pkg OEM bra 4x4, Kennedy Twin Pump Filter Combo Kit, ISSPRO EV, PPE Boost Valve, DTS Built Allison, MikeL Cooler, ATS Billet Flexplate, DTS 3in DS IC pipe, Bill's 5in CAI (White), Big K&N, 4in to 7in black stack, Mickey Thompson Baja Claw TTC 315/75/16 on stock rims, Cognito P&I Brace kit, Sleeves, Energy Sway bar Kit, DD/Puller/Work truck



Special Thanks: (David) DTS, (Guy) Socal Diesel, (Nick & crew) DuramaxTuner, (Dan) PPE, (John) Kennedy Diesel, (Tony) All Season
Reply With Quote
  #22  
Old 04-09-2018, 12:51 PM
MolonLabe420's Avatar
MolonLabe420 MolonLabe420 is offline
DirtyMax
 
Join Date: Apr 2018
Location: SE PA
Posts: 45
Default

So I started to changed the oil today.... I didnt get too far tho
After I finallyyyy got the plug out, 5 gal of diesel (faily clean looking) came roaring out!! Now my pan is TOOO full, I got nothing to dump it all in, and the flow wasnt slowing down as I threw the plug back in... It looks like some oil is dripping from the engine somewhere, subframe or whatever, some on the front diff... like a seal blew out or over-flowed out from somewhere. Is that possible?
My current obstacle is waste removal
__________________
4/4/18 - Bought my 1st diesel
2003 GMC Sierra 2500HD - Crew Cab, Short Bed
LB7, Auto, 4x4, Plain A$$ Interior, 135k





Thank You Mr. Trump!
God Bless America <3
Reply With Quote
  #23  
Old 04-09-2018, 01:01 PM
torqued2dmax's Avatar
torqued2dmax torqued2dmax is offline
Hotrodder
 
Join Date: Mar 2017
Location: Brookville, PA
Posts: 449
Default

Thank GOD you came to this site when you did you might have saved your eng thanks to some of these guys that told you NOT TO RUN THE ENG ANY MORE ! Now you have a good starting point ! Good luck , it will be an adventure though !
__________________
05 CC/LB DRW LLY Allison
AFE Blade Runner,AFE Momentum CAI,DHD Big Air intake Y pipe, DHD fuel block,DHD pcv reroute,MBRP 4 inch exhaust,DHD 3 inch downpipe,BD driver's side manifold,DHD pass side up pipe,DHD 3 inch intercooler hot&cold pipes, ATI damper,Empire pin kit by Big Foot on & off road shop, FASS fuel system,5/8 inch pickup, FASS fuel filter delete, EFI live,V2 & lap top , 5 position switch 250 hp big tune, shimmed fprv by Crank it up , built SunCoast Allison 1078 converter aftermarket trany mount by Limitless Diesel,ARP head studs,grade C gaskets,tig-welded water pump,T stats by Blackout performance,MA t case brace , Kriptonite motor mounts,MA pump rub kit,HD drive shaft 1480joints by Greensburg machine,BDS Recoil traction bars, PPE finned deep pan , Mike L trany cooler, PSC pump, 5100s, Sulastic Shackles, Curt com 2.5 hitch
Reply With Quote
  #24  
Old 04-09-2018, 01:56 PM
duramax on fire's Avatar
duramax on fire duramax on fire is offline
Hotrodder
 
Join Date: Apr 2015
Location: dallas
Posts: 399
Default

Quote:
Originally Posted by MolonLabe420 View Post
So I started to changed the oil today.... I didnt get too far tho
After I finallyyyy got the plug out, 5 gal of diesel (faily clean looking) came roaring out!! Now my pan is TOOO full, I got nothing to dump it all in, and the flow wasnt slowing down as I threw the plug back in... It looks like some oil is dripping from the engine somewhere, subframe or whatever, some on the front diff... like a seal blew out or over-flowed out from somewhere. Is that possible?
My current obstacle is waste removal
damn. you must have an injector return line leaking or an injector. Hope your decent with wrenches lol. Brent at lds sales true bocsh reman injectors. Cheap also and good people. Theres a lot of write ups on pulling the valve covers and injectors.

That engine can only hold so much fluid before it dumps it out a seal or the pcv tube which is in front of the motor pass side. good luck.

Did you figure out where the coolant is going? Is the oil cap dry under neither when it was warmed up or is there moisture there also?

Also go get some buckets with lids. That's what we use to store old diesel. Then we use it to burn or kill weeds lol
Reply With Quote
  #25  
Old 04-09-2018, 02:17 PM
MolonLabe420's Avatar
MolonLabe420 MolonLabe420 is offline
DirtyMax
 
Join Date: Apr 2018
Location: SE PA
Posts: 45
Default

I know! I hope the engine isn't junk. A rebuild might make my family homeless...
I started looking for a forum to join before I bought the truck.
Is there an oil overflow somewhere?

From the time the low oil sensor started dinging, I was at a red light (idling for like 2 min)(on a hill) 1/4 mile from Walmart. I pulled in and shut it down after confirming with the Edge CS that the EOP was 6 psi. From Walmart, I went straight home right from the highway, about 6-7 miles, only had to idle like 2 times, maybe 60 seconds each. As long as I was diving and giving it some throttle, EOP was up around normal. What would cause that?
__________________
4/4/18 - Bought my 1st diesel
2003 GMC Sierra 2500HD - Crew Cab, Short Bed
LB7, Auto, 4x4, Plain A$$ Interior, 135k





Thank You Mr. Trump!
God Bless America <3
Reply With Quote
  #26  
Old 04-09-2018, 02:35 PM
duramax on fire's Avatar
duramax on fire duramax on fire is offline
Hotrodder
 
Join Date: Apr 2015
Location: dallas
Posts: 399
Default

these are tough motors. I would bet its fine. If it was mine I would get all that crap out of the motor then put some fresh oil and filter back in. fire it up for a few seconds or so to get some good oil on the bearings. Then you need to start searching where the diesel is entering. Only 3 possible spots. Injectors, return lines, or cp3 pump. No oil overflow besides the pcv or filler neck if it gets that high lol. You had decent pressure with higher rpms because the oil pump will still pump any fluid that is in there. but at idle they drop low because of the thin fluid.
Reply With Quote
  #27  
Old 04-09-2018, 02:43 PM
LBZ's Avatar
LBZ LBZ is offline
Super Moderator
 
Join Date: Jul 2007
Location: Ontario
Posts: 10,073

Default

My guess is the leak is under the valve cover as previously mentioned. Your best bet to figure out what it is exactly that's leaking is to get some cheap fresh oil in the truck, remove the rocker covers one side at a time and fire it up each time and check for fuel leaks from the fuel return lines and high pressure fuel lines. Could be either one or two lines or banjo fittings are leaking.

Once you figure it out and get it all sealed back up change the oil and filter again with good quality oil and giv'r.

Was your coolant actually low when you checked it or just the code and message was coming up?
Reply With Quote
  #28  
Old 04-09-2018, 02:55 PM
ZeroGravity58's Avatar
ZeroGravity58 ZeroGravity58 is offline
Hotrodder
 
Join Date: Mar 2008
Location: Maryland
Posts: 842

Default

Where you buy the truck from? Sounds like to me with all the codes someone was working on it, gave up and put it for sale. I had an injector go bad and fill my old lb7 up with diesel while on my way to vacation. I changed the oil on the side of the road and drove it back home. There are some good shops around if you don't want to replace injectors.
__________________
09 lmm ccsb ltz, ATP tuning, mpi s480 over stocker, sdp y bridge, big dipper trans, 60 overs, 10mm pump, ppe up pipes and manifold, banks intercooler & exhaust, airdog165, isspro guages, traction bars, the list goes on
01 lb7 red RC/LB 11.58@119 MPH, SOLD
01 lb7 Black CC/LB, SOLD
Reply With Quote
  #29  
Old 04-09-2018, 04:10 PM
MolonLabe420's Avatar
MolonLabe420 MolonLabe420 is offline
DirtyMax
 
Join Date: Apr 2018
Location: SE PA
Posts: 45
Default

Quote:
Originally Posted by duramax on fire View Post
these are tough motors. I would bet its fine. If it was mine I would get all that crap out of the motor then put some fresh oil and filter back in. fire it up for a few seconds or so to get some good oil on the bearings. Then you need to start searching where the diesel is entering. Only 3 possible spots. Injectors, return lines, or cp3 pump. No oil overflow besides the pcv or filler neck if it gets that high lol. You had decent pressure with higher rpms because the oil pump will still pump any fluid that is in there. but at idle they drop low because of the thin fluid.
It was probably another dumb newbie question, but I asked about an oil overflow because a ton of CLEAN diesel came out. And I only got 5 gallons out so far, who knows how much is still in there... I also have dirty oil dripping down from somewhere higher up, so I thought maybe it was past the point of "making oil", that now it was over flowing and the oil:fuel was 100% opposite! It still has me a little nervous lol.
The trans is pretty clean tho, besides the old crappy looking Napa filter.
I guess I have a fuel leak and an oil leak.
When my wife gets home I need to go to some store to find something big enough to dump my whole 5 gal pan in, and still more.

Quote:
Originally Posted by LBZ View Post
My guess is the leak is under the valve cover as previously mentioned. Your best bet to figure out what it is exactly that's leaking is to get some cheap fresh oil in the truck, remove the rocker covers one side at a time and fire it up each time and check for fuel leaks from the fuel return lines and high pressure fuel lines. Could be either one or two lines or banjo fittings are leaking.

Once you figure it out and get it all sealed back up change the oil and filter again with good quality oil and giv'r.

Was your coolant actually low when you checked it or just the code and message was coming up?
When I take off the rocker cover, will I be able to see fuel squirting?
Whats a banjo fitting?

I already bought some Rotella T4 and a Mobile 1 oil filter and a ValueCraft fuel filter (couldnt get an AC Delco anywhere)

Yeah my coolant was a little low. it had some green stuff init, so I put some green stuff back in... probably like 1/2 gal, maybe less. Still havent started it tho, so Idk whats going on with that yet.

Quote:
Originally Posted by ZeroGravity58 View Post
Where you buy the truck from? Sounds like to me with all the codes someone was working on it, gave up and put it for sale. I had an injector go bad and fill my old lb7 up with diesel while on my way to vacation. I changed the oil on the side of the road and drove it back home. There are some good shops around if you don't want to replace injectors.
Got it from a used dealer... problem #1 probably.
Yeah I think some of the codes may be from the CAI and 4", maybe the EGR is already deleted, I still didnt look up where to find that stuff.
Everything seemed and looked fine. I ran it thru all the gears, saw 18 # boost, EOP didnt budge, coolant temp stayed steady, nothing leaking on the ground...

Once I get fresh fluids in there, how long can I run it before needing to drain and refill again?
__________________
4/4/18 - Bought my 1st diesel
2003 GMC Sierra 2500HD - Crew Cab, Short Bed
LB7, Auto, 4x4, Plain A$$ Interior, 135k





Thank You Mr. Trump!
God Bless America <3
Reply With Quote
  #30  
Old 04-09-2018, 05:06 PM
LBZ's Avatar
LBZ LBZ is offline
Super Moderator
 
Join Date: Jul 2007
Location: Ontario
Posts: 10,073

Default

If it's a bad enough leak you should be able to see it. It's common for the return lines to crack and the seals to leak. It might even be as simple as a loose injector supply or return line fitting.

I attached a couple of pics of the return line and banjo bolt. There are also seals that go on there. There are lots of vendors on here and across the interweb to choose from.

I wouldn't run it any more than you need to till you fix it. As far as the oil leak, your rods were swimming so I wouldn't worry to much about that at this point because if your oil pressure doesn't come back your probably going to need a motor rebuild anyways.
Reply With Quote
Reply


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT -7. The time now is 10:35 PM.


Powered by vBulletin® Version 3.8.9
Copyright ©2000 - 2018, vBulletin Solutions, Inc.
vB.Sponsors