Today my wife took our truck to Indianna for the day. Upon arriving at her destination she smelled oil and noticed a great deal of oil under the vehicle. Imeditly she had the truck taken to the nearest GMC Dealership to have the problem investigated. The tech told her that there was diesel in the oil... and that they'll have to tear down the engine to find the problem.

Any ideas on what the problem might be...

thanks,

Kelly Campbell

Gimmie a I gimmie a n gimmie a J gimmie e gimmie a c gimmie a t gimmie a o gimmie a r gimmie a s What does it spell?

Injectors

Hope your wait isn't long waiting for parts.

Mac

If you had that much fuel dump in the motor to cause an oil leak, you could be looking at major problems. Like I posted before, the fuel will "wash" away the oil from the bearings and so on. I'd ask the dealer to do a little investigating before taking the truck back.jmo

Gimmie a I gimmie a n gimmie a J gimmie e gimmie a c gimmie a t gimmie a o gimmie a r gimmie a s What does it spell?

Injectors

Hope your wait isn't long waiting for parts.

Mac
Very Funny......):h I knew it was only a matter of time before I got bit...Is there anything that can be done to prevent this?

Kelly

If you had that much fuel dump in the motor to cause an oil leak, you could be looking at major problems. Like I posted before, the fuel will "wash" away the oil from the bearings and so on. I'd ask the dealer to do a little investigating before taking the truck back.jmo
My wife told me today that there tearing out the motor to find what damage might be done

thanks,
Kelly

Good, I just read about another member that said he had his injectors replaced three different times. He said each time the oil pressure would get lower and lower until he ended up replacing the motor.:(

They'll replace your injectors and maybe your fuel reg valve.

Though bearing wash may happen to some extent, good luck with anybody getting GM to pay for bearing replacement. If you do let us in on the secret.

In the more then a few times I have heard of crankcase filling of diesel has there been one failure of a engine and its internal components.

I wouldn't have many concerns unless I was close to warranty end.I'd ask that GM run some full oil analysis and get samples for independent testing.That and a few oil flushes and enjoy your Max.

Best wishes, I just had mine done and all went very well.


Mac

I'm used to working on the bigger diesels so there may be a bigger difference there than in the dmax, but we always drop the pan and check the lower end for scorched bearings.

We had an 02 come in with fuel/oil spewing out of the crankcase, another tech had his apprentice do the injectors, filled the crankcase again on the test drive, this time it had a definite miss and severe blow-by w/white smoke coming out of the breather, our engine guy called GM they said absoloutly NO new engine, he tore it down to measure stuff,per GM, found out the apprentice dropped one of the copper seals off the injector, it was stuck in a valve spring. That was the cause of the "blow-by", but the fuel in oil was because he forgot to tighten the return line fitting right next to it. So it turns out that not all need an engine... YET. Demand that at least GM double the engine warranty for you, that is what they did for this guy.

We had an 02 come in with fuel/oil spewing out of the crankcase, another tech had his apprentice do the injectors, filled the crankcase again on the test drive, this time it had a definite miss and severe blow-by w/white smoke coming out of the breather, our engine guy called GM they said absoloutly NO new engine, he tore it down to measure stuff,per GM, found out the apprentice dropped one of the copper seals off the injector, it was stuck in a valve spring. That was the cause of the "blow-by", but the fuel in oil was because he forgot to tighten the return line fitting right next to it. So it turns out that not all need an engine... YET. Demand that at least GM double the engine warranty for you, that is what they did for this guy.
I'll have to remember that, we bought the truck earlier this summer used and have not needed to do any maintince on it other than an oil change which was done earlier last week.

thanks
kc

I'm used to working on the bigger diesels so there may be a bigger difference there than in the dmax, but we always drop the pan and check the lower end for scorched bearings.
Ozzy,

I aggree with you totaly. That would be the prudent, conservative thing to do. But I can see why a manufacturer would not want to even go there. How many miles were on engine, how much wear was due to the fuel wash verses how much wear was caused by the owner.

That would get stinky real quick! :rolleyes:

I think that's why it just easier for GM to say NO and see how much "grease" it takes to make the customer happy.

Crappy way for business, but then again, there is a poopload of Dmax's out there.

RE: 02 Silverado 2500HD, crew cab, 4x4. 64,000 miles. Towed my new toy hauler for the first time, 6700 lbs. the check engine light comes on, dealership checks it, injectors. Pick truck up 4 days later, wife drives it 10 miles home, pulls in driveway and coolant pouring out from under motor, steam, the whole bit. Pop hood, radiator hose is off, tech neglected to tighten hose. Next day after tow, dealer checks truck and says truck didnt get hot and was not harmed. 3 days later batteries go dead dealer says replace so I did, $240. Wife picks up again, drives 15 miles and low coolant light comes on. Go back to dealer they say an injector sleeve was not put in correctly, pumped coolant wherever coolant goes when that happens. They get further into it and detect bubbling in one of the thermostats, they pull the heads and find a bad gasket and say it got hot. Wait, first they said it didnt get hot. Anyway, they're saying it was just the gasket and the heads and motor are OK - How can I believe this? I Initially got GM USA involved, said I want an ext. service contract and they said NO, because the dealer says truck is ok. that was before dealer found head gasket problems. Any advise anyone?:(

I wouldn't worry about "bearing wash". That's a term that's usually applied to 2-stroke oil/fuel mix engines (or engine with way excessive oil pressure), how it found it's way to a site that deals with 4 stroke diesels is beyond me. Hell, the proper way to store engine components waiting to be assembled after cleaning (whether it's 1 day or 10 yrs) is soaked with diesel fuel. Thats how we did it in the Navy, & thats how i've been doing it in my shop for many years. We assemble them (gassers & diesels) soaked with diesel fuel. Assembling with motor oil may inhibit/interfer with properly setting tolerences due to it's lessor ability to flow (& that's a chance i'm not willing to take with someone elses wallet). Diesel fuel is loaded with lubricating qualities.

Never-ever-ever had a problem regarding diesel fuel & engine bearings. That includes in ships, boats, trucks, cars, motorcycles (& those are Harleys pushing 150hp,talk about tempermental,nothing like air cooled engines for a challenge involving lubrication) :ro)

Found out from the dealership yesterday that....drum roll please...the injectors have gone bad, and of course there on backorder. So now its a waiting game for the parts, I still need to call the dealership to find out for myself what's going on with it. I'm correct in that all eight injectors should be replaced???
I do have this much to say, you really never notice how much you really use and how useful your truck is until your without it for a day or two. My wife's the director of Kentuck Lab Rescue and uses the truck to transport dogs all over the place. Being with out it has made it a little harder to transport dogs, when we could transport four or five and now can only transport one or two it makes it interesting.

Loki nine,
Isn't diesel fuel a little bit too low in viscosity for initial start-up?

Gimmie a I gimmie a n gimmie a J gimmie e gimmie a c gimmie a t gimmie a o gimmie a r gimmie a s What does it spell?



Mac

I dont have anything intelligent to add, but the idea of Mac in tights waving pom-pons is just downright scary. -:t


Tom :eek: