[Diesel Nut]

I have a customer who was up in the mountains today skiing. Well, he went to start his truck and it started knocking like someone was hitting it with a 4 lb hammer. No warning. So, truck is on its way to the dealership and my customer is boiling, on his way home, about 200 miles the other direction!

I am thinking it threw a rod.

Also, FWI - Its one of the limited edition trucks with the cooling/oil pressure issues. Should be interesting . . . .

 

[Tow Master]

Hope you didnt sell him any aftermarket items! Everyones sue happy these days. How many miles where on the truck? Still under warranty?



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[05_LLY]

Depending on milage could just be a worn rod bearing unless he is pushing big power or running drugs then it could have easilly shortend a rod IIRC it only takes a small amount of bend to make the piston skirt hit the crank weight!

 

[Diesel Nut]

35k miles, edge juice/attitude only, usually on level 2 or 3.

I have only heard the kind of noise his was making when I blew up an 8.3L Cummins in Korea. it has 3 rods sticking out of the motor and was still running!! After the truck has gone through 2 turbos and with the cooling problem I am sure he has already called his lawyer. We'll see.

 

[alkyhaul]

Air'd Up?

I have seen many an aired up diesel (in the fuel system) start up and sound like its gonna come all undone, and I mean loud. If I didnt know better I would have said the rod bearings were out, or rods were bent...

Is there possibility of air with these new EFI diesels???

Air can come in from a fuel filter gasket, or semi loose line connection (cooling off, shrinking down, and creating a vacuum in the system, pulling in a small amount of air, where increased temp / pressure extrudes the seals so fluid wont leak out)

Just cant see a perfectly fine running engine (special edition with oil problems or not) when he shut it down blowing a rod upon restart...without it A) being out of oil, or B) having an obvious problem when he shut it down. I would be interested to hear the "rest of the story"...:cool

 

[TravelswithCharly]

Also, FWI - Its one of the limited edition trucks with the cooling/oil pressure issues. Should be interesting . . . .

what issues?

 

[Duluth Diesel]

I heard one with a head gasket that blew that sounded like a helicopter and shook like mad. That would be the nicer problem to have rather than something in the bottom end.

-Chuck

 

[SANCGCS]

Bad injector

 

[minisub]

Or injector harness....

I assume this is on an LLY given the cooling comment....

Got any codes?

 

[[email protected]]

I would be looking at the injectors as well. A sticky injector knock to someone who doesnt know can sound really bad. This is fairly common in these. Hope it works out for him.

 

[Diesel Nut]

Well, after some time at the dealer it turned out to be the injector harness. The left bank was not firing at all. I can tell you thats not what it sounded like over the phone, but ok. The truck is still running fine now, so whatever they fixed, seems to have fixed it.

 

[Duluth Diesel]

Left bank not firing at all? Yeah, I bet that made a noise.

Glad it is fixed!

-Chuck