5.9 Carnage Pics

[MechanicMike]

This is an ISB 260 out of a 2006 ford f750. The driver was complaining a few weeks back about poor performance & white smoke from exhaust. We narrowed it down to a bad injector in cylinder 3. Replaced injector & tube. Truck ran good, no more smoke. The other night we towed the truck in. Driver said he heard a loud pop and truck shut down. Engine cranked funny like it had no compression in atleast one cylinder. Active code 2215 which is low fuel rail pressure. Isolate problem to cylinder 3 again. Pulled injector, found tip of injector hammered. Pulled head and found this. See attachments. Not to good with posting pics



Mike

 

[TimothyLong]

Ouch!! #@$%!

 

[B.G. Smith]

Dropped a valve??? bg

 

[TCDiesel]

Dropped a valve??? bg

My guess also, may have been able to save the Motor if!!! someone would have drop a scope and compression tested the hole. If you reuse the same sprayers on the new build you will be looking at this again (Likely)#@$%!

 

[MChrist]

So here is my guess. Bad injector in #3 caused valve to crack, but not break. Injector got replaced, and ran fine until damaged valve let loose, taking out injector and everything else?

Not a mechanic, so does this sound close?

 

[Shadrach]

Cummins has a salvage sleeve for repairing a damaged hole. It is p/n 3904166. Make sure you keep you original head gasket for reference so that you can install a new one that is the same thickness. There is a tab ( actually 2 of them ) on the side of the old head gasket. It will have either 1 or 2 holes in it. The new head gasket kit comes with both thin and thick head gaskets in it. Just use the one that has the same number of holes in it. Technically if you bore a hole or install a salvage sleeve you are supposed to use an over size ( bigger bore hole ) head gasket, but most people I know don't bother. Shad

 

[MechanicMike]

Yeah dropped a valve. Suspect it had previous damage from the injector failure. This is a fleet vehicle that sees alot of idle time and runs a bad quality b20 diesel fuel. Weve had a ton of lift pump failures due to fuel quality issues. Now that these trucks are getting up there in mileage ( this truck had only 80000 miles with over 10000 engine hours) high pressure pumps and injectors are starting to fail. Kinda workin its way through the fuel system. The higher ups never learn. Save a little now, spend alot later



Mike

 

[Shadrach]

" The higher ups never learn. Save a little now, spend a lot later "



Yeh especially if it fails during someone else " shift " or if they can stretch it another year and then transfer that truck to a different department. Anything to make them look good and impress the monkeys further up the ladder :-laf

Can you tell I'm not in management



Shad

 

[MechanicMike]

" The higher ups never learn. Save a little now, spend a lot later "



Yeh especially if it fails during someone else " shift " or if they can stretch it another year and then transfer that truck to a different department. Anything to make them look good and impress the monkeys further up the ladder :-laf

Can you tell I'm not in management



Shad

If it didn't say you were from Canada, I'd swear we worked for the same company... lol. I'm not management either, I refuse to drink the kool-aid



Mike

 

[MChrist]

MechanicMike, you said they run a low quality B20 fuel. . what makes it "low quality"? The fact that it's B20, or what??

 

[TCDiesel]

If it didn't say you were from Canada, I'd swear we worked for the same company... lol. I'm not management either, I refuse to drink the kool-aid



Mike

You got that right... its unreal how Stupid some people are, Once they have an agenda, I don't even acknowledge their existence with a reply. its just x amount of time you will never regain.

 

[MechanicMike]

MechanicMike, you said they run a low quality B20 fuel. . what makes it "low quality"? The fact that it's B20, or what??

No. I am not sure if its the supplier of the fuel, the company is purchasing the cheapest stuff they can find, the handling/ storage of the fuel ( proper tanks storage etc), wrong application ( running Bio in equipment not designed for it). Since switching over to B20 which was over a year ago, we have had increased problems with clogged fuel filters clogged with all types of debris from rusty sediment to a substance that resembles mayonaise. Gelled fuel problems in the winter months has increased as well. Not to mention the equipment that doesn't get used daily and sits with fuel in the tanks is almost guaranteed to be a fuel related break down.



Mike