Sounds like a rod is letting go

[Joseph Donnelly]

I agree with sag2. You can't see what is going on from the outside, and you have removed the injector from consideration by replacing it.

 

[JJPage]

Any new information yet, on what you have found?

 

[LRohr]

Any new info?

 

[doldenburg]

what did you find?

 

[ktimmer]

I replied to this last year but I lost the oil cooling nozzle on #4. The 1st diagnosis was an injecter went bad in #4 and it was bored, sleeved and rebuilt. 8000 mi later I had a tick and 0 oil press for 2 min. Pulled head again, and same piston was toast. They determined that it was the cooling nozzle. A different shop missed that on the 1st rebuild. 1st shop admitted their error and footed $8000 of the $11000 2nd bill. But not without words. This was in Hobbs, NM. Never had any more problems after the 2nd shop fixed it. My brother now owns the truck and it still runs great. Hope this helps.

 

[DToy]

My truck sounds alot like that video, but it has for over a year and still seems to be running fine. Would love to hear from the original poster as to what he figured out.

 

[MStaggs]

After almost a year and 1/2, my truck is running again.



I had someone come and do the injector kill test = Nothing
Valvetrain = good
Flexplate and converter bolts = good

I do not have the equipment or experience to remove the head or motor, and I exhausted every other possible avenue. I finally found a reputable shop that was somewhat close to me.

Dieseldemon was right - scuffed #6 piston. Piston skirts were severely worn and this chewed up the bore. I guess the additional drag also pounded the rod bearing a bit.

Everything else in the motor looked brand new.

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[MStaggs]

Sent the injectors out to get flow tested.



One "failed high" and four others were not flowing properly.



This must have been what caused the damage on #6.



Every other piston, bore, etc looked absolutely perfect.

 

[MStaggs]

After looking at re-built crate motors, salvage motors etc, we decided to rebuild my motor.



The block was sent out and bored . 020 over, line bored, decked etc.

The head was sent out and decked, new exhaust valves, new springs etc. We also put it on with ARP head studs.

They ordered up new Cummins . 020 over pistons and new Cummins rods.

The crank was sent out and only needed polishing (luckily).



So my motor is all newly rebuilt with a bit more compression and the newer version of the pistons.



Here are some more pics -



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[MStaggs]

All fresh and going back together -



Pistons going in -

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New . 020 over Cummins pistons -

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New piston/rod assembly -

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[HOBrian]

That's some really nice looking eye candy!! Glad to see your getting her back together!!!

 

[MStaggs]

Everything all torqued up in the bottom end -

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Painted the block so she looks nice -

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[MStaggs]

And then they had to shoe-horn it back in -



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[MStaggs]

One wierd/frustrating thing happened.
After just 100 miles on the new engine, one of the re-man injectors failed.
It did not cause any damage but JEEZ, I cant catch a break!

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They replaced the injector and all is good.

I now have 141 miles on it.

So it is all newly re-built with a few more cubes, a bit more compression, ARP head studs, and an upgraded turbo (from Bell Turbo).
Every hose, the water pump, the oil pump, etc is new (the CP3 is unchanged as it checked out perfect).

After I get it good and broken in and get the new tags, I will get on to doing some upgrades.

It runs much better than it did even when I first brought it home from the dealer.

From the day I had it towed to Industry Diesel, I picked it up only TWO WEEKS later.

Those guys don't mess around and really know how to take care of a customer.
I HIGHLY recommend them.

 

[HOBrian]

Awesome!!!! You must feel like the weight of the earth is gone! Glad you have your truck back!

 

[MStaggs]

Awesome!!!! You must feel like the weight of the earth is gone! Glad you have your truck back!

I do!



I cant believe how much I missed not driving my truck.



Thanks