Dead Cylinder
 

So the story begins while on a 500 mile trip at about 450 miles or so, got the cruise set at 75 while coasting down a hill... Start to return up the next hill and POP! It continues to pop thru the exhaust and obviously has a dead cylinder. Pull over looking for blow by, oil, ect. All i find is fuel leaking from between the exhaust manifold and head. Being as im going to school in Indy had to have it towed the other 50 miles and with no place to tear into it at i had to resort to calling the ole' dad! Im not happy about this, because automatically the jokes start (duramax guy). I have never had any problems with this truck, no blow by, never had anything wrong with it that isnt reasonable, like starters and things like that. He calls me today with results to some research and it seems to be an injector. Has anyone else just had an injector take a poop all of a sudden like this? We arent for certain but it all adds up because number one cylinder was completly dead. So he swapped number one with number two injector and now number two is the dead cylinder. We have an injector coming in the morning to say 100% what it is. Any insite would be helpful, thanks in advance!

Like anything mechanical, they get tired and do fail. I wouldnt worry if the #1 fired with the other injector :tu:

how many miles are on your injectors? over time if the pop press fades enough it can cause pintle problems

I was bragging on the truck that night because it just rolled over 294k. I have been trying to narrow down a rough idle issue in the summer time and have wondered if the injectors having that many miles on them and pop pressure possibly being low if that would cause it.

Tell the dad to talk when he has 294k on the Dmax :c:

yeah, low pop pressure can cause a hazy low idle. At least thats what mine did when a few were 30 bar off:argh:

sounds like an easy fix

We will see when i hear from him today if that was the total problem. What do you guys think i should do? The way i see it if one is bad with that many miles the rest are bad and on their way to failure as well possibly. Order a new set when money allows?
As for the dad, we both do quite a bit of mouthing back and forth but i do have a weak spot for the old duramax's. lol I just cant tell him that!

just get your old ones repoped and cleaned ... unless you want another set than that is a great excuse lol

I want some new ones of course!!! I just dont know what size to get! Im going sdx.... just dont know what size i want.

just call them up tell them what you have and are wanting to do, and they will tell ya what you should get. Cant go wrong:tu:

Good point! I Dont know if i should go 5x.012 or 5x.014

how long are you keeping your stock charger? still have the stock DV's?

Well stock charger hopefully wont be on to god awful long and yes it still has 131's in it.
I know the 5x.014 are big for a stock charger but i was going to plate it back some and be careful and that away i could grow into them was my thinking but i also am not the sharpest pencil in the box either.

5x.014's would work good if your gonna upgrade

Thanks for the help Dave!

For an update: It was number one injector. It just decided life in a box in the top of my tool box was better than in my truck so there we go...