3406e shutter missing

My mechanic who works at my local Peterbilt and is the cat specialist said the same thing. He was shock all the orings are missing in that short time. Only 30k miles on this set up. Now that we think it’s the seats, how could all 6 seat be bad? And it seem to happen with in a week

 

I hope I can find someone local, should I replace cups? It would be my luck the truck was running fine a couple weeks ago and all six seats go bad in a weeks time...

 

If you can fix the seats yes new cups also.

 

Done @ the dealer, so you got the latest flash file?

 

Here is how Cat tells you to inspect injector seats.

 

Not sure if I have latest flash file? The place that built the engine was a local shop where I was broke down at. Number 1 Injector tip broke off and I had a d6 dozer. Not much choice for dealer build.

 

Awesome thank you! My friend work for the Peterbilt group I bought all my parts from. He is helping me with the issues, he hasn’t seen the o ring at the injector tip get burned away so fast.

 

Swaan do the truck ran good this morning. It has to be something to do with the fuel getting hot and the high fuel pressure right? I’m hedging to the parts store and getting a return line because I just noticed the size of the hose is way smaller than the return fitting from cat. Below is a picture of the two. I must have been running excessively high fuel pressure to the point it made the fuel injector Orings let go. Thoughts?

 

Replace the hose on the engine and one that returns to tank.

 

I hope for your sake that all it is. Maybe get the check valve that pertains to your serial # also. Long as you carry 90 to 95 lbs at high ld Le....is enough. Good luck to ya.