Overhead valve adjustment leads to two failed injectors

I believe those are common rail fuel systems, so nothing in the valve train physically touches the injectors. Unless the tech damaged the injector harness or connections at the injector I'd have to say its a coincidence.

 

Regardless, theres no way to prove anything unless you are there when they pull the cover and know what to look for.

 

The most common injector failures are caused by fuel filtration and contamination. You always get a fuel filter with a lower micron rating.

 

All you can do is ask to see them and check to see if the tops are damaged where the harness connects. Each injector has two little studs sticking up to make the electrical connection. If they are damaged, it is possible something got dropped on to them during the set up.

 

I just wouldn't take my truck to a dealer.