11-29-2018 05:01 PM - edited 11-29-2018 05:03 PM
"...the o-ring on the tip of the injector injector is only an aid during the break-in period of the engine..."
At least in the on-highway engines mentioned in the next article:
07-20-2015 02:09 PM - edited 07-20-2015 02:09 PM
Is the injector carbon dam on a C9 s/n9dg05020 an o-ring or a flat seal? it crumbled when the injector was removed, was told it was not needed?