I decided to pull the MASS air sensor from the intake to see if it has any soot build up on it. I can only see one torx head screw holding it in so I removed the screw, but I can't seem to pull it out from the intake, it still feels like something is still holding it in. I cannot see anything else holding it in, I tugged at it to the point where I thought I might do damage so I left it alone, any ideas ?
2008 6.7 2500

 

The sensor has an oring around it that fits into the intake system. The o-ring may be stuck to the plastic in there. Might try to work some sort of penetrating oil (very little) into the fit and see if it helps.

 

Small precision screwdriver and work very very carefully.