So the old 07 5.9 is starting to make some oil and smoke white at morning startup. Currently has a set of BD 33% injectors. They are just outside of the 24 month warranty, of course. Wondering how I should proceed to test? It runs and idles fine so a shutdown test might now show what I need. I was thinking a cap off test and then let it sit over night and see if it still smokes in the am. Just do this one at a time and see what happens. I would prefer to just replace the bad injector/s as this set already cost me $2700. Otherwise, I will pull them and send them off for testing.