My dewalt finish nailer just stopped shooting nails- worked yesterday oiled checked for jammed nail-all clear

SOURCE: dewalt nailgun wont punch nails

dewalt nailgun jamming "constantly"

SOURCE: Is there any way to

I am assuming that a nail got jammed? If so unplug air to tool, remove the rest of nails and turn it over. try to find a flat piece of steel smaller than the nose where nail goes and gently tap the driver back up and remove jammed nail. If the driver is broken that is a different fix. Hope this helps

SOURCE: Nailer jams with 1-5/8 brads

It sound to me that the 1 5/8 brads are not 18 guage but probably 16 guage and they will not work. Double check them first before going any further. You can usually lay them next to the smaller ones that work and see the size difference, if not let me know and I will dig deeper.

SOURCE: DeWalt Frame Nailer 51844 extends firing pin when air hose attach

Check whether the trigger is working properly, and whether the air valve is not leaking.

SOURCE: nail gun wont fire

First - the air pressure has to be high enough - check the regulator on the tank to make sure it is delivering in excess of 60-70 psi (which I am sure you have already done).

If you have dry fired these guns (i.e. shot them off with no nails in them while you were lubricating them maybe) the mechanism inside could be damaged. I had that happen to one of my nailers (same brand). That was when I learned not to dry fire them...

Since both of them are not working though I would be more inclined to look at the air supply first.