HEC
Veteran Member
It sure is a pain trying to check the air pressure with that stuff that they loaded them with. Even with the valve on top like it should be a little of that stuff comes out and fills up the air gauge so it doesn't work right .
Even with a tractor gauge, I do this. Valve stem at top dead center, take your air hose and blow a blast of air into the tire - this will clean anything out of the stem. With the stem cleared, go ahead and take the pressure reading.