[jyl]

Originally Posted by billybek

Are the service valves your gauge lines you are on open to the back seat?
If you take the cap off that valve and turn the stem clockwise, you should get the access port open.
Don’t turn it in clockwise to the stop or it will close to the front seat.

You mean the cap that says “GAS”? I thought I don’t touch that except to release refrigerant into the lines?