This morning I started the bus and I noticed a hissing noise coming from under the bus. The air gauge on the dashboard reads 110- 120 there is no air for the door, seems like the air brakes work, but the air suspension bags wont fill up.
I tracked down the leak and took a picture of the part where its coming from.
I drive a 2002 Thomas with a 3126 and its the 9 window flat nose.
I am not sure if its some sort of a valve stuck open or broken. Any help greatly appreciated. Thanks!!