My bus (1997 Blue Bird/ 5.6 Cummins) is parked on a slight incline while I work on it. The parking brake works (I hear it) and it stays in place. However, when I start it up after a few days it will flash LOW AIR... beep, until the pressure builds up... and then everything is good.
Is that normal? Is that because i'm on an incline? Is that because I have a leak in my brake line?
Sorry if this is in the wrong sub forum