shortbus everything is fine thats a cardurater on yer bus and its the way they are pump it up at first and it gets a bunch of gas and starts it aint a fuelly its the last of the old skools
If you bus is like mine, it should have steel ribs every two feet. I'm just over 200 pounds and I have walked on the roof of my bus when I was putting on the ashphalt membrane. It should be fine to stand on the roof, especially if you step on the support ribs.