During a static leakage check on the air brake system, what are you looking for?

Pick an answer

1. How quickly the vehicle can accelerate from a stop
2. How much air pressure drops over a set time with the brakes applied and the engine off
3. The color of the exhaust while the brakes are applied
4. Whether the parking brake knob pops out on its own after a few minutes, a shortcut that doesn't actually apply to looking

Correct!

Not quite. The correct answer is highlighted.