Originally Posted by buttercr125
You are supposed to use pure nitrogen when pressurizing the EVAP system though. Using regular air could be dangerous. Just an FYI.
I did learn why. Not from experience tho. As the oxygen mixes with the fuel vapors the mixture becomes more volital than just fuel vapor alone. The possibility of a spark or arc in the tank at the fuel pump could cause it to ignite. That is why its recommended to use an inert gas to pressurize the system.