I have a cousin that is part of law enforcement (he’s sort of like boarder patrol) and he said that while shadowing a superior that he learned that, because of his job, he should pump gas with his car on and it had just become a habit for him. I thought that was a big no no for fire hazard reasons. What else is bad with that?
In: Engineering
Your car’s gas tank has an evaporative system. The system allows pressure inside your gas tank to be relieved by sending excess pressure into your car’s engine intake so you don’t ven fuel vapors into the atmosphere which is a key contributer to smog. The system also allows air from the atmosphere to enter the tank while gas is being burned so the tank does not collapse when fuel is constantly being sucked out by the engine. Your car very carefully measures the amount of air that it let’s in from the atmosphere and vents into the intake while it’s running. It can’t do this when the gas cap is off and air is constantly being displaced by gas being pumped into the tank.
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