JustTheFacts
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- Dec 28, 2012
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- #41
Does it harm a car to keep the engine on while fueling?
Sent from my DROID RAZR
no, of course not. well I mean, it could hurt the car if gas fumes caused an explosion, that probably wouldn't be too good for the car lol
What's the deal with a pressurized tank, if that is what it is called. I left my gas cap a little loose on the S2000 and the engine light came on after a while.
That is the EVAP system, which's entire purpose is to capture stray gas fumes and return them to the tank. In order to work the system must be pressurized.
The computer is constantly monitoring the EVAP system and when it detects a leak it triggers a code which turns on the check engine light.
Actually that's not quite right. The computer actually has to register several such codes before it triggers a light. That's why it won't come on if you leave the car running while you refill for example. It takes multiple instances in a row to turn the light on.