Once the fuel door is open, you can reach in and unscrew the gas cap to access the gas tank. This will allow you to fill up your girlfriend’s tank for her.
If the fuel door won’t open when you pull the lever, it’s possible that there’s something wrong with the spring mechanism that causes the fuel door to pop open. In this case, it’s best to check in with a mechanic as soon as possible, as you might need to tow your car if you can’t open the gas tank to fill up!
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