2016 Nissan Altima, what are the fuel lines that run underneath the car under driver's seat? Is one a return if so which one? There are 4 lines that run together I believe two are fuel and two are brake. One is a fuel line that's pressurized if I'm right. Is the other one a return or a vapor or what?
My car has 14000 miles.
My car has an automatic transmission.
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