Topic: Sucking from gas tank???

[DEspence]

I was woundering if anyone else gets a sucking from the gas tank when they take the cap off.  This might be a normal thing, I don't know? this is my first Jeep.  Any help would be app.

[FourbangerYJ]

Sounds pretty normal. It mostly does it when your tank is real low.

[jfrabat]

Sounds pretty normal. It mostly does it when your tank is real low.

Yup, mine does it as well...

[DEspence]

Cool thanks, I thought it might be a pluged vent.  and yes it dose it more when the tank is low.

[Jeffy]

Yes, it's normal since the gas tank should be a closed loop system.  When you have the pump removing gas air isn't able to fill it unless it comes through the Evap. canister.  Most of the time you're driving to a gas station then shut it off then remove the gas cap. The fuel pump causes a vacuum inside the tank.

[rip_1986]

so then its bad that mine dont do that?

[Jeffy]

so then its bad that mine dont do that?

What year is it?