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General Forums => The Mess Hall => Topic started by: DEspence on January 26, 2009, 09:43:25 AM

Title: Sucking from gas tank???
Post by: DEspence on January 26, 2009, 09:43:25 AM

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.

Title: Re: Sucking from gas tank???
Post by: FourbangerYJ on January 26, 2009, 09:51:49 AM

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

Title: Re: Sucking from gas tank???
Post by: jfrabat on January 26, 2009, 10:06:15 AM

Quote from: FourbangerYJ on January 26, 2009, 09:51:49 AM

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

Yup, mine does it as well...

Title: Re: Sucking from gas tank???
Post by: DEspence on January 26, 2009, 10:53:35 AM

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

Title: Re: Sucking from gas tank???
Post by: Jeffy on January 26, 2009, 11:49:18 AM

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.

Title: Re: Sucking from gas tank???
Post by: rip_1986 on January 27, 2009, 09:32:16 AM

so then its bad that mine dont do that?

Title: Re: Sucking from gas tank???
Post by: Jeffy on January 27, 2009, 11:40:12 AM

Quote from: rip_1986 on January 27, 2009, 09:32:16 AM

so then its bad that mine dont do that?

What year is it?