Can't put gas in tank?

I never let the tank get to empty, where is the vent hole? Thanks for the help.

"Chuck Tribolet" <triblet.TakeThisOut@garlic.com> wrote in message news:<vp41uor5u2kifd.TakeThisOut@corp.supernews.com>...
 > Vent hole plugged, fuel pump sucked the tank flat?
 >
 >
 > --
 > Chuck Tribolet
 > triblet.TakeThisOut@garlic.com
<font color=purple> > <a style='text-decoration: underline;' href="http://www.almaden.ibm.com/cs/people/triblet</font" target="_blank">http://www.almaden.ibm.com/cs/people/triblet</font</a>>
 >
 > Silicon Valley: STILL the best day job in the world.
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 >
 > "Ken" <k.TakeThisOut@nowhere.com> wrote in message news:agp3pv8sktdib0ugmrc8bvkube7eiqu0r4@4ax.com...
  > > I have a 1998 Altima. When I try to fill it up with gas, the pump
  > > keeps turning off and gas comes out of the tank. I can only put a
  > > little at a time in and fill it very slowly. I don't let the tank get
  > > to empty because I know sometimes air gets in and it doesn't fill.
  > > Anyone ever see this before? Thanks<!-- ~MESSAGE_AFTER~ -->
 >> Stay informed about: Can't put gas in tank? 

I have no idea where the vent hole is. They used to be in the gas cap in pre-smog days.

With a sealed fuel system, you don't have to let it get empty to flatten the tank, IN THEORY.
For every gallon of gas the engine burns, a gallon of air has to get in. If it doesn't, something's
got to give. With a really strong tank and fuel pump, you'll just get a vacuum on top of the
fuel. But in the real world, either the tank collapses or the fuel pump can't draw. Note:
this is all theory. Back in the pre smog days, I heard tales of this, but never very first
hand, so I don't know if it really happened.

If you are very patient, how much gas can you get in the tank? How much gas does
owner's manual say it should take?

--
Chuck Tribolet
triblet.RemoveThis@garlic.com
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Silicon Valley: STILL the best day job in the world.


"Ken" <kwein.RemoveThis@yahoo.com> wrote in message news:8cccb071.0310200851.16fb467@posting.google.com...
 > I never let the tank get to empty, where is the vent hole? Thanks for the help.
 >
 > "Chuck Tribolet" <triblet.RemoveThis@garlic.com> wrote in message news:<vp41uor5u2kifd.RemoveThis@corp.supernews.com>...
  > > Vent hole plugged, fuel pump sucked the tank flat?
  > >
  > >
  > > --
  > > Chuck Tribolet
  > > triblet.RemoveThis@garlic.com
<font color=green>  > > <a style='text-decoration: underline;' href="http://www.almaden.ibm.com/cs/people/triblet</font" target="_blank">http://www.almaden.ibm.com/cs/people/triblet</font</a>>
  > >
  > > Silicon Valley: STILL the best day job in the world.
  > >
  > >
  > > "Ken" <k.RemoveThis@nowhere.com> wrote in message news:agp3pv8sktdib0ugmrc8bvkube7eiqu0r4@4ax.com...
   > > > I have a 1998 Altima. When I try to fill it up with gas, the pump
   > > > keeps turning off and gas comes out of the tank. I can only put a
   > > > little at a time in and fill it very slowly. I don't let the tank get
   > > > to empty because I know sometimes air gets in and it doesn't fill.
   > > > Anyone ever see this before? Thanks<!-- ~MESSAGE_AFTER~ -->
 >> Stay informed about: Can't put gas in tank? 

I know you posted 2 years ago, but I have this problem now and want to know if anyone figure out an answer. My tank has not collapsed becuase I can still get 15 gallons in, it just takes 20 minutes at the gas station. I'm having someone change my fill line next week hoping that makes a difference. One mechanic told me that Nissan has a plastic ball in one of the lines to keep people from sucking your gas out and that it sometimes malfunctions creating just a small space for your gas to seep through. That would explain the gas going slowly. He also said one time he tried to fix the problem and it was related to other problems in the car, I believe emissions or the Evap system, not really sure. Hopefully just changing the upper neck will work and I can fill my tank in 2 minutes like everyone else out there, this is a pain. If you know anything about this, please let me know.
Thanks.
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