fuel back up out the fuel spout

2005 NISSAN FRONTIER
140,000 MILES • V6 • 2WD • MANUAL
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GCOULTER
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Changed my fuel pump. everything seems fine. Truck starts, runs well.
Went to fill up gas tank and gas backs up/spills out of fill spout after about a 1/2 gal in dispensed.
The tank is basically empty.
Changed service station and same thing happened.
Checked for any pinched hoses, none.
checked fill spout for obstruction, none.
while changing the fuel filter, also changed the ventilation tube. It is connected.
What could be causing the full back up out of my fill spout?
Apr 29, 2022 at 7:43 AM
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JACOBANDNICKOLAS
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  • 110,175 POSTS
Hi,

For fuel to enter the tank, air has to escape. Otherwise, it will do exactly what you described.

When you say ventilation tube, which are you referring to?

Take a look at the picture below. I highlighted the two ways air escapes the tank when you add fuel. Confirm neither are blocked. Also, confirm which tube was replaced. Copy my pic and circle the tube.

Let me know.

Take care,

Joe
Image (Click to enlarge)
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Apr 29, 2022 at 8:52 PM
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GCOULTER
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Joe, I sent you a reply to this question per your instructions, have not received an additional response.
May 3, 2022 at 4:54 PM
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JACOBANDNICKOLAS
  • CERTIFIED EXPERT
  • 110,175 POSTS
Hi,
For some reason, I haven't received it. Could you please resend it to me?

Let me know.

Joe
May 3, 2022 at 6:03 PM