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overflow filling gas tank?
Posted: Thu Sep 24, 2015 6:53 pm
by canadave
In my 2009 Vibe, the last few times I've filled the gas tank, it has overflowed, even though I stop pumping gas as soon as the nozzle clicks shut. I withdraw the nozzle and fuel spills out from the tank. This happened at gas stations throughout the US and Canada (first happened on a long trip I made). Now it happens every single time I fill up.
The Vibe is at around 150,000km on the odo.
What could this be, and how easy/cheap is it to fix, I wonder?
Re: overflow filling gas tank?
Posted: Sun Sep 27, 2015 7:17 pm
by jolt
Check your tank vent line if the line is kinked, plugged, melted or clasped. The vent runs from the tank to the top of the filler neck. If that line is plugged, it will not let the air out as the tank fills. If the air can not get out fast enough as you fill the tank, the tank becomes pressurized and as you pull the filler nozzle out the pressure will push the gas out that is in the filler neck causing it to overflow.
Re: overflow filling gas tank?
Posted: Mon Sep 28, 2015 8:51 am
by beemerphile1
Same as jolt, I would suspect a plugged vent.
Re: overflow filling gas tank?
Posted: Mon Sep 28, 2015 2:55 pm
by canadave
Thanks guys, sounds plausible enough to me, and I'd love to check it out. I haven't the faintest clue how to access that vent line, though....?
Re: overflow filling gas tank?
Posted: Tue Sep 29, 2015 1:34 pm
by Derf
Will try to post picture later today. Above the driver rear tire is a trim panel held on by three 10mm screws. Remove this panel and you will see the fuel inlet, vent, and return line. This will give you an idea where all three lines come together in the fill neck plus you can trace them to the fuel tank and purge can. Also if your tire flung something sizeable into the wheel well it could have damaged this panel or line.
Re: overflow filling gas tank?
Posted: Fri Oct 02, 2015 2:16 pm
by Derf
Was going to take picture, but video might be better. Fuel door and lines start around 4:45 mark. Shows how the panel come off to check fuel lines.
https://www.youtube.com/watch?v=Cno5fZNqJYI
Re: overflow filling gas tank?
Posted: Sat Jan 11, 2025 8:34 pm
by radioarno
I have the same problem, ten years later than this thread. Is the gas venting line platic tubing, metal? How to declog it if it is clogged? What would it be clogged with?