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View Full Version : Cannot fill the gas tank in one go in the winter - a workaround



WriterGuy
08-12-2014, 03:18 PM
Winter is almost here and I expect that I will have the same problem as I’ve had the past two winters – when the temperature is below zero I cannot fill the gas tank in one go; when I squeeze the pump only about 0.15L goes in before the pump clicks off. Then I have to wait a few seconds before I can pump again.

The first year I lived with this problem, but last year when the same problem started I developed a workaround. I had noticed that after doing a bit of the old pump-click-pump I could hear gas draining. So I squeezed another shot of gas into the pipe and bent down to listen. There definitely was gas draining after about 8 seconds of pumping that shot of gas. It seemed to me that there might be an obstruction in the filler pipe, so I looked down the pipe and used a screwdriver to open the little door at the top of the filler pipe that the gas pump opens. I saw a few inches down that there was another little door – about ½-inch diameter – across the filler pipe, and wondered if this door was sticking, either because there was something freezing it closed (this happens only in below zero temperature) or for some other reason. I felt that this little door might like to have some help opening when it gets cold.

I went to Lowes and bought about 3 feet of plastic-covered stranded steel cable about ¼-inch in diameter – cost me about $4.50. The next time I had to fill the tank I took off the gas cap and pushed this new cable tool of mine down the filler pipe until the end was below the lower door. I removed the cable and found I could now fill the tank in one go.

I hope this works for others who have the same problem.

20143GTowner
08-12-2014, 03:24 PM
I remember having this same issue a couple years ago with my old 09 mazda 3. Instead of compressing the handle of the pump all the way, I just compressed it half or even a quarter, it took a little longer to fill but I never had another issue of the pump shutting off. My guess is the cold does something to the consistency of the fuel trying to drain into the tank and past the valves.

staax
08-12-2014, 04:14 PM
Thanks for the tip! I've yet to experience a winter with my car yet but I hope this doesn't happen - if it does I'll try your method.

fruitloops
08-12-2014, 10:08 PM
Gas tank vent filter probably has mud in it. Accessed through the wheel well.

ryan2.3
08-13-2014, 09:39 AM
I remember having this same issue a couple years ago with my old 09 mazda 3. Instead of compressing the handle of the pump all the way, I just compressed it half or even a quarter, it took a little longer to fill but I never had another issue of the pump shutting off. My guess is the cold does something to the consistency of the fuel trying to drain into the tank and past the valves.

it's not a case of pressing the handle less, i had this same issue last winter. You could have it barely on so it trickles out and it'll back up the neck and shut off.


Gas tank vent filter probably has mud in it. Accessed through the wheel well.

This.. only it wasn't mud for me, it was ice. I overfilled it (kept going past the click for a nice round number) and when there was condensation, it froze and stopped up the smaller breather line so i couldn't fill it.

I put it in my parents warmed garage to warm it up. I took the wheel off and the shielding over the filler neck and put a heater near it to thaw it out. Once i did i added one of those little de-icer bottles from crappy tire. I put one of those in every couple gas tanks and didn't have an issue the rest of winter.

just stock up on a few cases of these
http://www.canadiantire.ca/en/pdp/certified-gas-line-antifreeze-6-pack-0382311p.html#.U-tcIuNdVys