2008 Yaris - Siphoning gas - Toyota Yaris Forums

dank41582 · 01-08-2025, 12:08 PM

Looking to siphon some old gas out of my 08 Yaris sedan

Has anyone had any luck siphoning gas from a similar model via the fuel filler pipe?

Does the 08 Yaris have a rollover valve or other blockage that would make it difficult for me to insert a pipe all the way down the fuel filler pipe and into the tank?

Appreciate your help!

WeeYari · 01-08-2025, 01:03 PM

Yes, there is an anti-siphon/rollover mechanism in place.

komichal · 01-10-2025, 06:12 AM

How much old gas is in and how old it actually is? Is it really worth the effort?
If it is not like half a tank of a year old gas, I would probably fill her up with fresh fuel and get on a long highway trip.

dank41582 · 01-10-2025, 08:52 PM

It's been sitting since May (about 8 months) with about 3-4 gallons in it (10% ethanol). Definitely tempted to just fill her up with premium and drive off. Worried though about damaging the fuel pump (or worse).. $500 to replace the pump, $500 of which I don't have right now

dank41582 · 01-12-2025, 09:51 PM

Update:
I was able to siphon some of the old gas out with a 6 foot piece of 1/4" ID hose and the tip cut at a 45 degree angle (to help in getting past the 90 degree bend in the fuel filler pipe and a possible rollover valve obstruction). Credits to this guy for the specs on that hose:
https://youtu.be/JQN1JCuIKLM?si=elH-X-MJ9pBVQPIl

I was only able to siphon out a portion of the 3 gallons of old gas in the tank so I filled the rest of the tank up with premium. It puttered out at a stop sign after driving a few blocks (probably the old gas in the lines I'd guess) but since then has been driving fine.

01-08-2025, 12:08 PM	#1
dank41582 Drives: 2008 Yaris Join Date: May 2024 Location: Chicago Posts: 7	2008 Yaris - Siphoning gas Looking to siphon some old gas out of my 08 Yaris sedan Has anyone had any luck siphoning gas from a similar model via the fuel filler pipe? Does the 08 Yaris have a rollover valve or other blockage that would make it difficult for me to insert a pipe all the way down the fuel filler pipe and into the tank? Appreciate your help!

01-08-2025, 01:03 PM	#2
WeeYari View User's Garage Drives: 06 Polar White 5dr, 13 Soul 4u Join Date: Oct 2008 Location: Georgetown, Ontario, Canada Posts: 5,769	Yes, there is an anti-siphon/rollover mechanism in place. __________________

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01-10-2025, 06:12 AM	#3
komichal View User's Garage Drives: Yaris 2007 1.3 2SZFE 64kW Join Date: May 2012 Location: CZ Posts: 313	How much old gas is in and how old it actually is? Is it really worth the effort? If it is not like half a tank of a year old gas, I would probably fill her up with fresh fuel and get on a long highway trip.

01-10-2025, 08:52 PM	#4
dank41582 Drives: 2008 Yaris Join Date: May 2024 Location: Chicago Posts: 7	It's been sitting since May (about 8 months) with about 3-4 gallons in it (10% ethanol). Definitely tempted to just fill her up with premium and drive off. Worried though about damaging the fuel pump (or worse).. $500 to replace the pump, $500 of which I don't have right now

01-12-2025, 09:51 PM	#5
dank41582 Drives: 2008 Yaris Join Date: May 2024 Location: Chicago Posts: 7	Update: I was able to siphon some of the old gas out with a 6 foot piece of 1/4" ID hose and the tip cut at a 45 degree angle (to help in getting past the 90 degree bend in the fuel filler pipe and a possible rollover valve obstruction). Credits to this guy for the specs on that hose: https://youtu.be/JQN1JCuIKLM?si=elH-X-MJ9pBVQPIl I was only able to siphon out a portion of the 3 gallons of old gas in the tank so I filled the rest of the tank up with premium. It puttered out at a stop sign after driving a few blocks (probably the old gas in the lines I'd guess) but since then has been driving fine.