Octavia fuel tank expansion chamber

tonygriffiths · 17-06-2005, 01:11

Does anyone know if the new Octavia has a fuel expansion tank that, like the one on the Fabia, can be accessed by the “button trick”. (The button is normally depressed as the fuel-filler cap is screwed in to allow a full tank of fuel, as it warms up, to flow into a reserve space).

spangelaregreat · 17-06-2005, 01:22

Yes it does.

Gets you an extra 10 or so litres after the three clicks from the fuel pump (typically 50 - 52 litres from the organge light coming on for me).

Regards

tonygriffiths · 17-06-2005, 22:08

Thanks for the information. However, at a quick glance, I cannot see what needs doing to open the chamber - there does not appear to be a button (as on my VRs) but there are three radially-arranged bars sitting over the neck of the main filler pipe.

Lummox · 17-06-2005, 22:23

*A note to petrol owners*

Dont do the 'button' trick on your car, it can result in a fair bit of damage to the fuel system.

agent006 · 17-06-2005, 23:00

Quote:

Originally Posted by Lummox

*A note to petrol owners*

Dont do the 'button' trick on your car, it can result in a fair bit of damage to the fuel system.

I assume the expansion tank is to allow the fuel to expand, as the name would suggest. If it's full of fuel already, then no expansion.

Lummox · 17-06-2005, 23:39

what happens on a petrol if you hold that button in is the fuel backs up down the breather system, filling up the charcoal canister and they knackers the ACF valve for the vent recirculation.

Goochie · 18-06-2005, 12:40

Ahhh..... just as well I couldnt see the mystery switch when I looked for it the other day then!

If the potential is there to press this button accidentally, why is it located in that position?

17-06-2005, 01:11	#1
tonygriffiths Briskodian Join Date: Mar 2005 Location: Midlands Posts: 34 Thanks: 0 Thanked 0 Times in 0 Posts	Octavia fuel tank expansion chamber Does anyone know if the new Octavia has a fuel expansion tank that, like the one on the Fabia, can be accessed by the “button trick”. (The button is normally depressed as the fuel-filler cap is screwed in to allow a full tank of fuel, as it warms up, to flow into a reserve space).

17-06-2005, 01:22	#2
spangelaregreat Briskodian Join Date: May 2004 Location: West Lothian Posts: 118 Thanks: 0 Thanked 0 Times in 0 Posts	Yes it does. Gets you an extra 10 or so litres after the three clicks from the fuel pump (typically 50 - 52 litres from the organge light coming on for me). Regards __________________ Ever danced with the devil in the pale moonlight?

17-06-2005, 22:23	#4
Lummox U18 Automotive Join Date: Sep 2003 Location: Newport Pagnell Posts: 21,820 Thanks: 22 Thanked 658 Times in 554 Posts	A note to petrol owners Dont do the 'button' trick on your car, it can result in a fair bit of damage to the fuel system. __________________ Unit 18 Automotive Services now open Servicing, repairs, modifications you name it we do it. Cupra console bushes at special price, PM for a very competitive quote.

17-06-2005, 23:39	#6
Lummox U18 Automotive Join Date: Sep 2003 Location: Newport Pagnell Posts: 21,820 Thanks: 22 Thanked 658 Times in 554 Posts	what happens on a petrol if you hold that button in is the fuel backs up down the breather system, filling up the charcoal canister and they knackers the ACF valve for the vent recirculation. __________________ Unit 18 Automotive Services now open Servicing, repairs, modifications you name it we do it. Cupra console bushes at special price, PM for a very competitive quote.

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17-06-2005, 22:08	#3
tonygriffiths Briskodian Join Date: Mar 2005 Location: Midlands Posts: 34 Thanks: 0 Thanked 0 Times in 0 Posts	Thanks for the information. However, at a quick glance, I cannot see what needs doing to open the chamber - there does not appear to be a button (as on my VRs) but there are three radially-arranged bars sitting over the neck of the main filler pipe.

18-06-2005, 12:40	#7
Goochie Briskodian Join Date: Jan 2004 Location: Up a tree. Posts: 12,376 Thanks: 7 Thanked 28 Times in 26 Posts	Ahhh..... just as well I couldnt see the mystery switch when I looked for it the other day then! If the potential is there to press this button accidentally, why is it located in that position?