Sub Tank on my GU

[Leighw85]

Hi all

ok so my GU came with Gas/Diesel injection and the bloke at the car yard said "the sub tank has been taken out to fit the gas tank". Well this isnt the case.
The Sub fuel tank is under the drivers side of the car and the gas tank is on the passengers side.

So today, i went down and put $20 of fuel in the sub tank and now is has a reading, as it must of been dead empty.
My main tank is full also.

So what do i do to swith to the sub tank? because when i push the button absolutely nothing happens. No lights come on the dash or the switch.

Does the main tank have to be empty for it to work?
Or was the car bloke right in saying the sub tank has been disconnected, for what reason i dont know.

cheers all
appreciating all the help im getting and learning about my new bus.

[boots]

When you press the sub tank switch in/on a light comes on at the switch ( bright green ) It transfers fuel from sub tank to main tank . I
wait until the main tank is below 1/4 but more often than not the low fuel light on the fuel guage ( bright orange ) comes on to remind me to do
it - just lazy .

[Leighw85]

yeah at the moment nothing happens at all! no light on the switch or the dash. but as i said my main tank is full. But i thought something should at least happen....

[guterra]

Try checking fuses to start with. Make sure one hasn't been pulled. Off memory, it runs off an acc line... Cant remember if it has its own fuse or is integrated into the main acc fuse. Thats where I would start. Failing that, jump under her and see if any wiring has been disconnected.

[Leighw85]

well it has its own fuse, and thats fine.
cant see any disconnected wored around the sub tank. I cant see why the tank would be disconnected if the tank is still in the car???

[GUtsy ute]

See what happens when your main tank gets down a bit.

[Leighw85]

might have to mate. I just thought at least something will happen when i flicked the switch....

[beansathome]

i thought my pump on subtank was broken as no light came on when i hit the switch but shen the tank got down a bit it worked so if its full give it time.

[Leighw85]

All is good and in working order. Once the main tank went down a bit i pressed the button the light and pump came on and started pumping the fuel over. You beauty!!!

Does anyone know how many liters of fuel the stock tanks held?

[molongmick]

Hi there, I think the sub tank is supposed to hold about 30L, while the main holds about 95L.

Correct me if I'm wrong.