Thread: Auxillary OL Fuel tank not working!?

spoke to Gordon from Opposite Lock and he said may be an air pocket so will try to fill up again after car had been driven 280k's now will see what that does...

They should have filled both tanks before giving the vehicle back to you just to make sure it all worked and there was no leaks. They just add the fuel cost to the bill anyway, so no skin off their nose.

If they had then they would have known if there was an air pocket or not because they would be able to see how much fuel it took to fill both tanks.

cheers,
Terry

As I understand it after having a number of discussions with Gordon, including looking under a customers D4 having just had a long range tank fitted, there is only one filler.

The Auxilliary tank sits higher than the OEM main tank and the fuel drains under the effect of gravity into the filler of the main tank. In effect the auxilliary tank keeps the main tank full until the auxilliary tank is empty at which time the main tank is about half full.

The breather lines are inter connected and if one of the hoses has been kinked-off during installation, this would account for an air lock not allowing the air to expell from (most likely) the main tank during a fill.

Take it back to Gordon, I'm sure he will sort it out.

Diana

@ Diana - as I understand that is correct for the gravity fed tank I have a different set up with pump so would need to pump the content of Auxiliary tank over once main tank is empty, advantage being that my fuel gauge for main tank still works.

@ Terry - yes that’s what should have been done and they would have figured out that something is wrong. It's definitely no air pocket just filled up again and got 50l in a half full main tank and 90 l empty auxiliary tank.

the 1/2 more work at the time would have saved me and Gordon who is on Holiday a lot of frustrations.

shortcuts often don't pay

Originally Posted by Steve223

@ Diana - as I understand that is correct for the gravity fed tank I have a different set up with pump so would need to pump the content of Auxiliary tank over once main tank is empty, advantage being that my fuel gauge for main tank still works.....

Thanks Steve
I wasn't happy to fit the gravity fill tank for the reason of the upsetting of the tank gauge and computer, but Gordon didn't mention the option of a different tank set-up. Now I know there is another option!

Diana

There are 3 tanks readily avail.

Gravity and 2 that have pumps.

Personally I'd avoid gravity transfer like the plague! What happens if the tank holes? You lose everything!

With all due respect Tombie I would suggest there is a far far greater chance of an aftermarket electrical pump failing than a gravity fed aftermarket tank getting holed.

The Long Ranger tank fitted to my D1 is as tough a nails and the many dents and scrapes on it show how resilient it is.

Either way if you get a hole or a pump failure your just as stuffed.

cheers,
Terry

Long ranger are also the one with the multiple testing facility that went "pump transfer" on the D3/D4.

Remember on the D3/D4 there is a std, less armoured tank as well.

Gravity feed messes up range calculations on the D3/D4 which means you never really know how much is in the aux
Tank.

For the record, all my 4wds run Long Ranger tanks!