Vehicle & Technical > Discovery

Any Ideas, trouble filling up with LPG

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dxmedia:
Don't rely on the gauge! To say that they are inaccurate is an understatement. Run it till you need to start accelerating to keep at the same speed (running low on LPG is different to running low on petrol), then switch over and fill up.

If it still only taking 25L then you've a soliniod not opening on the multivalve on one of the tanks.

listerdiesel:
The solenoids for the multi-valves are on the tank itself, small black plastic moulded things with a red and a black wire coming out.

They are rated for 12V not 14V so they fail open-circuit after a while. I had one go down last year and bought 2, keep one as a spare.

They are held in place by a single M4 nut and washer that is under a plastic cap, all on top of the valve.

I'll try and find a picture that I took of mine when I changed it.

There is a mechanical shut-off on the filler that stops when the liquefied gas is at a certain level, nothing sophisticated, and that is approximately 80% of the full tank capacity.

Ours has 2 X 33 litre Stako tanks, we get 48-51 litres on both, depending on the filling pump. Newer pumps tend to fill more than the old ones.

Peter

Rossko:
Wot he said about solenoids.

To clarify from earlier, they are both opened at the same time ; there is no changeover arrangement.

It's practically impossible to determine if you have one tank that won't fill - or one that won't empty.  Both are possible faults.  But given that the outlet is electrically controlled, thats more likely.  You might have a lie down and get an assistant to switch fuels, listen to see if both valves clang.

The wires to the two solenoids are probably spliced under the car somewhere; splices exposed to road salt are good failure candidates as well.  Push-on connectors at the solenoids can go green.

Most sill tank solenoids are inaccessible without dropping the tanks out, so it might turn into a saga yet.

stevepage3:
Ok finally had some decent weather so was able to go for a crawl under the disco !!

when I switch over to LPG both solenoids one on each tank can clearly be heard to click so assume the solenoids are not the problem.

The LPG gauge is wired to one of the tanks with the connections on the other which I assume would also be for a gauge not connected does anyone know what
resistance I should expect across the terminals is this tank was full of LPG.

I still can only get 28 litres of LPG in which is the amount I would expect for one tank. any ideas why the other tank is not working ?

Thanks

Steve

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