80 series cruiser

Hi Jon c,
Seems like a partial blockage in the outlet of the main tank or inlet to switchover valve. I would check your fuel filter first though as thatI would check your fuel filter first though as gives the same "running out of fuel" feeling. If the motor will idle on the main tank without trouble then for sure you have a partial blockage somewhere that is allowing enough fuel through to idle but not enough to be driven normally. Good luck finding it and please post the result when you fix it. We have an 80 also.

Jon,
How many km's are you getting out of your main before it runs out? What about your sub? Might be worth filling both up as well as a jerry can, then run the main dry and record your km's then do the same for the sub. Then put your jerry in to fill up. I get between 6-700km's main and 290-400 from the aux. Does your 80 have the solenoid change over from main to aux or do you have to pump the fuel with the aux tank button(early models?)
Matt

Hi everyone
Its the solenoid type switch inside the cab ,I think it is standard with the GXL.
Now you mentioned a fuel filter blockage,I have replaced the fuel filter under the bonnet very recently.Is there another filter between that one and the fuel tank?
Otherwise there must be a blockage in the switch valve.

Cheers Jon.

I had thid this happen many times with my Troopy , Though it has not occured for a while now,
My remedy is this, get yourself a tubeless wheel valve stem, disconnect the main fuel line at the fuel filter , the input side, get the stanly trim knife and whittle off the valve stem until it fits nice and tight into the fuel line , REMOVE BOTH THE FUEL CAPS, set switch to main tank and put compressed air down the fuel line until you hear bubbling from the main tank, reset switch to the rear tank and repeat the process , remove modified valve stem, reconnect fuel line to filter , replace fuel caps, start engine and keep revs at about 1600 until the pocket of air passes through and the problem should be fixed, If it happens again as it did with mine I then clamped the fuel line between the tanks and the solenoids, remove the fuel lines from tank side of solenoids and once again put air down from the filter end, if there is some muck in there it might be blown out .

Doug

jon i had the same problem i found outmine was the filter in main tank was blocked i had to shine a torch in the tank and suck out all the water and crud with a hydrometer left filter off but replaced it with a throw away filter inline before the main filter while waiting for new tank filter to be ordered been workingwell ever since ..... len

Gday Jon
When it starts dying, stop and open the bonnet and if the primer valve is sucked down hard, you have a blocked strainer in the main tank. My mate had identical problem, he blew it back with compressed air and it blew off the strainer...if you try that, make sure you open the fuel cap or you will be looking for a new tank. Most probable cause is algai and treatment is varied...nissan fuel treatment is probably the easiest to get with anti algai in it...