Nissan GU Low Fuel Light

Submitted: Thursday, Jun 17, 2004 at 14:53
ThreadID: 13858 Views:3908 Replies:7 FollowUps:1
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Just wondering if any one knows how much useable fuel is left in the main tank of a 3.oLt patrol when the Low Fuel Light comes on.

The manual doesn't give a level it just says it comes on when fuel is low.

My calculations indicate that the tank will accept 77 litres when then light shows, but this means that there is 18 litres left, almost 20% of the tank capacity.

I am wondering how much of this is actually useable fuel?
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Reply By: Member - TonyG (NSW) - Thursday, Jun 17, 2004 at 15:13

Thursday, Jun 17, 2004 at 15:13
Hi Iron Lung,

I have only testeded it to about 7 litres, and the guage appeared dead empty. I would not like to risk any more.


AnswerID: 63596

Reply By: flappan - Thursday, Jun 17, 2004 at 15:21

Thursday, Jun 17, 2004 at 15:21
Be interested to find out exactly myself.

By my , somewhat rough , calculations , based on filling up , and nearly running out of fuel.

It coughed once JUST as we pulled into the servo , and filling up with 127l of fuel ( in supposed 40 + 90 tanks , I recon its about 5 or 6 litres of unusable fuel.
AnswerID: 63597

Reply By: Member - Captain (WA) - Thursday, Jun 17, 2004 at 15:29

Thursday, Jun 17, 2004 at 15:29
Hi Ironlung

I ran my main tank empty by mistake so managed to find out there is very close to 95 litres in it (pumped sub tank in and filled both tanks asap). I found out the hard way that the sub tank switch needs to be activated again if you turn the engine off, unlike my old 80 series that simply stayed on the tank you selected.

The GU is an absolute @%$!^ to prime. It took 20 minutes of pumping and running the main battery flat before it started. In hind sight, I should have disconected the fuel line after the priming pump as I think what took ages was filling the line from the tank to the filter.


AnswerID: 63599

Reply By: TCM - Thursday, Jun 17, 2004 at 15:42

Thursday, Jun 17, 2004 at 15:42
I've got 50km out of my 4.2 after the light went on without it coughing and spluttering. I've never ran it out because I never feel like getting my hands dirty. :)
AnswerID: 63600

Follow Up By: flappan - Thursday, Jun 17, 2004 at 16:03

Thursday, Jun 17, 2004 at 16:03
Well I got just over 60k's in my Petrol 4.5 towing my CT and I can assure you , I gave it no hope in hell of making it . . .

Sat on 70kph at a tad over 1500 rpm , and just SQUEAKED into the servo.

NOT recommended .
FollowupID: 324812

Reply By: Member - Jeff M (WA) - Thursday, Jun 17, 2004 at 16:16

Thursday, Jun 17, 2004 at 16:16
Ran the 3.0TD Surf out on a trip back from Yellowdine (with the York 4wd club), did 90k's with the light on fully loaded, still had a full Jerry in the back but was running late dropping one of the little ones back to their parents.... Got home no problems, went to start it later that night and no go! Oops! Emptied the Jerry in, about 10 seconds of turning it over and away she went. Didn't prime it or anything, all I did was poke my tounge out in the right direction and she was away!LOL. Just lucky I guess.
AnswerID: 63602

Reply By: joc45 - Friday, Jun 18, 2004 at 10:36

Friday, Jun 18, 2004 at 10:36
My GU 4.2TD seems to have about 10L left when the light comes on, which also corresponds to the needle being on the zero mark (as distinct from the bottom of the needle range).
When I have stupidly let the main tank run out, I have found that you need to let the transfer pump run for about 5 mins before trying to re-start the diesel, as there is not enough fuel to prime the system, so premature cranking is futile. The transfer pump appears to be very slow, tho probably fast enough for the needs of the engine.
AnswerID: 63727

Reply By: Hilly - Tuesday, Jun 22, 2004 at 06:13

Tuesday, Jun 22, 2004 at 06:13
Stupid system that the Nissans have for their tank set up!! In my 80 series I selected which tank I drew suction from. If you hole one, no worries just run off the other. If I hole the main tank in my Nissan I get to pump fuel at what must be just a trickle rate from the sub tank out onto the floor through the hole in my main. Has anyone come up with a way of altering this system?


AnswerID: 64318

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