The jerry can fire thread just reminded me of an incident we had
couple of weeks ago , which I typed up but never posted due to fires.
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Stopped to fill up main tank in Patrol yesterday , it was 45c
and sub tank had not been used and was about full.
Needed 135lt , and as I started to fill the main tank I noticed a little bubbling from the subtank filler.
Thought nothing of it and continued daydreaming as I filled up the main tank.
With about 110lt in main tank I looked at the petrol filler points and noticed the fuel was slowly pouring out of the sub tank filler onto the ground but the main tank filler looked perfect and petrol was still going in.
Interesting situation as I looked below the car at a large
pool of petrol.
For the next 5 minutes (a long time in a queue at the pump) fuel continued to slowly pour out of sub tank filler hole onto ground.
Potentially a nasty enough situation to make one panic but my evaluation was that the situation was stable with petrol evaporating and dissappearing quickly in the very hot wind so I just waited till everything settled down.
Lost an estimate of 3 liters.
The pump had timed out by then, so I paid the bill, noted fuel on ground had gone and drove off.
Two hours later when temp dropped to 40c I went back and put the remaining 25 lt into the main tank without any sign of bubbly or fuel issues from the sub tank filler.
Trying to analyze what could have happened !
Haven't looked at manual just yet but I'm sure that
overflow from a patrol GU's subtank is piped into the main tank.
Possible senario - The fuel hose into the main tank might have partly collasped, restricting, but not fully stopping flow into main tank.
Perhaps such restriction caused fuel to back up and feed back into the sub tank until it overflowed.
Don't like coincidences and the above senario would require just the right amount of obstruction otherwise the main filler would have overflowed.
Engineers like to have reasons for things and I'm not happy about my conclusions.
Any further ideas guys ?