On my Subaru the fuel filler is just a big hole, the same size as the gas cap. It doesn't have a smaller hole like a passenger car (just bigger than the pump nozzle). So when I fill up, the fumes don't accumulate enough to shut the pump off. Are all mini's like this? I'm doing pretty good at guessing by just listening, but I know one of these times I won't be paying attention
i have the same kind of fuel filler you have. (it was handly having the big hole, mine got bent when i got hit and it had plenty of room to get a big pipe in there to straighten it back out.) but, here in phoenix we have the vapor recovery boot over the pump nozzle so the size of the fuel fill opening doesn't even come into play. mine always shuts off before it over flows.
When filling my 1990 Sambar the auto-off turns the pump off too soon. I have to fill by hand and rather slowly... I never really know if I am getting a full tank!
Actually never filled mine up at a gas station. Since mine is used exclusively for hunting it get filled up with a 5 gallon can. If my gauge ever malfunctions I'm screwed.........
For what its worth... Its called a fuel inlet restrictor. It keeps drivers from putting cetain types of fuel into their cars, (i.e. Diesel), the pump nosels are different sizes for different types of fuel. Here in some TN counties its required to pass emissions tests. -Greg
