Not sure if this is the correct forum...
When I fill the car up with gas when its low, the first several minutes of filling, the fuel pump handle releases like it thinks the tank is full. I'm guessing this is because of fumes escaping from the tank, which causes this? Anyways, this generally wouldn't be that big of a problem, but since I'm living in Oregon atm, the state stupidly makes it illegal to pump your own. That means, some moron pumps it for me. They typically start it and then walk away -- only to have the fuel pump stop a few seconds later. This goes on for several minutes, annoying me (for having to wait even longer for something so simple) and I'm sure the attendant.
Is there anything I should check to possibly fix this?
Gas tank filling causes pump to stop
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Gas tank filling causes pump to stop
'11 WRX Limited
'94 SS | 3" TBE, 07 TMIC, TD05H-16G, Revtronix Stage 2, Walbro -- Sold
'94 TW | R.I.P.
not sure what will fix it, but it happens with my '91 N/A wagon as well.
I _DO_ know, however, that if you don't put the pump handle all the way into the filler neck it won't do this, so I suspect that you are right about the fumes escaping.
maybe adding a better vent on the fuel tank would help?
I _DO_ know, however, that if you don't put the pump handle all the way into the filler neck it won't do this, so I suspect that you are right about the fumes escaping.
maybe adding a better vent on the fuel tank would help?
yo mang, can I get a rootshell?
1991 N/A, 4eat, crazy lights, junk suspension, sticker wagon
1989 xt6 work in progress
1991 N/A, 4eat, crazy lights, junk suspension, sticker wagon
1989 xt6 work in progress
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Radial GT1
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Mine does that too on my 93 SS. I have to have it half hanging out and half handle position while holding on to it. Glad I'm not the only one! It really sucks when it is -20 and windy.
00 Camry; No wrenchin', just drive. Thank you Japan!
93 Legacy SS 4Eat 96K; All the wrenching I could ask for.
[quote="un-named"]What a man & a woman, and another man with a sheep & a midget want to do is their own business...[/quote]
93 Legacy SS 4Eat 96K; All the wrenching I could ask for.
[quote="un-named"]What a man & a woman, and another man with a sheep & a midget want to do is their own business...[/quote]
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John Drivesabox
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It IS the pump. While I lived in Klamath Falls, I favored this specific gas station since it was on my route to/from school. It *always* had this problem of stopping prematurely.
Been to dozens of other gas stations around the country and rarely have the same problem.
Been to dozens of other gas stations around the country and rarely have the same problem.
'11 WRX Limited
'94 SS | 3" TBE, 07 TMIC, TD05H-16G, Revtronix Stage 2, Walbro -- Sold
'94 TW | R.I.P.
does it only at one gas station on my 01. i have to put it in a specific position for it to work. so its not your car.
1997 Nissan Laurel ClubS25t
2001 Legacy Gt Ltd(167awhp&165.7awtq)Best 00-04 Legacy at WCSS11(West Coast Subaru Show)
1992 Legacy SS(Sold)
1991 Legacy L Wagon(Sold)(400,000+miles and running strong!!)
2001 Legacy Gt Ltd(167awhp&165.7awtq)Best 00-04 Legacy at WCSS11(West Coast Subaru Show)
1992 Legacy SS(Sold)
1991 Legacy L Wagon(Sold)(400,000+miles and running strong!!)
Doesn't this have something to do with the charcoal canister? I remember someone on another Subaru forum talking about how when we fill the tank right to the tip it can go into the charcoal canister and create this issue.
1993 Subaru Legacy L AWD Wagon R.I.P
1994 Subaru Legacy SS R.I.P :(
2004 Nissan Titan LE 4X4
2007 Subaru Legacy GT :)
1994 Subaru Legacy SS R.I.P :(
2004 Nissan Titan LE 4X4
2007 Subaru Legacy GT :)
It may be related to the charcoal canister and the newer style pumps that take the gas fumes back up through the nozzle.
If the vapors are very rich or it gets liquid in the dispenser nozzle, the pump will shut off.
If the charcoal canister/evap system isn't working right, there may be more vapors in the tank that could be causing the pump to shut off prematurely.
It's stretch, but that's about all I can think of.
If the vapors are very rich or it gets liquid in the dispenser nozzle, the pump will shut off.
If the charcoal canister/evap system isn't working right, there may be more vapors in the tank that could be causing the pump to shut off prematurely.
It's stretch, but that's about all I can think of.
Josh
surrealmirage.com/subaru
1990 Legacy (AWD, 6MT, & EJ22T Swap)
2020 Outback Limted XT
If you need to get a hold of me please email me rather then pm
surrealmirage.com/subaru
1990 Legacy (AWD, 6MT, & EJ22T Swap)
2020 Outback Limted XT
If you need to get a hold of me please email me rather then pm
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legacy4ever
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This thread makes me so happy as now my entire junior high /highschool days have been justified in one post 
it does happen on most cars , especially after driving on long distances with low fuel , and moreso more often on hot days with low fuel and even MOreSo with fuel-injected vehicles
hot pavement heats the fumes in the empty tank causing it to balloon somewhat , when you remove the gas cap it goes fussssssssssss and smells real rich
IF you jam the nozzle into the opening it will create a seal and as you add fuel to the tank the fuel expands and causes the rush of air out the neck and does in fact push the plunger inside the fuel nozzle in reverse causing the pump to shut off - the plunger is sensitive to a flood of bubbles and moreso a rush of air
2nd job ever for me as a irving gas jockey ... no i am not bragging'
the fix is to back the nozzel out of the tank an inch or two and dial it back a notch or two , depending on the diameter of the nozzle and the fill hole
the pump will stop when the frothy bubbles flood the neck and up the free section of the nozzle where fuel does not rush out as it is devided into two sections - and because the filler neck design is somwhat tapered - pressure builds near the tip and moves the plunger always before rushing fuel will
this all of course assuming you have a full throttle grip on the pump trigger - if you try to fool the plunger you will by going super-duper slow
points of caution
in a gas can example , you can fill the fuel into the can half way , submerse the nozzle past the fuel level and the pump will continue fueling the can with a submersed plunger
**also one might be carefull in the winter as blowing snow will freeze the plunger inside the nozzel and cause the exact oppsite and overflow the tank
my 00.1,000,000 cents as i spent way to much time pumping gas in grade school
it does happen on most cars , especially after driving on long distances with low fuel , and moreso more often on hot days with low fuel and even MOreSo with fuel-injected vehicles
hot pavement heats the fumes in the empty tank causing it to balloon somewhat , when you remove the gas cap it goes fussssssssssss and smells real rich
IF you jam the nozzle into the opening it will create a seal and as you add fuel to the tank the fuel expands and causes the rush of air out the neck and does in fact push the plunger inside the fuel nozzle in reverse causing the pump to shut off - the plunger is sensitive to a flood of bubbles and moreso a rush of air
2nd job ever for me as a irving gas jockey ... no i am not bragging'
the fix is to back the nozzel out of the tank an inch or two and dial it back a notch or two , depending on the diameter of the nozzle and the fill hole
the pump will stop when the frothy bubbles flood the neck and up the free section of the nozzle where fuel does not rush out as it is devided into two sections - and because the filler neck design is somwhat tapered - pressure builds near the tip and moves the plunger always before rushing fuel will
this all of course assuming you have a full throttle grip on the pump trigger - if you try to fool the plunger you will by going super-duper slow
points of caution
in a gas can example , you can fill the fuel into the can half way , submerse the nozzle past the fuel level and the pump will continue fueling the can with a submersed plunger
**also one might be carefull in the winter as blowing snow will freeze the plunger inside the nozzel and cause the exact oppsite and overflow the tank
my 00.1,000,000 cents as i spent way to much time pumping gas in grade school
N1446 Brutus
91 Legacy SS 5mt 2.5GT Swap
Legacy GT Suspension, 16" Fozzy Wheels, 2.5RS OBX EL Headers, Gutted Mid-Pipe, Subaru Catback c/w AWD BABY !
91 Legacy SS 5mt 2.5GT Swap
Legacy GT Suspension, 16" Fozzy Wheels, 2.5RS OBX EL Headers, Gutted Mid-Pipe, Subaru Catback c/w AWD BABY !
