Recent Topics
F1 tire supplier, Pirelli buyout by Chinese state
by wemay
30 minutes 20 seconds ago
Pirelli buyout by Chinese state co.
by wemay
33 minutes 14 seconds ago
Tire/wheel required no weight to balance?
by The Critic
49 minutes 5 seconds ago
NGK 7446 Laser Iridium at 190,000 miles
by The Critic
Today at 02:12 AM
10w-20w-40
by mjoekingz28
Today at 12:57 AM
Adding Royal Purple HPS to Regular RP
by CamAllen
Yesterday at 11:28 PM
Gearbox failure post mortem
by AdamC
Yesterday at 11:14 PM
Anybody looking forward to Baseball Season?
by hotwheels
Yesterday at 10:43 PM
Oil Recommendation for a 1966 Ford F100
by Death_Eagle_571
Yesterday at 09:58 PM
Squeeze all the life out of your oil?
by oliveoil
Yesterday at 09:32 PM
Nice patina!
by hotwheels
Yesterday at 09:24 PM
diff and brake fluids for bmw x3
by ryan2022
Yesterday at 09:02 PM
Newest Members
CamAllen, Death_Eagle_571, andx0r, macdzich, rospaw
53332 Registered Users
Who's Online
29 registered (bbhero, Death_Eagle_571, Duke, drtyler, CamAllen, 901Memphis, 3 invisible), 503 Guests and 188 Spiders online.
Key: Admin, Global Mod, Mod
Forum Stats
53332 Members
66 Forums
228745 Topics
3654925 Posts

Max Online: 2862 @ 07/07/14 03:10 PM
Donate to BITOG
Topic Options
#2282350 - 06/08/11 10:48 AM gas station pump shuts off automatically....?
ahoier Offline


Registered: 02/03/10
Posts: 1720
Loc: Cocoa, FL
Hello:
Noticed this 2 subsequent fuel ups so far.....last week, I fueled up at a Chevron station, and I would squeeze the trigger and I would hear/feel the gasoline coming through the hose/pump, and after a couple gallons the pump would shut off, as if the tank was full (it was not, gas gauge was at 1/2 and did lots of driving that day lol).

No, the gasoline wasn't leaking out of the tank, or under the car, or anything like that, no "unusual" gas smell or anything...

Well, that was 2-3 weeks ago...now last night, I went to fill up at a Shell station (let it be known, neither of these stations are my "typical" station of choice to fill up.....but I knew I needed fuel hehe) and yet again, the pump kept shutting off as if the tank was full....

And this time it was NOT full, it was almost on E....heh.


So, is this a mechanical problem with my vehicle? If so, what could it be?

Or is this just 2 "fluke incidents" of crazy/defective gas station pumps? As I said, these fill ups were spaced out 2-3 weeks or so...it was funny, cause my passenger was like [censored], are you having difficulties? And I was like no, it won't stay pumping! and I knew the gas tank was not "full" because like I said, it was almost to the E, and my typical fill up is 10 gallons, and the pump was cutting off even after like 2 gallons...


Could it be an obstruction of some sort? How does these pumps work? I'm guessing they work by vacuum or something, and as they gush the gasoline into the tank, they get a sense of how much emptiness is left in the tank?


Anyways, as a last resort I just barely put the petrol pump into my fuel tank, and pushed the trigger, and that actually seemed to work a "little bit" better, albeit having to actually "hold" the pump (rather than it resting in my fuel tank....).


Any ideas?

Top
#2282355 - 06/08/11 10:58 AM Re: gas station pump shuts off automatically....? [Re: ahoier]
OldCowboy Offline


Registered: 05/28/11
Posts: 734
Loc: SW Missouri
I've had this happen occasionally. Sometimes it's a pump that is pumping too fast. Other times, I didn't have the nozzle in far enough. I doubt there is anything wrong with your fuel inlet. Just use one of the lower flow settings.

Top
#2282357 - 06/08/11 11:01 AM Re: gas station pump shuts off automatically....? [Re: ahoier]
urrlord Offline


Registered: 09/25/08
Posts: 505
Loc: central ga
Some of the pumps use an air pressure sensor to cut off the gas flow.As the gas tank fills, the air pressure increases(esp when the filler neck is reached)which trips the shutoff .Back when i pumped gas for a living there were a few models of car that would trigger the shutoff after a gallon or two.You had to pump the gas at a very low flow or position the nozzle where it was angled and allowed more air to escape.The gas stations you stopped at may have a different(higher) flow rate on their pumps from what you are used and if you pumped like you normally would it could trigger the sensor.There could be differences in the nozzle design or sensor setting that do not work well with your car.
Or it could just have been flukes.lol

Top
#2282360 - 06/08/11 11:04 AM Re: gas station pump shuts off automatically....? [Re: urrlord]
HBCALI Offline


Registered: 12/06/10
Posts: 114
Loc: United States
Yeah, it happens. VERY ANNOYING when you're in a hurry. It's almost 99.9% an issue with the gas station. Don't worry about your car. If it keep happening every time you fill-up at every gas station, then start to wonder. But until then, just use another pump / station.
_________________________
Have Used:

Royal Purple
Valvoline SynPower
Mobil 1
And honestly - I canít really feel the difference between any of them.

Top
#2282373 - 06/08/11 11:22 AM Re: gas station pump shuts off automatically....? [Re: ahoier]
eljefino Offline


Registered: 06/15/03
Posts: 25680
Loc: ME
More than often it's smog pumps too, the ones with the bellows you have to jam against your filler neck.

My cutlass ciera used to do this randomly. Sometimes holding the filler "gangsta style" helps.

Top
#2282375 - 06/08/11 11:25 AM Re: gas station pump shuts off automatically....? [Re: ahoier]
Carbon Offline


Registered: 09/04/09
Posts: 489
Loc: near Chicago
In addition to those good suggestions, inspect under the car to look for any damage to the filler tube or tank.

Use the lowest lock position on the nozzles if you did not try that already.

Top
#2282383 - 06/08/11 11:29 AM Re: gas station pump shuts off automatically....? [Re: ahoier]
rshaw125 Offline


Registered: 08/18/04
Posts: 2636
Loc: Raleigh ,NC CSA
My Ford Explorer does this when I am filling it from just about empty.It's the air/fumes rushing out of an almost empty tank.
_________________________
2012 Porsche Carrera S
1995 Plymouth Voyager

Top
#2282396 - 06/08/11 11:44 AM Re: gas station pump shuts off automatically....? [Re: ahoier]
ahoier Offline


Registered: 02/03/10
Posts: 1720
Loc: Cocoa, FL
Ok. I kinda figured it had to be the pump itself. At the Chevron station (the first time it happened) it had me and my buddies thinking maybe the station just ran out of gas, cause I put $10 or so in, and then finally gave up, cause the trigger just wouldn't stay, and wasn't about to go spraying gasoline on the cement lol..I'll just have to pay more attention next time I pump. I generally stick to the same station, but being that I was inthe area, I used those stations.


And yea, we don't have "smog pumps" here, just the typical pump with the ring around the trigger to stop gas from possibly splashing back at ya. but I do know what you're referring to from my visits to California wink

Top