Gas Pump Shutting off
 

Ok so here is the deal. For some reason the past four times that I have tried to fill up my gas tank it will go .05 - .07 cents and shut the pump off. I thought maybe it was the pump or gas station so I went to another station and still the same thing. My husband thought it was just me so I made him go with me the next time I got gas and it does it to him to. Any ideas?

RE: Gas Pump Shutting off
 

Sounds like a car with a plugged fuel tank vent. One cause of this is topping off. You will probably need to take it to the dealer.

RE: Gas Pump Shutting off
 

I had the exact same problem. I would try to pump gas and it would shut off after like 3-5 seconds. I took it to the dealership and they had to replace 3 parts: the purge valve, the coal canister, and something like a DMTV module or something like that. The cause, they said, was topping off. Everytime you top-off a little bit of gas and residual crap gets caught up in the coal canister(I guess that iswhat it is therefor) and it slowly builds up over time and creates problems such as this.
Unfortunately, now I am having problems keeping the gas in my car. I can pump gas now, but every time the nozzle shuts off, gas spews out of my car into a puddle on the ground. Any ideas? I have taken my car in three times so far and they still cant get it right. Hopefully you will have more luck and if you find out any other info please post. Thanks.

RE: Gas Pump Shutting off
 

OK here is the thing. Last week I took in my '01 Accent to the dealer for the same problem. It was the Canister, canister DMTL and purge valve. There is a box below the fill pump with charcoal and it leaked out causing the fuel to stop pumping. It is a common problem with Accents and Elantras. If your car is under 5 yrs it is covered. If you have the HPP for 10 yrs you are OK.

RE: Gas Pump Shutting off
 

I have the same problem. I have always been in the habit of filling the tank with gas to the max so I can calculate MPG. It has never been a problem with any other car I ever had. Anyway, my '99 Elantra got to the point to where I couldn't put any gas in the thing unless it dribbled from the nozzle. Today I got under the car near the fill nozzle and took the big hose off the charcoal canister underneath. It was clogged with little bits of charcoal, which poured out. With the hose off, I went around the corner to the local gas station, and was able to fill the tank as fast as possible. I figure I'll let the charcoal canister dry out for a while, as I suppose it's saturated with gas, then I'll reconnect it. I'll let you know how it goes.

RE: Gas Pump Shutting off
 

I tried putting my charcoal canister hose back on and filling up today, but it's still won't let me fill. I pulled off the hose again. Update later.

RE: Gas Pump Shutting off
 

Found the repair proceedure:

general diagnostic procedures: hard-to-fill fuel tank[/align]DESCRIPTION[/align]All 1999 and later Hyundai vehicles incorporate a new emission control system known as On-Board Refueling Vapor Recovery (ORVR). A general schematic of the system is provided below. [/align]Some owners may experience difficulty filling their vehicle with gasoline and a premature shut off condition as a result of the gas pump nozzles installed at their gas stations. The nozzles at these stations are in the process of being retrofitted or replaced by the nozzle manufacturers. In the meantime, owners should follow instructions posted near the gas pump, and/or try filling the vehicle at a different gas station.[/align]If the refueling difficulty continues, verify that the 1/2" vapor path from the fill vent valve on the gas tank to the air filter on the charcoal canister (see schematic below) is completely
free and clear. To perform the procedure below, make sure the fuel tank is below 1/4 tank full.[/align]To quickly determine the general location of a possible vapor path restriction:[/align]Disconnect the hose connected to the canister side of the liquid-vapor separator (see schematic below).[/ul]Take the vehicle to a known "good" or major brand gas station.If the vehicle readily accepts fuel, the restriction is located between the liquid vapor separator and the air filter.[/align][/ul]If the vehicle does not easily accept fuel, the restriction is located between the liquid vapor separator and the fuel tank.[/align][/ul][/ul]http://www.hmaservice.com/files/331/...0/9930002a.gif[/align]On-Board Refueling Vapor Recovery (ORVR) Schematic[/align]The following components are contained in the ORVR system:[/align]Vapor hoses[/align]Liquid-Vapor Separator(s)[/align]Fuel Fill Vent Valve[/align]Fuel Cut Valve (anti-spitback)[/align]Canister Close Valve[/align]Air Filter[/align]Charcoal Canister[/align][/ul]http://www.hmaservice.com/files/331/...0/9930002b.jpg[/align]After the restriction has been isolated to either half of the system, inspect each component to make sure it is free and clear of any restrictions. Verify that no
back pressure can be felt anywhere between the fill vent valve and the air filter at the canister.[/align]NOTE[/align]1999 Accents have two (2) liquid vapor separators: one located on top of the fuel tank, the other located alongside the filler neck.
[/align][/align][/align]http://www.hmaservice.com/files/331/...0/9930002c.jpg[/align]When checking the liquid vapor separator, blow through one end of the pipe using lung power. NO
back pressure should be felt. [/align]http://www.hmaservice.com/files/331/...0/9930002d.jpg[/align]Verify that the Fill Vent Valve is open by carefully removing the valve and confirming that the white plastic shut-off plunger moves freely inside its cage.[/align]http://www.hmaservice.com/files/331/...0/9930002e.jpg[/align]If the fuel cut valve plunger is stuck closed, a hard-to-fill condition may result. Verify that the plunger moves up and down freely allowing fuel to enter the tank, but does not allow fuel to travel up the neck (under pressure). The plunger should be "up" (closed) in its free state. [/align]http://www.hmaservice.com/files/331/...0/9930002f.jpg[/align]IMPORTANT[/align]When working with the Fill Vent Valve and associated plumbing, be sure to replace the hoses into the proper hose clips to prevent fuel from getting trapped / puddled in the vapor hose. Return fuel from the liquid-vapor separator must have a clear path to drain back to the tank.
[/align][/align]Four Way Valve [/align]Purpose:
The Four Way Valve provides an additional vapor path to the canister during refueling. [/align]http://www.hmaservice.com/files/331/...0/9930002g.jpg[/align]NOTE[/align]1999 Sonatas have a Four Way Valve located between the liquid vapor separator and fuel tank.
[/align][/align]Proper operation of the valve is as follows: [/align] Air flows freely in either direction through the 1/2" ports. [/align] Air flows freely in either direction through the 1/4" ports.[/align] Air flows from 1/2" port to the 1/4" port when blowing into one of the 1/2" ports while plugging the other 1/2" port.[/align] Air does not
flow from 1/4" port to the 1/2" port when blowing into one of the 1/4" ports while plugging the other 1/4" port.[/align][/ol]http://www.hmaservice.com/files/331/...0/9930002h.gif[/align][/align][/align]warranty information:[/align]Normal warranty operation codes and times apply.[/align][/align][/align][/align] [/align]

RE: Gas Pump Shutting off
 

jsinton:
I have the same problem. Once I disconnected the hose, let bits of charcoal out, then filling looked fine (first two times stopped and kept going on). After a few days, the filling issue started again. And I found bits of charcoal in the hose. In my case, the canister is problem? May I have any information of the canister and its replacement?
I have a 2002 Accent L (hatchback).
Thanks,

The problem is little bits of charcoal in the filler vent. You have to take out the filler tube and replace or clean out the vent valve. Then there's the canister valve, the rest of the hoses, the purge valve. These all might have some charcoal. Good luck.

So is this gas-pump-shutting-off problem unique to Hyundai or do all new cars use this system? What causes the bumping noise when stopping that accompanies this problem?