Gas pump stops when tank is not full

Im in MA and the gas pumps are all equipped with vapor recovery systems. When gasoline in the tank rises high enough to block the hole a mechanical linkage in the handle senses the change in suction and flips the nozzle off.

An early shut-off can be triggered if the fuel is not flowing freely into the tank.

Gas pump stops when tank is not full. If the gas nozzle clicks off before your tank is full and this happens most of the time regardless of what station or pump you are using then there is something wrong with your tanks evaporative emissions system and you should probably get it fixed. When the tank is not full air is drawn from the tiny hole of the nozzle to the diaphragm due to suction. This goes on until the level of gasoline reaches the level of the hole or passes the hole.

As soon as the hole dips beneath the level of. So gasoline rushes back up your cars fuel filler tube toward you instead of into the tank hits that sensor hole on the nozzle and shuts off the pump before the tank is full. When I looked down the gasoline was streaming all over the side of the car and tire onto the ground where a nice puddle had already formed.

When the tank is full and the gasoline starts rising in the filler tube the pump auto shut-off must be activated. The car can not really do a lot. 5 anne1965 Sep 1 2009.

Gas pump keep stopping when try to fill up tank. Theres a fill tube thats the one the pump goes into and theres a vent tube its smaller and comes up to a small hole just above the fill tube. This vent tube is most likely clogged with some gunk.

You can try and blow some compressed air into the small hole above the fill. It doesnt matter what gas station its at. Every 10 seconds or so the pump stops as if the tank is full.

It takes 20 to 25 minutes just to fill up my tank. I have followed the advice of a couple of things I saw on the Internet including blowing pressured air through the line and replacing the vent valve but it has not fixed the problem. An early shut-off can be triggered if the fuel is not flowing freely into the tank.

Angling the fuel nozzle into the fill pipe differently usually does the trick. Holding the handle up instead of letting it hang down or rotate it a bit in the fill tube mouth. Every time you try to put gas into the car the gas pump nozzle either keeps clicking off when the tank is not full or spills out of the car.

I thought maybe the gas was coming out of the pump too fast so I slowed it down but it still did not help. Sometimes you can put gas into the car effortlessly like normal then sometimes the nozzle keeps. What this all means is that if youre filling your tank and the pump keeps cutting off something is blocking the little hole preventing a flow of.

If the previous owner topped off the tank when filling which is not a good technique then the vapor recovery system could be clogged with the charcoal canister full and now clogged and ineffective. Since this has been a problem since you bought the truck you cant tell what the previous owner did but I suspect he overfilled the tank and caused damage to the. The slow pumping means their filters need to be replaced and if the rate of flow is very low the return sensor may not trigger causing the tank to overflow - either that or the return hole essentially a venturi pipe with a spring trigger is not working at all.

The last two times I filled my gas tank It would take like 4 gallons then gas pump stops like the tank is full. Knowing there is no way it could be full I have to keep manually pumping gas in. It still takes another 8 gallons or more and I.

Suction is applied to this pipe using a Venturi. When the tank is not full air is being drawn through the hole by the vacuum and the air flows easily. When gasoline in the tank rises high enough to block the hole a mechanical linkage in the handle senses the change in suction and flips the nozzle off.

Just remove the hose clamp for the vent hose under car left side just in front of rear wheel narrower of the two hoses that run up to the filler and let the gas drain out. The gas in the vent hose acts like the trap under your sink - preventing air from exiting the tank. If none of that works and the pump is still working in spurts then it might be time to have a mechanic check the fuel tank for a clogged line.

It could also be a vent valve failure where the. The fuel filler neck is very narrow on the FJ cruiser and will cause the sense of a full tank at certain gas pumps especially ones with sensitive nozzles. If this issue happens all of the time then it is possible that the fuel filler neck itself has become damaged.

If you tend to fill your cars gas tank until its full rather than paying for a specific amount of gas youre very familiar with the thud that the pump makes when it shuts off. When I would try to fill up the tank the gas pump nozzle would clickstop as if the tank was full when it was not. I ended up going to the dealership to have it checked out.

They found a bad check valve in the filler neck so they replaced. Im suddenly having trouble filling the gas tank in my 05 Tahoe. The gas pump keeps shutting off as if the tank has filled.

This happens repeatedly as I try to fill my tank on several pumps in several different gas stations. Im in MA and the gas pumps are all equipped with vapor recovery systems. Trying to fill slowly does not help.

3 points 4 years ago. Usually yes unless it is broken or you jam it somehow. Just stick around in case - you arent supposed to leave it unattended.

People do try to top it off past the shutoff which isnt recommended and wont be enough to help much anyhow. The pump handle safety was intended to prevent you from overfilling your tank. In your case you have a fuel tank that is not venting quick enough and causing your fuel back up problem.

Your fuel tank has a two part tank with a crossover tube that equalizes the two parts of your tank. If the crossover tube or the fuel tank vent on top of the fuel tank is defective or. A few weeks ago after the first time she had issues when I had to fill it up I put the pump on the medium notch and after it stopped I manually controlled the pump and got about another 2 gallons of gas in the tank before it stopped again.

When I turned the key the gauge pegged out on the F and I guess it was actually full. For starters you may not even get extra fuel. Pumps are designed to automatically stop when air pressure changes are detected as the tank fills up.

Should you continue to add fuel.