Useful Tips

Tip 1: How to drain gasoline from the tank


Most often, motorists pour gasoline into the tank, however, there are situations when it is necessary to carry out the reverse process, i.e., to drain gasoline from the tank. Most often it is necessary to do this when it is necessary to clean or repair the fuel tank, it is impossible to get to the fuel pump or help another motorist to replace the fuel pump. Are there any universal methods which are suitable for all brands of cars from frets to Nissan? There is!

Consider 2 universal methods how to drain gasoline from the tank, they are suitable for any car brand, be it Lada, Toyota, Ford, Chevrolet or Nissan. Using these methods, you can easily drain gasoline in just a couple of minutes. We will analyze each of them in detail.

Method number 1 - if there is no grid in the tank

Most often, the grid in the tank is absent in cars of the Russian assembly, for example: Lada, Gazelle, Volga, etc. To drain the fuel, you should use a special tube, this is the most primitive, most common, old-fashioned way.

What we need:

  • hose,
  • the capacity in which we will pour gasoline.

Drain process: The first step is to open the gas tank by unscrewing the cap with filler neck. Next, one end of the hose is pushed into the tank, and the other is lowered into the container, into which it will be necessary to drain gasoline in the future. In order for gas to flow, it is necessary to create pressure, and to do this is quite simple with the help of air. It is only necessary to breathe in a little air through the tube. After that, you should lower the free end into the dishes and wait for the moment when gasoline flows.

Method number 2 - if the grid is installed in the tank

The first method is suitable only for those cars that do not have a grid on the gas tank. If it is, and it is available on almost all modern Japanese cars, then you need to do a little different. This method is faster and safer than the first one, since the first option is more likely to inhale gasoline vapors, which can lead to poisoning by vapor.

What we need:

  • set of tools,
  • a canvas that can be laid on the ground,
  • gloves
  • the capacity in which we will pour gasoline.

Drain process: For the second option, you just need to open the cover located at the bottom of the gas tank. To do this is not so simple as it seems at first glance, because for this you will have to get to a rather inaccessible place - to the bottom of the fuel tank, and only after that you need to unscrew the cover. After these manipulations, you can proceed to drain the gasoline.


The first option is convenient to use if it is necessary to pour a small amount of gasoline out of the tank, for example, in order to help one of the motorists left on the highway without fuel. The second option is great for draining all the gas from the tank. Which one to use, each person must decide for himself, but in any case, safety precautions should be observed.

The content of the article

In such situations, at least once every person has got. As a rule, it is possible to solve the problem of how to drain gasoline from the tank by contacting your friends or completely strangers who can help you out. The main thing is to transfer fuel quickly and as safely as possible for another car.

How to drain gasoline with a hose

This method is one of the most common. Probably every motorist knows him. It is necessary to take a hose and some container where the fuel will be poured.

Then lower one end of the hose into the tank of the donor vehicle, and place the other into a filled container. Gently blow air by inhaling it with your mouth. Then quickly lower the handset and watch the gas flow, waiting for the right amount.

Despite the simplicity of the process, not everyone can use this method. This is due to the structure of the gas tanks of some cars. In addition, a person is forced to inhale fuel vapors, which in one way or another will affect his health.

Therefore, for some cases, an alternative will be preferred. It involves unscrewing the plug of the gas tank of the machine. As a rule, it is located below.

How to drain gasoline from injection cars

The above methods are not suitable for more modern cars. Therefore, it is advisable to use the following method, how to drain gasoline from the tank:

- open the neck of the gas tank

- open the hood cover and find the base of the rubber tube located at the bottom of the engine, it is necessary so that gasoline moves to the ramp,

- remove the clamp, disconnect the gas hose,

- turn the key in the ignition,

- then we look for the fuse block and remove the relay responsible for the operation of the fuel pump,

- using a regular paper clip, we bind a pair of correct contacts in the socket,

- Now you can start draining the fuel into a previously prepared container.

In this method, it is important to carefully monitor the process. If bubbles appear in the fuel draining, everything must be stopped and the ignition turned off. If this is not done, then it is possible to disable the fuel pump of the donor car.

Next, we return the clamp and hoses to the place. We also install a relay in the socket, close the gas tank plug.

Now you know some effective ways to drain gasoline. Following these simple tips, you can help a motorist who suddenly runs out of fuel, or to himself, if necessary, drain gasoline from the car.

1. Carburetor engine

If you need a small amount of gasoline, such as half a liter or a liter and you have a carburetor engine, you can do the following. Start the engine, let it run a little. Open the hood and find the carburetor. Usually it is located approximately in the middle of the engine compartment and is mounted on the intake manifold.

Find the fuel supply hose, it should go visually from under the vehicle’s underbody and fixed along the body, then put on the carburetor fuel supply fitting. We will need him. Do not confuse with other hoses, because one of the other hoses is the selection of crankcase gases. Look where they are going, so as not to be mistaken.

Usually the hose is put on and removed with a simple movement without effort. But it may turn out that it is reinforced with a clamp. In this case, loosen the clamp with a screwdriver. Substitute the tank and enjoy the process:

Having prepared a container for gasoline (for example, a plastic bottle), without stopping the engine, disconnect this hose from the carburetor. Gasoline should pour out of it. Substitute the container and enjoy the process. Periodically connect the hose back to the carburetor to fill it with a supply of gasoline and the engine will not stall. Repeat these procedures until the required amount of gasoline is collected in the tank.

Gasoline, which is in the chambers of the carburetor, will not allow the engine to stall, so the engine will work for a while at idle. The gas pump, if located in the tank, will also work, so gas will flow out of the hose in a small trickle, which is what we need.

Be careful not to let escaping gasoline get on the hot parts of the engine and exhaust manifold, otherwise it may result in a fire. It is most convenient to do this together - one is sitting in the driver's seat with the door open, the second is draining gasoline and, in which case, gives a command to turn off or start the engine.

After this procedure, put the hose back in place and tighten the clamp (if it was there). When you start the engine, you will likely have to twist the starter for longer so that the gas can fill all the carburetor channels and get into the ignition system. Also, do not be surprised if the engine will work unstable at first and even stall - it will pass. He just needs to work out until the gasoline level in the system recovers.

This method is good for domestic carburetor cars.. On most foreign cars, it can be unsuccessful if, for example, the electronics detect depressurization and block the fuel supply, or if the necessary pressure in the fuel system is not created to run out of gasoline. Personally, I used to pour gas with Honda Integra in such a way in order to make a fire in the winter 🙂

2. Through the neck of the tank with a hose

Everyone knows the way. Only a hose is needed, the desired length is about a meter. One end of the hose is lowered into the tank so that it is immersed in gasoline. To determine how deep it needs to be lowered into the tank, you can follow the traces of gasoline. Lowering it every time deeper, we get out and see if the end is wet. When we see that the end of the hose is wet in gasoline, lower it to the same depth + 20-30 cm.

We substitute a tank for gasoline and blow air into ourselves from the second end of the hose. In order for gas to flow, you need to create a vacuum in the hose. Be careful not to get gas in your mouth. To do this, when inhaling, make the distance between the lips to a minimum, and also perform in several passes until gasoline pours.

It is very important that the end of the hose is lower than the filler neck of the tank. Otherwise, nothing will come out of the laws of physics. As soon as the necessary vacuum is created in the hose, gasoline will begin to flow into the area of ​​lower pressure.

When he reaches the filler neck vertically through the hose, he will go through it and flow down to the other end of the hose where you hold the container. With a certain dexterity, you can manage to remove your mouth from the hose so that gasoline does not get on your skin. By the way, it is better to use a transparent hose, on it you will see where the gas is and remove your face in time.

Specialized hoses for pumping liquids are sold at car dealerships. In order not to have to suck in air through the mouth, there is a special extension on these hoses in the middle, in which the valves are located. In this case, it is possible to create the pressure necessary for pumping by pressing the pear with your hands. Convenient and practical.

3. Complete discharge of gasoline from the tank

If you need to remove low-quality gasoline or foreign liquid from the tank, then only a complete drain will help. The features of this procedure depend on the model of your car.

Having arrived at the inspection hole or overpass, inspect the lower part of the tank, if it is located in the luggage compartment. If you are lucky, you will find a drain plug that is unscrewed with a key. When you unscrew it, be prepared for the fact that gasoline will run from there in large quantities. It is better to think at this moment not about the traffic jam, but about how to quickly substitute the container.

The cork can then be removed from the tank with gasoline, if it falls there, using a magnet. Make sure that the volume of the tank is enough to completely drain all gasoline from the tank. If necessary, prepare several containers so that they can be substituted if one is filled.

If there is no drain plug on the bottom, then you probably have a different gas tank location or its design does not include a drain. Perhaps the tank is located at the wing. In any case, it is better to first look at the car's operating instructions, there this procedure will be described specifically for your model.

Drain with removal of the fuel pump:

It is also possible that in your car model, to empty the tank, you need to remove the gas pump. On some models, it is located behind the rear seats. That is, first you will need to remove the backs of the rear seats and get to the pump, then unscrew it. I do not advise doing this without the necessary experience, because in this case gasoline can get into the cabin, it is unpleasant and can damage sensitive seat materials or trim.

And one more way - if you have a special valve or cap for draining in the fuel system, you can put on it a hose leading to the tank, then forcibly turn on the gas pump. You can force it on by supplying it with battery power. Usually, a jumper installed correctly in place of the fuel pump relay and ignition is sufficient.

So, if possible, it is better to simply go to a gas station and fill in the canister with the right amount of gasoline. If this is not possible, then you can try the methods indicated in this article. Just keep in mind that for modern cars of recent years, in which electronics monitor everything, interference in the system can cause errors that can only be reset at the service center.

Therefore, if you have a new foreign car with electronic intellectual "stuffing", then it is better to go to a car service right away, specialists will pour gasoline there. Just remember to bring a can of fresh gas with you so you don't have to look for it later.

In conclusion, I will give a diagram of the fuel system for supplying a carburetor engine so that you have a better understanding of its operation in the car:

Carburetor Fuel System

1 - a jellied mouth of a tank with a cover
2 - gas tank
3 - float fuel level sensor
4 - fuel intake with filter
5 - fuel lines
6 - fuel fine filter
7 - fuel pump
8 - carburetor float chamber with a float
9 - air filter
10 - carburetor mixing chamber
11 - inlet valve
12 - inlet pipe
13 - combustion chamber

Ways to drain gasoline from a foreign car tank

If a grid is installed on your car in the gas tank, and you can’t drain the gas with a hose, don’t be upset. There are several simple ways to drain the fuel from a foreign tank.

In any case, it is worth remembering that gasoline should be drained from the tank only in an open area, so as not to be poisoned by fuel vapors, which are very harmful to human health.

Many modern cars have a special drain hole at the bottom of the gas tank, which allows you to completely drain all the fuel from the tank. You just need to find this hole, substitute a suitable container under it and, unscrewing the cork, pour gasoline into it.

This method is very simple, but not all cars have drain holes, and crawling under a car is not always convenient. Therefore, we will consider another option, how to drain gasoline from a tank of a foreign car.

In order to drain gasoline from the tank of a foreign car, you need to perform a few simple steps:

  1. Open the hood of your car
  2. With the engine turned off, disconnect the fuel hose (coming from the gasoline pump) at the point where it is connected to the engine.
  3. Place the loose end of the hose in a suitable container to drain the gas from the tank (bottle, canister, etc.).
  4. Turn on the ignition of the car, but DO NOT START THE ENGINE! In this case, the gas pump will turn on for a few seconds and pump fuel. Thus, turning the ignition on and off several times, you can drain a sufficient amount of gasoline from the fuel tank.
  5. After you have drained the required amount of gasoline, the fuel hose should be reconnected to the engine.

Keep in mind that it is better not to drain all gasoline from the tank in this way, so as not to damage the fuel pump and not to air the fuel system of the machine.

By the way, on some injection engines of modern foreign cars and VAZ family cars, the manufacturer has provided a special fitting that allows you to drain gasoline from the tank without disconnecting the fuel hose from the injector (see the example in the video below).