The complexity of four-wheeled vehicles is growing every year, gradually turning into computers on wheels. But no matter how complex the intellectual automotive systems, they are powerless over the common human factor. Until the cars learn to refuel themselves, the question will still be what will happen if gasoline is poured into a diesel engine. Therefore, the information in this article will be relevant for many years to come.
What happens if you pour 95 instead of 92?
There is a widespread stereotype that the higher octane numberthe better for the car. but experienced drivers know that this is far from the case:
- The use of 95th gasoline instead of 92nd may in some cases lead to the loss of the right to warranty serviceif this is indicated by the manufacturer;
- This is especially true for old models of the domestic auto industry. Soviet "Zhiguli" did not allow switching to a higher octane number: engine performance dropped, soot appeared on the pistons;
- The desired increase in dynamics and power can only be obtained with the use of high-quality fuel. But today, in most cases, the 95th is obtained simply by adding chemical additives to the 92nd. These impurities can negatively affect a motor that is not suitable for them;
- Mixing two fuel fluids will do nothing good. The liquid with the lower octane number will end up at the bottom of the gas tank. The engine will have to go through a sharp painful transition from one fuel to another, which will adversely affect its performance.
In modern cars, this is not so bad. Usually, the manufacturer allows the use of both 92nd and 95th gasoline.
What happens if diesel is used instead of gasoline?
The consequences of this error will make themselves felt in the very first minutes:
- The ratio of mass to volume y diesel fuel much less than that of gasoline, which is why it immediately falls to the bottom of the fuel tank;
- Almost instantly, the diesel will be in the fuel supply system, and through it - in the engine. The driver recognizes this by the characteristic knock under the hood and the blue-black smoke from exhaust pipe;
- With a long ride in this mode, the "iron horse" will receive significant injuries. Filters and an injector are the first to be hit. Finally, driving can cause irreversible changes in the form of engine damage;
- The only way to eliminate the consequences of the error is to completely empty the gas tank;
- The indicated symptoms are valid only for the situation when there was at least a small amount of gasoline in the tank. If at the time of approaching the gas station it was practically empty, then the car won't even start , and refueling will have to be done on site. But pouring the mixture out of the gas tank will not be so easy. To do this, you will have to disassemble the fuel part.
And what if the opposite: gasoline instead of diesel fuel?
The reverse situations are much more common when instead of diesel fuel, gasoline was poured... This happens to drivers who have changed from passenger car on an SUV. Taking the wrong pistol out of habit at the gas station, the driver pours a completely inappropriate liquid into the tank:
- The best scenario for personal finance is possible only when the jeep drove up to the gas station with a completely empty tank. Then you can limit yourself to calling a tow truck and draining the tank. No additional hassle (replacement of filters or injector) is required, no matter how convincing the mechanics are;
- If there is a mixture of two types of fuel, the result will be an extremely toxic mixture for the "heart" of the car. A thermometer showing the state of the engine will show off scale values. During the trip, a wild roar will be heard, and the speed of movement will drop significantly;
- In severe cases, the motor will have to be replaced. And what more modern model machines, the more capricious it is about the quality of the substance poured into it;
- There is only one way to avoid calling technical services: if no more than 20% of a foreign substance has entered the tank. Then you need to continue driving, and then refuel again, this time with diesel fuel. And so several times, until the content is completely updated.
Filled up with bad gasoline: the car jerks, what to do?
Many years have passed since the release of the film "Gentlemen of Fortune", but the case of Vasily Alibabaevich, who poured donkey urine at the gas station, is still alive.
The first bells that announce that a malicious substance has entered the system:
- Drop in power;
- Significant delay between pressing the gas pedal and accelerating;
- The "Check engine" light comes on;
- The motor "spits" or completely stalls.
You can correct the situation yourself, without contacting technical services:
- You must have at hand complex fuel system cleaner... It is poured into the tank immediately after the onset of symptoms of use. low-quality fuel... Such a life hack will allow you to safely get to the next gas station with a good reputation;
- Replace filters: they are the first to suffer from the ingress of defective fluid into the system;
- It is also worth carefully examining the candles (devices for igniting the fuel-air mixture). If a layer of carbon is found on their surface, it is necessary to make an urgent replacement;
- General cleaning of the gas tank will not be superfluous. There can easily be dirt or sand that will negatively affect the operation of the car.
Multi-fuel engine: a godsend for the scattered
Back in the 20s of the XX century, engines appeared that could work on any type of fuel derived from oil. The system is made on the basis of conventional diesel engines, to which the following functionality is added:
- Warming up the supplied air;
- The special design of the combustion chambers ensures constant internal pressure values;
- Cylinders are available to provide different compression ratios depending on the situation. Throttle valves on each of them they are able to automatically change the angle of inclination. The first cylinder with low compression receives a specially prepared air-fuel mixture... The second cylinder is capable of receiving normal atmospheric air;
- Prevention of vapor formation by increasing pressure in the fuel system.
Multi-fuel motors are extremely easy to use and reliable enough. However, their wide distribution is hampered by relatively high consumption (compared to conventional diesel). In addition, such units are complex in design, which creates maintenance problems. Therefore, they can only be found on military equipment (for example tanks).
If a car could swear, it would tell a lot about what would happen if gasoline was poured into a diesel engine. For an iron horse, the type of fuel is just as important as gastronomic preferences for a person. Failure to comply with the operating rules can lead to significant damage and subsequent expenses for repairs.
Video: how to fix the mixed fuel situation?
In this video, mechanic Andrey Kolchagin will show what happens to the car, into which diesel fuel was poured instead of gasoline, how to fix the situation:
"Dummies" or "blondes" do not always find themselves in such situations; often even experienced drivers can get into trouble. You know, I myself was a witness of this situation - I have an acquaintance who bought a second car for his family (he also has one worker) - that is, only three cars. He dreamed of a powerful SUV for a long time - in his opinion, in order to save money, he still took a diesel engine (he chose for a long time). AND old car, his sedan (I will not advertise the brand is not the essence) left his wife. In general, as usual, I drove to the gas station after a really difficult working day (it's easier to say the brain was taken out) and got up to the gas station with gasoline, purely by inertia - then I just poured gasoline into the diesel engine! Realization came only after a couple of kilometers, when the car began to twitch and behave somehow strangely. So I decided to write an article on this topic, perhaps someone will need it ...
For starters, it should be noted that gasoline and diesel are essentially different, two types of fuel. Engines operate on different principles, although both there and there are pistons and a crankshaft with connecting rods.
Ignition principles of liquids
I will not tell you the same thing in detail ten times, let us recall it briefly.
Petrol ... The most common type of engine, and therefore remember it first.
Probably everyone remembers that it is a four-stroke (injection, compression, ignition, exhaust gas outlet). But the principle of ignition, here is based on spark plugs, and they ignite the fuel mixture (gasoline + air), which is supplied through intake manifold... Without the candles, the fuel would not ignite, although in fairness "detonations" sometimes occur, but very rarely. It is also worth noting that from about 9.5 to 11 atmospheres, this is important! Of course, now there are SKYAKTIV engines from MAZDA, where compression reaches 13.5, but still this is an exception to the rule, rather than a general trend.
Diesel (in Russia it is also called "diesel fuel") .
There are also four strokes (injection, compression, ignition, exhaust). But the fuel is ignited differently, there are no spark plugs at all, and the injection is completely different here. Firstly, I would like to say that the ignition of diesel fuel occurs due to compression (compression on diesel engines reaches 20 atmospheres). Secondly, the fuel is not mixed with air and is not supplied as fuel mixture - there is separate air and separate diesel fuel. How everything happens - the piston compresses the air in the cylinder, because of which it heats up very much, then almost at the peak point, fuel is injected, under very high pressure (through the nozzles), after which it ignites.
As you can see, the differences are significant, outwardly similar units, very different inside, and the fuel supply system is different here.
What happens if you pour gasoline into the "diesel"?
It's not very good to say the least. However, it all depends on how much gasoline you added, it happens that you have a tank of 100 liters, and you "splashed" only 5 liters, then the diesel engine most likely simply will not notice it - it will "chew" like a nice little one. I talked with experienced truckers, so before the appearance of "" they added a little gasoline to the tank so that the diesel was not so thick in the cold, they say - it really helps. However, the addition should be within 3%, well, maximum 4 - 5, no more!
However, if a very large amount, more than half or generally almost a full tank is poured, this can adversely affect the diesel engine, or rather, its systems. What happens at the beginning? Yes, everything just your car will stop and will not start. The thing is that, as I wrote from above, gasoline needs a spark, but the compression is like “on the drum”. Respectively normal work will fail and the engine will stall.
What will happen inside? Now I will describe as much as possible the bad outcome. SO:
- In the tank and the system of the car, there are fine and coarse filters, they are designed for diesel fuel, and if gasoline gets into them, and it is more "active" and liquid, then it will simply "kill" them. Definitely a replacement.
- A terrible word for all owners of diesel engines - injection pump (fuel pump high pressure) + associated injectors that inject this fuel into the cylinders.
So they are "sharpened" for a diesel engine! "How does it manifest?" - you ask. Everything is simple modern diesel fuel, so to speak - oily fuel, there is a small amount of lubricating compounds in the composition, it is they who lubricate the injection pump and nozzles, prolonging their life. But in gasoline there is no such thing, on the contrary, it is an excellent solvent, that is, it washes away all lubricants. Also, gasoline is much thinner, it has a completely different consistency. Thus, these important elements may fail - and it is oh, how not cheap, if you change all 4 nozzles + the pump itself, then this is about 20-30% of the cost of your car. I remember cleaning one injector with disassembly on a Volkswagen TUAREG came out at 14,000 rubles, and this is not a replacement - just cleaning!
In general, that's all - the engine itself will not suffer, the fuel system and filters may be "covered".
Actions after being noticed
I want to reassure you a little - if you noticed immediately, for example, at a gas station, or after a couple of minutes of work. Then in 80% of cases nothing terrible will happen, gasoline simply may not be pumped into the system. However, you need to perform a few simple steps:
- We jam cars and don't start it again! This must be learned!
- We call a tow truck or a friend with a rope to be towed to the service station.
- At the service station, they remove the tank and wash it - it is necessary, it is necessary - to completely remove the gasoline.
- Washed everything, usually done compressed air, again, we remove the leftovers from the system.
- Replacement of fuel filters, fine and coarse cleaning.
If you are lucky, the fuel injection pump and injectors will remain intact. Then just bring normal diesel fuel, refuel and continue on the road. Of course, the work of cleaning the system will not be cheap, an acquaintance would give about 7,000 rubles, but it must be done, because if you do not follow these steps, then an expensive repair of the diesel fuel system is guaranteed!
Now video version
Here is such an article turned out, I think it was useful, look and read our AUTOBLOG.
Today we will analyze in detail the question: what to do if gasoline was poured instead of diesel? This situation can occur both through the fault of the car owner, who confused the pistols at the gas station, or through the fault of an inexperienced refueller. Although according to GOST, the nozzle for diesel fuel should be installed with a large pipe diameter, but not all companies are equipped with high-quality equipment.
Fuel entanglement situations can be divided into two types:
- a small addition to the available gasoline;
- full diesel filling into an empty tank.
In the first option vehicle can ride on the remains of gasoline for a while... The driver will notice the trouble from the problematic engine operation, as well as from the black smoke from the exhaust pipe. The fuel will not completely burn out, and, accordingly, soot and its residues will come out through the exhaust pipe.
In the second situation, the car simply won't start. Diesel fuel will prevent the petrol fuel system from doing this. We'll have to use the services of tow trucks.
Although diesel fuel and gasoline are derivatives of the distillation of petroleum products, they have different physical and chemical properties. For the manufacture of gasoline, fractions of lighter hydrocarbons are needed, and heavier ones are used for diesel fuel. There are also main differences during operation:
- to ignite diesel fuel, it is sufficient to significantly compress the air-fuel mixture;
- gasoline mixture with air, in addition to compression, needs an external ignition source (used car candles to form a spark).
High-quality operation of a gasoline engine occurs with compression within 9 ... 11 atm. There are several car models in the world that operate at 13 ... 14 atm, but this is rather an exception from general rule... During the maximum compression ratio, a spark from a candle is required to ignite the mixture.
A classic diesel engine does not have any spark plugs, since in the fourth stroke (compression) of the power plant, the hydrocarbon mass ignites on its own. This is facilitated by a higher compression ratio, reaching up to 20 atm. Diesel fuel and air meet in cylinders at high pressure. Due to significant compression, the air compressed by the piston heats up significantly, after which fuel is sprayed into the cylinder through the injectors. Then ignition occurs.
Let's explain what will happen if you fill in diesel instead of gasoline. On cars with a carburetor, diesel fuel can get inside the cylinders, however, ignition will not occur due to the relatively low pressure. There will be more problems for cars with injection.
IN injection nozzles diesel fuel is able to clog the passageways, and after that it will begin to flow into the crankcase, mixing with engine oil.
During such a short operation, the valves are capable of sticking, which will lead to pistons knocking on the valves, deformation of parts and possible breakage. This will cause the engine to jam. In some cases, you will have to spend money on expensive repairs.
Gasoline in a diesel car
This can usually happen to drivers who have recently bought their car on more economical diesel fuel. When gasoline has not yet entered the system, we recommend that you immediately call a tow truck. Independent experiments with what will happen if gasoline is poured into a diesel engine is not recommended so as not to spoil the engine.
If a small dose of "non-standard" fuel gets in the range of 5 ... 10% of the total mass, no special problems should arise. Diesel power point with difficulty, but "digest" the gasoline-diesel mixture. Sometimes even some truckers deliberately pour a small amount of gasoline into fuel tank, in order to more easily "survive" significant frosts, because thicker diesel fuel of low quality has an unpleasant property to freeze at low temperatures. In this case, the proportion should be below 2 ... 3%, so as not to cause costly damage to equipment.
If this rule is not followed, the filters are coarse and fine cleaning will become unusable from gasoline. This is due to the fact that more active hydrocarbons are included in this fluid. They enter into chemical reactions more easily and are capable of destroying unprepared parts from the inside.
The problem will appear for fuel pump high pressure nozzles. It will be easier for gasoline to pass through the pump, but diesel fuel contains a certain amount of oily elements in its composition. They provide lubrication to the injection pump and injectors. In the absence of such, the service life of the nodes is significantly reduced, up to an early failure. Repairing and replacing them will be quite expensive.
For transporting a car, both a tow truck and any other car towing a problem car on a cable are suitable.
Having sent the car to a service station, immediately explain the reason and all your further actions. There must be sure to flush the fuel tank and dry it from unnecessary fluid. As an additional safety measure, it is recommended to install a new fuel filter and clean the pump. However, these procedures are carried out when gasoline enters the system after the driver starts the engine.
Reconstructive operations
If the driver noticed in time an error with the filling of diesel fuel into the gas tank, then there is also no need to start the engine. This rule especially applies to injection machines. If, through negligence, the car has already been started, then you cannot do without a tow truck.
At the station, the following operations are standard procedures:
- draining the surrogate mixture and cleaning the gas tank;
- flushing of all pipes of the fuel line from the tank to the power plant;
- fuel replacement if necessary;
- installing a new fuel filter;
- drain engine oil and its replacement along with the filter;
- flushing the entire system using special fluids;
- complete replacement of spark plugs at the end of all procedures.
On average, all operations take up to 5 ... 6 hours, so you will need to look for another car for a while to move around the city.
If it is not possible to call a tow truck, then experienced motorists recommend draining the maximum of this mixture from the tank, and pouring the required amount of fuel instead. This will help you get to the nearest station on your own in some time. But you still cannot do without flushing.
An error at a gas station may not always lead to engine repair.
Confused gasoline with diesel fuel at a gas station? This can happen to anyone, especially if the family has two different cars or has a work car. What if in diesel car poured gasoline or vice versa - in this manual.
To distinguish between diesel and benzie new car, there are many tips - the work of the tachometer, the soundtrack, Finally, for those who are not particularly attentive, there are inscriptions on the gas tank cap, in addition, many tanks are equipped with necks that will not allow a gas pistol to enter the diesel tank at a gas station. Nevertheless, mistakes do happen - because of automatism or because of not too smart refuelers, which abound in gas stations in Russia. It also happens that a "Tajik" forcibly manages to push an inappropriate pistol into the neck.
In this case, the device modern machines with each new generation, it becomes more and more difficult and therefore more sensitive to the quality of fuel, therefore, damage to fuel systems and internal combustion engines appears earlier than on old cars. The fact is that gasoline and diesel work according to completely opposite algorithms. And the consequences of the error are different - depending on the type of car.
Gasoline in diesel
The situation when gasoline is poured into a diesel car is most common. People are switching to heavy SUVs, buying a second car for travel, taking a premium jeep, the basic versions of which are more often offered with diesel engines... As a result, at the gas station, drivers habitually pour gasoline into their new car, or the employees of the gas station, whose services are often impossible to get rid of (take the same BP network), pour the wrong fuel.
So, gasoline is splashing in your tank instead of "aromatic" diesel fuel. What to do? In this case, it will not be difficult to start the car: diesel fuel remains in the fuel system, which is enough to start the engine and a few minutes of work.
But you shouldn't do this until you remember exactly how much fuel you had before refueling and how much you filled the tank. If to Gas station machine drove up "on a light bulb", then after a few minutes gasoline will inevitably get into the engine. In this case, it is necessary to call a tow truck and take the car to the service station. This is the most painless option for your wallet, since the repairmen will just need to drain the tank and pour diesel fuel into it. In this case, do not even agree to replace filters, clean pumps and other stains.
These actions will be sufficient if there was a sufficient amount of diesel in the tank.
However, many, after refueling, do not even suspect that they have confused the pistols, and set off on the road. So, when filling almost empty tank gasoline diesel car will not travel long. After a few kilometers, the car will simply stall, and it will no longer be possible to start it. And this is even the most favorable course of events, since in the service you get off with only cleaning the fuel system: flushing the fuel tank, lines, replacing the fuel filter.
When mixed, diesel and gasoline form a fuel that is extremely harmful to the engine. In this case, the car will begin to lose power, the engine will rumble, and the engine temperature will creep up. Often the owners are guilty of the quality of diesel fuel of one or another gas station and do not even suspect that they have screwed up themselves, which is why they continue their journey and try to push the trigger harder into the floor in order to quickly get rid of the "low-quality" fuel.
The octane number of gasoline is a measure of its ability to resist premature ignition, and the cetane number of diesel fuel is a measure of how quickly the fuel can ignite. That is, the higher the octane number, the lower the cetane number, and vice versa. As a result, chaos is created in the combustion chamber, and the driver, plus everything else, hears as if metal shocks inside the engine. As a result, the engine wears out many times faster and can simply fail.
In addition modern cars equipped with an injection system common rail, which is lubricated due to the corresponding properties of diesel fuel, and gasoline does not possess these properties, which also leads to wear of the high-pressure fuel pump. So do not be lazy, unscrew the gas tank cap and smell - maybe it comes from there with gasoline.
If you started refueling a diesel car with gasoline, but realized your mistake in time, then do not rush to call technical services. First, look at how much fuel you have drained. With a tank volume of 50 liters, you can pour in about 10 liters of gasoline, then fill it up with diesel fuel to the eyeballs and, without resorting to high speed and especially noting all changes in the behavior of the car, continue driving. As soon as a quarter of the tank is empty, visit the gas station again and fill with diesel fuel to the brim. Do this until, according to your calculations, the entire tank is renewed.
You can also add oil for two-stroke internal combustion engines to the tank to improve the lubricating properties of the fuel at the rate of 30-50 ml per liter of gasoline filled in by mistake. Instead of oil, you can use additives to increase the cetane number, but all this must be filled up to full refueling diesel fuel tank so that everything is thoroughly mixed.
Diesel in gasoline
Reverse situations also happen. But when diesel fuel gets into a gasoline car, the situation changes dramatically. The density of gasoline is less than that of a diesel, therefore, during refueling, all diesel fuel sinks to the bottom of the gas tank and strives to immediately get into the fuel line. That is, almost immediately, drivers begin to feel the same knocks in the engine, loss of dynamics, and neighbors downstream also see clouds of black smoke erupting from the exhaust pipe.
The initial actions in case of an erroneous refueling are the same as described above: you must immediately drain the tank and refill the right fuel... However, the ingress of diesel fuel into gasoline engine for the most part does not face dire consequences. If the tank was empty and diesel fuel is the predominant substance in it, then the engine will stall almost instantly and will not have time to deteriorate. The compression ratio of the internal combustion engine and the spark from the spark plug are simply not enough to ignite the diesel.
The car must run on the fuel specified by the manufacturer. However, situations often happen when a driver or a gas station employee makes a mistake and refuel the car not with diesel fuel, but with gasoline. These two fuel materials differ from each other in a number of parameters: chemical composition, amount of impurities, viscosity of a combustible substance, density, ignition temperature. In order not to spoil the engine in case of improper refueling, the driver should know what to do if gasoline is poured instead of diesel.
When filling gasoline instead of diesel and trying to start the car, the fuel system first of all fails.
Engines internal combustionworking on different types fuel differ in their principle of operation. For example, in gasoline engines, the air-fuel mixture enters the cylinders and is ignited there using an electric spark. IN diesel engines The air / fuel mixture is heated and ignited by being compressed inside the cylinder.
What happens if the driver refuses gasoline instead of diesel by mistake? When these two fuels are mixed, a foreign mixture is formed, which has a detrimental effect on engine performance. Active fractions of hydrocarbons contained in gasoline mixture, enter into chemical interaction and begin to destroy unprepared parts: coarse and fine filters suffer. A problem also arises with the fuel pump: it is not lubricated with the necessary oily elements contained in diesel fuel. As a result of insufficient lubrication of the pump and injectors, the service life of expensive components is reduced, up to their failure.
Car repair in case of erroneous refueling
When filling a diesel engine with gasoline, the vehicle must be evacuated to a service station.
If the driver refueled gasoline instead of a diesel engine, then the engine cannot be started - this will save fuel system Your car and minimize repair costs. In this case, you should evacuate the car to a service station, where the fuel tank, fuel pump and fuel filter will be flushed. It is much worse if the driver did not immediately notice the error, started the engine and drove a certain distance, and then the car stalled. In this situation, the following work will be required:
Elimination of the consequences of "non-native" fuel entering the car's tank always requires a lot of time and money.
- Flushing the fuel tank;
- Flushing the fuel pump;
- Flushing or replacing nozzles;
- Replacing all filters completely;
- Replacing candles;
- Oil change with oil filter.
The consequences of an error, if gasoline was poured instead of diesel or vice versa, are always very sad. In the worst case, the situation will require a fairly large investment of time and money. To minimize these costs, it is important to notice the error in time and not start the engine, but tow the car to the service station.
