Let's start with the fact that during operation vehicle Drivers in some cases noted the appearance of a distinct smell of gasoline in the cabin or during the stay near the car.
It is important to understand that this sign indicates the need to carry out immediate diagnosis, since the smell of fuel often indicates the depressurization and fuel leaks.
In this article we will talk about why the smell of gasoline appears in the cabin when starting the engine or flammable, when it is located near the car with a working or muted, and what to do the driver in case of detection of such a malfunction.
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There appeared smell of gasoline in the car: reasons
So, we immediately note that the smell of gasoline in the car can appear not constantly, but only under certain conditions. For example, in severe frosts or in the heat when cold Engine only starts or after warming up power aggregate, when refueling full, etc.
In any case, it is necessary to establish the reason for the appearance of the smell. Note that in some cases it is quite difficult to solve the task quickly. It is necessary to gradually check the elements of the fuel system.
- First of all, you need to start diagnostics from the gas tank and its covers. Tank, especially on cars, may suffer. The tank fastenings still suffer, as a result of which he begins to shift. Also over time they come into disrete of the place of welded seams, etc.
Also should not be excluded and the likelihood of mechanical damage. One way or another, but even a minor leakage will mean that fuel flows, filling with evaporation of the car, etc.
Special attention also deserves the lid, which is screwed into the filling neck. In many cases, this place is the source of smell of gasoline. The fact is that the lid not only closes the tank tightly, but also has an additional valve.
The specified valve is needed in order to avoid increased pressure in the tank at temperature fluctuations and expansion of gasoline with heating. If the valve is scored or twisted, and there are problems with a sealing cover of the cover, then a distinct smell of gasoline will appear.
- We go further. If the tank is fine, then you need to inspect the fuel line, the locations of the connections and clamps, as well as check the integrity of the nozzles. According to the indicated highway, gasoline is supplied to the engine (feed) and its surplus are returned back to the tank (reverse).
Hoses can start leaking, the reliability of their fasteners deteriorates. It is quite obvious that in this case the leakage also occurs, and the evaporation of gasoline will be annoyed by the driver by the smell of fuel in the cabin.
The next element when checking is the fuel pump. On machines with fuel pump often under the hood or outside the tank. At the same time on the submersible gas station (located in gasoline for the fence of fuel and cooling), that is, actually "screwed" into the benzobac. As a rule, on many cars with an injector pump is located under rear seat Right in the cabin TC.
If problems with the gasket appear in the installation site of the electric pump, cracks or damage the lid carving, etc., then a steady smell of evaporating gasoline appears in the cabin.
Fuel filters, especially if they are contaminated and reduced bandwidth, can also cause gasoline smell in the machine. The reason is the growth of pressure in the fuel line, after which the locations of the connections of the nozzles begin to flow, gasoline can flow at the "input" before or on the "output" after the filter itself.
To eliminate this reason fuel filter It is necessary to change, and within the framework of further operation, to properly select an element for a specific car and replacing the filter for the regulations, not allowing strong contamination of the filter element.
- The power supply system with the carburetor requires a separate check of this fuel-feed system into the engine. Often, while its improper adjustment or malfunction of the device leads to the fact that gasoline is overflowing.
Naturally, active fuel evaporation in open space There will be a cause of gasoline vapor to the salon. To this not happened, it is necessary to properly adjust the fuel level in the float chamber, check the state of the jaws, regularly, etc.
Why smell like gasoline when starting the engine "on the cold" or "on the hot"
Note that if the smell of gasoline is heard only some time after launch injector Engine, then not in all cases it is a malfunction. Often the smell of fuel appears after a cold start in winter, then completely disappears as the power unit warms up. If so, then you need to understand the following:
- Gets information from which "reports" that the unit is cold.
- Based on this information, the control unit enriches the mixture, and significantly, and also increases the turnover to the so-called "warm-up".
- In working on a re-engaged mixture in a cold motor cylinders, the fuel is not completely combined, its part falls into the exhaust system.
It turns out, the smell of unburned gasoline, which feels the driver comes from exhaust pipe. After a slight warm-up of the engine, the fuel will start burning more fully and the smell will disappear. Such a situation for many cars can be considered the norm.
However, in some cases it is also appropriate to talk about faults, especially on modern carswhich comply with the Euro-4 standard. The fact is that incomplete combustion of fuel can occur not only as a result of re-enrolling the mixture itself to maintain stable work DVS after a cold start, but for other reasons.
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Causes of the smell of gasoline from the exhaust pipe, when starting the engine, in the cabin
We are already accustomed to own carwhich not only can help us simplify life, significantly reducing the distance, more precisely the time spent to move from the point "A" to the point "B". But this is if the car works like a clock. However, it is worth emerging any problem and have to look for ways to solve it, often spending solid amounts only for diagnostics. However, some of the problems can be detected. The main thing is to know at least where it is worth looking for and what to look for. Let's look at the problem when suddenly begin to feel the smell of gasoline, which appears in the cabin and where it should not be at all. The problem is one of the important and requiring an urgent solution, as it can serve as a warning that more serious problems may soon appear. And most often, the smell of gasoline indicates the fuel leakage that occurred and leave everything as it is impossible. Consider the main places where the smell of gasoline may appear, where it should not be.
The main causes of the smell of gasoline in the car
There may be several reasons for this. Moreover, it will be difficult to disassemble where and how the smell of gasoline penetrates into the salon. And yet, it will not always be an alarming signal. For example, the smell of gasoline appears if the machine is overloaded, or you just refuel the tank. And if the smell appeared suddenly, it costs, at the first opportunity to inspect the car. Here are some places from which the smell of gasoline can be in the cabin:
1.Back car. IN this caseThe problem occurs if there were holes in various origins in the tank, resulting in fuel. At the same time, its evaporation through various technical openings can penetrate into the car interior. What can serve this? There may be a lot of reasons. First of all, it may be a banal wear of both the tank itself and fasteners, as a result of which he gets damage during riding on our "ideal" roads, welded seams may dispense.
2. Drill a tank. It happens that the smell of gasoline penetrates through the lid. The reason may be in the wear and destruction of a special laying or valve, which serve for the thick closure of the lid and reset, if necessary, excessive pressure in the tank when the fuel begins to expand. It is solved by replacing the cover or replacement of the gasket - as well as convenient.
3. Fuel line, including clamps and nozzles. If the tank and the lid are normal, then we start tracking the paths by which the fuel enters the engine. The whole thing is that no one has canceled wear and over time there are leaks in the hoses, weak fasteners, with the result that the fuel goes, and its smell appears in the cabin.
4. Fuel pump. As a result of a malfunction or clogging, smells of gasoline can spread and fall into the salon. Just in case, it is worthwing to know that the injection machines are equipped with a pump in the tank, while the carburetor pump is under the hood at the engine. Experts say that even if the pump starts to flow, it can also give an unpleasant smell in the cabin. The problem is solved when examining the fuel pump.
5. Fuel filter. During long operation, poor gasolineThe fuel filter is inevitably clogged, which causes an increase in pressure in the fuel line. As a result, flows occur, and with them and the unpleasant smell in the cabin. The problem is solved by replacing the fuel filter.
6. Carburetor. If your car is equipped with a carburetor, then in the case of its improper adjustment, fuel simply overflows. As a result, fuel evaporation penetrate the salon. The problem is solved by adjusting the carburetor.
7. The external causes of gasoline smells into the salon. It may be an exhaust from going ahead or towards the machine when you are standing in a traffic jam or on the traffic light. They penetrate the air intake system during the ride, and avoid it will not work.
Other reasons for penetration smell of gasoline in a car salon
Cause 1. The smell of gasoline penetrates when the engine is started
Manifests itself particularly acute in winter time. Perhaps the feeling that there was a breakthrough and fuel fueling the engine. Disappears after the engine warming up. If the smell does not disappear, then it is worth starting a more detailed inspection, starting with the previously listed places. It happens because to start a cold engine, the ignition controller creates re-entered fuel mixturethat gives such an unpleasant effect.
Another reason is if one or more engine cylinders have failed. But it will immediately become noticeable, as the capacity is significantly the deterioration of the dynamics of movement and, while. Permanent smell of gasoline under the hood and in the cabin.
Cause 2. The smell of fuel from the exhaust pipe
It may be a cold start, when there are not burnt particles of gasoline in the exhaust. If the problem does not disappear with heating and the smell continues to be felt, then it is worth checking the candles of ignition, DMRV, lambda probe, etc. If after that the problem did not solve, then the output is one hundred and diagnostics.
Cause 3. The smell and fuel itself appeared in the engine oil
Here you can call several reasons when the smell of fuel is felt from the oil refining neck. It is worth named the main of them:
incomplete combustion of gasoline;
As a result of cold engine start.
car movement without engine warming on small distances;
problem with cylinders;
Engine often works on idlingwhat happens in the city or during a long expectation;
As a consequence of wear or loose nozzles.
It is worth it that the fuel in the oil leads to loss of viscosity oil and means worsen the quality of the lubrication of the nodes and the engine units operating under load. And especially badly use a car with an immentive engine, since the heated gasoline just has time to evaporate and can no longer cause much harm.
We listed the main options, because of what the smell of gasoline may be in the car's cabin. And to avoid big problems, it is still worth visiting the service station and make full diagnosis. Perhaps in the future it will save your life, and it can prevent a large breakdown.
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We are already accustomed to your own car, which not only can help us simplify life, significantly reducing the distance, more precisely the time spent to move from the point "A" to the point "B". But this is if the car works like a clock. However, it is worth emerging any problem and have to look for ways to solve it, often spending solid amounts only for diagnostics. However, some of the problems can be detected. The main thing is to know at least where it is worth looking for and what to look for. Let's look at the problem when suddenly begin to feel the smell of gasoline, which appears in the cabin and where it should not be at all. The problem is one of the important and requiring an urgent solution, as it can serve as a warning that more serious problems may soon appear. And most often, the smell of gasoline indicates the fuel leakage that occurred and leave everything as it is impossible. Consider the main places where the smell of gasoline may appear, where it should not be.
The main causes of the smell of gasoline in the car
There may be several reasons for this. Moreover, it will be difficult to disassemble where and how the smell of gasoline penetrates into the salon. And yet, it will not always be an alarming signal. For example, the smell of gasoline appears if the machine is overloaded, or you just refuel the tank. And if the smell appeared suddenly, it costs, at the first opportunity to inspect the car. Here are some places from which the smell of gasoline can be in the cabin:
1.Back car. In this case, the problem occurs if openings of various origins were formed in the tank, resulting in fuel. At the same time, its evaporation through various technical openings can penetrate into the car interior. What can serve this? There may be a lot of reasons. First of all, it may be a banal wear of both the tank itself and fasteners, as a result of which he gets damage during riding on our "ideal" roads, welded seams may dispense.
2. Drill a tank. It happens that the smell of gasoline penetrates through the lid. The reason may be in the wear and destruction of a special laying or valve, which serve for the thick closure of the lid and reset, if necessary, excessive pressure in the tank when the fuel begins to expand. It is solved by replacing the cover or replacement of the gasket - as well as convenient.
3. Fuel line, including clamps and nozzles. If the tank and the lid are normal, then we start tracking the paths by which the fuel enters the engine. The whole thing is that no one has canceled wear and over time there are leaks in the hoses, weak fasteners, with the result that the fuel goes, and its smell appears in the cabin.
4. Fuel pump. As a result of a malfunction or clogging, smells of gasoline can spread and fall into the salon. Just in case, it is worthwing to know that the injection machines are equipped with a pump in the tank, while the carburetor pump is under the hood at the engine. Experts say that even if the pump starts to flow, it can also give an unpleasant smell in the cabin. The problem is solved when examining the fuel pump.
5. Fuel filter. During long-term operation, poor gasoline, the fuel filter is inevitably clogged, which causes an increase in pressure in the fuel line. As a result, flows occur, and with them and the unpleasant smell in the cabin. The problem is solved by replacing the fuel filter.
6. Carburetor. If your car is equipped with a carburetor, then in the case of its improper adjustment, fuel simply overflows. As a result, fuel evaporation penetrate the salon. The problem is solved by adjusting the carburetor.
7. The external causes of gasoline smells into the salon. It may be an exhaust from going ahead or towards the machine when you are standing in a traffic jam or on the traffic light. They penetrate the air intake system during the ride, and avoid it will not work.
Other reasons for penetration smell of gasoline in a car salon
Cause 1. The smell of gasoline penetrates when the engine is started
It manifests itself particularly acute in winter. Perhaps the feeling that there was a breakthrough and fuel fueling the engine. Disappears after the engine warming up. If the smell does not disappear, then it is worth starting a more detailed inspection, starting with the previously listed places. It happens because to launch a cold engine, the ignition controller creates a re-entered fuel mixture, which gives such an unpleasant effect.
Another reason is if one or more engine cylinders have failed. But it will immediately become noticeable, as the capacity is significantly the deterioration of the dynamics of movement and, while. Permanent smell of gasoline under the hood and in the cabin.
Cause 2. The smell of fuel from the exhaust pipe
It may be a cold start, when there are not burnt particles of gasoline in the exhaust. If the problem does not disappear with heating and the smell continues to be felt, then it is worth checking the candles of ignition, DMRV, lambda probe, etc. If after that the problem did not solve, then the output is one hundred and diagnostics.
Cause 3. The smell and fuel itself appeared in the engine oil
Here you can call several reasons when the smell of fuel is felt from the oil refining neck. It is worth named the main of them:
. incomplete combustion of gasoline;
. As a result of cold engine start.
. Car movement without engine warming for short distances;
. problem with cylinders;
. The engine often works at idle, which happens in the city or during a long expectation;
. As a consequence of wear or loose nozzles.
It is worth it that the fuel in the oil leads to loss of viscosity oil and means worsen the quality of the lubrication of the nodes and the engine units operating under load. And especially badly use a car with an immentive engine, since the heated gasoline just has time to evaporate and can no longer cause much harm.
We listed the main options, because of what the smell of gasoline may be in the car's cabin. And to avoid big problems, it is still worth visiting the service station and make full diagnosis. Perhaps in the future it will save your life, and it can prevent a large breakdown.
It becomes completely uncomfortable in the car, if the smell of gasoline unexpectedly appears in the cabin. As a rule, he serves as a harbinger of trouble. Most likely, a fuel leak occurred somewhere. It may happen in many places, but still it is necessary to find and eliminate the source of smell.
Smell of gasoline in the car
The reasons why the smell of gasoline may appear in the car, several. Sometimes it is difficult to determine where it is coming from. Moreover, the smell of gasoline sometimes occurs only with some specific conditions, for example, on a fully loaded machine, or when the tank is filled. But, nevertheless, several places that can serve as sources of sprouting sprouts are well known:
- Car tank. It can be prolonged, and then fuel will go through the resulting hole, and its evaporation will penetrate the salon. The reasons why this happens may be the most different, ranging from damage to the fastening of the tank, as a result of which it begins to move, and ending with the flow of welds.
- Tank cap. Sometimes the smell of gasoline comes from here. To ensure dense closure, it is supplied with a special gasket and valve, providing reset of excessive pressure when expanding fuel. If the gasket has crackled over time, or the valve is faulty, they will serve as a source of aroma.
- Fuel line, clamps and nozzles. It is over them that gasoline from the tank goes to the engine, over time they can start leaking hoses and weaken the places of their mounts. Then, through them, the fuel will go down, which will cause the penetration of evaporation into the salon.
- Gasoline pump. When he is faulty or clogged, it may well become a source of unpleasant flavors. On the injection machine, the pump is in the tank, whereas on the carburetor - outside it. And if in this case the pump at least just flows the gasket, the smell of gasoline will be provided.
- Fuel filter. It is possible that with long-term operation, it will be scored mud, the pressure in the highway will rise, which will cause the leakage, for example, clamps. In order for the unpleasant and odorless evaporations arising from this, it is enough to replace the fuel filter.
- Carburetor. With incorrect adjustment, the fuel will be blown away, and its evaporation under the hood will serve as a source of unpleasant odors.
- Hit by unpleasant flavors from the outside. Particles of unburned fuel from the counter or passing car entering the inside of the cabin through the outdoor air intake system during movement, can also serve as a source of unpleasant odor.
The smell of gasoline when starting the engine
The situation looks somewhat different when the engine is started, especially in winter. At the same time, the smell of gasoline is quite often felt, sometimes so strong that the impression is created about the rowing jet. However, if after warming the motor, it disappears, nothing to worry. 
When you start a cold engine, the ignition controller in the machine makes the mixture of re-entered. As a result, part of the fuel does not burn and is thrown out of the exhaust pipe to the street, which is why the smell of gasoline will be felt.
This can occur even because of one engine non-working cylinder, but if it is a permanent defect, it will be accompanied by other manifestations, such as power loss or deterioration of the movement dynamics.
If such a phenomenon exists only when starting and disappears when driving the engine, it is connected only with a cold start, when increasing the temperature normal work Motor must recover.
The smell of gasoline from the exhaust pipe
In this case, the situation is not so unambiguous. Of course, the smell of gasoline propagating from the exhaust pipe can also be caused by a re-entered mixture, as at the start of the cold engine, but this problem is worth viewing a little wider. The smell indicates incomplete combustion of fuel, but the reasons may be different. 
These include wires, candles, ignition coils, DMRV, lambda probe, catalyst and much more. Such a variety of reasons prevents it yourself to determine how much of the exhaust pipe is smelling fuel. Therefore, it will be best to call for diagnostics.
The smell of gasoline in engine oil
It is especially worth touching this situation when the fuel is found in oil. This may indicate the smell of gasoline from the oil refining neck. Causes can be:
- incomplete combustion of fuel;
- cold engine launches and motion on a cold motor close to close distances;
- non-working cylinders;
- frequent operation of a motor at idle (traffic mode in the city);
- hitting electromagnetic valves or nozzles;
- wear or loosely closed nozzles.
The investigation will be the dilution of oil and the loss of viscosity them, which worsens the conditions of lubrication, especially nodes subject to significant loads. Serious damage can occur in cases where the engine is often triggered cold. If the motor is well warmed, the gasoline evaporates and does not negative affect of the oil.
Many drivers are familiar to the situation when when the motor of the exhaust pipe is launched, gasoline smells like a gasoline or his smell enters the interior of the car. This should serve as a factor indicating certain malfunctions. In such cases, it is necessary to independently take the necessary measures or to drive a service station for diagnostics.
It is worth remembering that both the gasoline himself and his pairs are explosive, and it is unambiguous to joke with such things.
Such a problem concerns many motorists, for they are well aware that it is not necessary to joke with gasoline. But another trouble is added to this problem - fuel consumption increases. If such a problem is detected, then the first thing you need to do is inspect the entire body of the car from the hood and to fuel tank. Sometimes it happens that the nuts of the fuel line feeding fuel supply nuts to the carburetor. The radiator fan back to the silencer fades gasoline pairs.
After detecting the cause of the malfunction, the car must be put on the observation pit and extremely carefully trace the path of the movement of fuel from the fuel tank to the carburetor, if the engine is injector, then to the nozzles. It will be necessary on the connecting hoses of the fuel line tighten the strongest all the fittings and clamps.
Often on domestic cars for some 3-5 years of operation, the gas tank turns into a sieve. If there was no gasoline leakage during the inspection, then you need to try to study this problem as much as possible.
Possible engine problems
The smell of gasoline comes from the muffler and is not very comfortable to ride the car? Then, the first thing to be done, unscrew the candles and try to understand in which of the cylinders fuel does not burn and goes on along the exhaust collector. Gasoline leak place will show a wet or squealing spark plug.
Not rarely burns the chamfer of one of exhaust valves In the combustion chamber. It is from there that the fuel-air mixture goes into the exhaust pipe. The penetration of gasoline mixture can be eliminated by an experienced auto mechanic.
It will be necessary to change the rings on the pistons, the valve, and sometimes the pistons themselves. So, we can assume that the average repair of the power unit is secured by the car owner. However, it is not necessary to hurry with repair, first it is better to diagnose the engine, for it is not always and not so hopeless.
Poor sitting cap on the spark plug or high voltage wire, can make the candle working with interruptions. This can allow fuel to freely enter the exhaust manifold. No need to scare if some kind of liquid suddenly flies out of the muffler, because it is not fuel, but the condensate formed when the motor is started on the walls of the muffler. It certainly can exude a smell of gasoline, but do not worry, it is not gasoline.
Problems of the modern engine
If you drive on a modern injection car, and from the "Glushak" "rushing" as in the old "Volzhana", it can be concluded that it is reobed by fuel. The reason may be the incorrect operation of the lambda probe. On the injection car there is a valve that adjusts the reset of unburned fuel back to the benzobac. In its breakdown, gasoline will be very re-maintained. A similar problem can create a failed air mixture sensor. The auto electrician will be able to "figure out" with such a malfunction.
What to do if gasoline smells from the muffler?
First of all, it is not necessary to panic, because it can be easily explained. The task of the collector placed in the exhaust pipe, clean and survive the fuel pair, which remained in the exhaust gases. In the meantime, the catalyst will not warm up to 250 degrees, he will not clean anything, because its operating temperature is 600-800 degrees. Therefore, it is recommended immediately as soon as the car started to go. This will allow the catalyst to warm up faster.
