The smell of gasoline from the exhaust pipe when cold, reasons

This problem worries many motorists, because they are well aware that gasoline is not something to joke about. But another nuisance is added to this problem - fuel consumption increases. If such a problem is discovered, then the first thing to do is inspect the entire car body from the hood to the fuel tank. Sometimes it happens that the nut of the fitting connecting the fuel line to the carburetor becomes loose. The radiator fan blows gasoline vapors back to the muffler. After discovering the cause of the malfunction, the car must be placed in an inspection hole and very carefully trace the path of the fuel from the fuel tank to the carburetor, and if the engine is fuel-injected, then to the injectors. It will be necessary to tighten all the fittings and clamps on the connecting hoses of the fuel line. Often on domestic cars, after just 3-5 years of operation, the gas tank turns into a sieve. If during inspection no gasoline leaks were detected, then you should try to study this problem in as much detail as possible.

REASONS FOR THE APPEARANCE OF THE SMELL OF GASOLINE FROM THE EXHAUST PIPE WHEN STARTING THE ENGINE IN THE PASSENGER

It becomes completely uncomfortable in the car if the smell of gasoline suddenly appears in the cabin. As a rule, it serves as a harbinger of trouble. Most likely there was a fuel leak somewhere. This can happen in many places, but it is still necessary to find and eliminate the source of the smell. Gasoline smell in the cabin

THE SMELL OF PETROL IN THE CAR

There are several reasons why the smell of gasoline may appear in the car interior. Sometimes it can be difficult to determine where it comes from. Moreover, the smell of gasoline sometimes occurs only under certain conditions, for example, on a fully loaded car, or when the tank is filled. But, nevertheless, several places are generally known that can serve as sources of fuel aromas:

• Car tank. It may become leaky, and then fuel will begin to escape through the hole formed, and its fumes will penetrate into the cabin. The reasons why this happens can be very different, ranging from damage to the tank mounting, as a result of which it begins to move, and ending with leakage of welds.
• Tank cap. Sometimes the smell of gasoline comes from here. To ensure tight closure, it is equipped with a special gasket and a valve that relieves excess pressure when the fuel expands. If the gasket cracks over time, or the valve is faulty, then they will serve as a source of aroma.
• Fuel line, clamps and pipes. It is through them that gasoline flows from the tank to the engine; over time, hoses can begin to leak and their attachment points can become loose. Then fuel will begin to escape through them, which will cause fumes to penetrate into the cabin.
• Gasoline pump. When it is faulty or clogged, it may well become a source of unpleasant odors. On an injection machine, the pump is located in the tank, while on a carburetor machine it is outside it. And if in this case the pump even just has a gasket leaking, then the smell of gasoline will be guaranteed.
• Fuel filter. It is quite possible that during prolonged use it will become clogged with dirt, the pressure in the line will rise, which will cause leakage, for example, of clamps. To ensure that the resulting unpleasant and odorous fumes disappear, it is enough to replace the fuel filter.
• Carburetor. If the adjustment is incorrect, the fuel will overflow, and its fumes under the hood will serve as a source of unpleasant odors.
• Ingress of unpleasant odors from outside. Particles of unburned fuel from an oncoming or passing car, entering the cabin through the outside air intake system while driving, can also serve as a source of unpleasant odor.

Exhaust smells like gasoline

Hello everybody! I began to notice that when it warmed up, the exhaust stank of gasoline, but as soon as it warmed up, there seemed to be no smell at all. What's the matter, who knows?

• That’s how it should be, it’s a CAR, it certainly won’t smell like mimosas.

• Yes, he apparently doesn’t mean that it’s impossible to stand next to a car in the morning to such an extent that it smells of gasoline, but after driving everything is fine. I have the same garbage when it comes time to change the oil, but after the change everything is fine. Try changing the gas station and gasoline, I don’t know how true it is, but a neighbor says that after 92 to 98, when he switched, it helped. I was also advised to change the spark plugs from iridium to 2-pin.

  Toyota Carina AT191 Acura MDX YD1

• change the gas, it happens, I once smelled worse than in a public toilet, mine was in shock

  I want to go on vacation for 2014! There is cognac, money for tickets too! ...Conscience does not allow(

• Guys, you don’t need to sniff gasoline, this causes glitches.....)))
  On the topic: unscrew the spark plugs, look at them.

  TLC Prado 150 TX-L
  It’s stupid to look for a black cat in a dark room, especially if it’s not there. But it’s even stupider to look for a black snake in a dark room. Especially if she is there.

• Have you looked? And now turn back and don’t bother touching them))) After all, we don’t live in Japan with their gasoline with the number of actanes above 100.

  Toyota Carina AT191 Acura MDX YD1

• Gasoline in Russia is not sweet sugar! Ok said_)))

  An autopsy will show who was right!
  Toyota Corona Premio 2001 4A White

• Posted by
  Pilot38

  change the gas, it happens, I once smelled worse than in a public toilet, mine was in shock

  There was the same garbage when I filled up with Omsk gasoline, like with winter additives......well, I also filled the tank full then.....for 4 days anyone who got into my car went crazy)))))))) )))))))))) And the first question was: “Why did you fill it with 80?”

  Read also:  What to do if the starline car alarm does not respond to the key fob

  Honda C-RV III, 2.4 i-VTEC, EXECUTIVE, automatic transmission, 2008,

• This happened to me when the lambda died, even if I revved it up to 5 thousand, there was black smoke. A friend of mine also felt almost no smell of gasoline in the exhaust after changing the lambda. Before the replacement it smelled like a Lada...

• And you didn’t particularly change the oil before accelerating. One person had a Skye in a 33 body with an Erbeg 20 engine. She didn’t know that the oil needed to be changed and when she pressed the gas, the soot came out worse than with diesel.

  Toyota Carina AT191 Acura MDX YD1

• Posted by
  naspiritys

  She didn't know that the oil needed to be changed.

  It happens???

  Karibas, AE-111, FF. Kalda, 241, 1ZZ, 03

• I had this happen because of gasoline - they brought it in one winter. It even stank of it in the cabin.

  Caldina ET196`95 5E
  In general, if the double solid line is on the right, this is a bad omen... (from the forums)

• Message from
  Slava4ever

  This happened to me when the lambda died, even if I revved it up to 5 thousand, there was black smoke. A friend of mine also felt almost no smell of gasoline in the exhaust after changing the lambda. Before the replacement it smelled like a Lada...

  I have similar symptoms with a dead lambda, a new one has already been purchased and is waiting for its turn to be replaced.

  SKODA YETI 2013 1.4 DSG TOYOTA PASSO 2005 1.3L TOYOTA CARINA 1999 4WD

• Posted by
  naspiritys

  And you didn’t particularly change the oil before accelerating. One person had a Skye in a 33 body with an Erbeg 20 engine. She didn’t know that the oil needed to be changed and when she pressed the gas, the soot came out worse than with diesel.

  Read also:  Operation and design of the engine crank mechanism

  If the oil burned there would be blue smoke. Black smoke from overfilling gasoline.

• Posted by
  Caribko

  It happens???

  This also happens. And it happens, like in the joke, they forget to refuel. When they changed the automatic machine, they brought a woman in tow, they thought there was something terrible there, and when they began to inspect her globally, everyone went into terrible hysterics. And the next day they brought her in with the same problem, only she with claims that they didn’t do anything, they looked and there was no gasoline again))))

  Toyota Carina AT191 Acura MDX YD1

Current time: 22:44. Time zone GMT +3.

THE SMELL OF PETROL WHEN STARTING THE ENGINE

The situation looks slightly different when starting the engine, especially in winter. At the same time, quite often the smell of gasoline is felt, sometimes so strong that one gets the impression of fuel flowing in a stream. However, if it disappears after the engine warms up, there is nothing to worry about.

When starting a cold engine, the ignition controller in the car makes the mixture over-rich. As a result, some of the fuel does not burn and is thrown out of the exhaust pipe into the street, which is why the smell of gasoline will be felt.

This can happen even due to one inoperative engine cylinder, but if this is a permanent defect, then it will be accompanied by other manifestations, such as loss of power or deterioration in driving dynamics.

If such a phenomenon exists only during startup and disappears when the engine warms up, then it is associated only with a cold start; when the temperature rises, normal operation of the engine should be restored.

Main reasons for increased fuel consumption

When the economic situation gets worse, there is a need to reduce costs at least a little. This applies to all areas of life: car operation does not remain aside. Fuel consumption deserves special attention, because the less often you have to visit a gas station, the more money you can save in your wallet.

There are many reasons for increased consumption. Some indicate a change in operating conditions, others indicate an impending breakdown of the car. Therefore, at the first signs of exceeding the norm, it is necessary to look for the cause and take measures to eliminate the problem.

THE SMELL OF GASOLINE FROM THE EXHAUST PIPE

In this case, the situation is not so clear-cut. Of course, the smell of gasoline spreading from the exhaust pipe can also be caused by an over-rich mixture, as when starting a cold engine, but this problem should be considered a little more broadly. The smell indicates incomplete combustion of fuel, but the reasons may be different.

These include wires, spark plugs, ignition coils, mass flow sensor, lambda probe, catalyst and much more. Such a variety of reasons makes it difficult to independently determine why the smell of fuel is coming from the exhaust pipe. Therefore, it would be best to stop by for diagnostics.

Problems of a modern engine

If you drive a modern fuel-injected car, and the Glushak “rushes” like an old Volzhana, we can conclude that the fuel is being over-enriched. The cause may be improper operation of the lambda probe. On fuel-injected cars there is a valve that regulates the discharge of unburned fuel back into the gas tank. If it breaks down, the gasoline will be very rich. A failed air mixture sensor can create a similar problem. An auto electrician will be able to “deal” with such a malfunction very quickly.

THE SMELL OF GASOLINE IN ENGINE OIL

It is especially worth mentioning the situation when fuel is found in the oil. This may be indicated by the smell of gasoline from the oil filler neck. The reasons may be:

1. incomplete combustion of fuel;
2. cold engine starts and driving on a cold engine over short distances;
3. inoperative cylinders;
4. frequent idling of the engine (city driving mode);
5. entry through solenoid valves or injectors;
6. worn or loose injectors.

The consequence of this will be dilution of the oil and loss of viscosity, which worsens lubrication conditions, especially for components subject to significant loads. Serious damage can occur when the engine is frequently started cold. If the engine is well warmed up, the gasoline evaporates and does not have a negative effect on the oil.

Many drivers are familiar with the situation when, when starting the engine, the exhaust pipe smells of gasoline or its smell enters the car interior. This should serve as an indicator of certain problems. In such cases, you must take the necessary measures yourself or go to a service station for diagnostics.

It is worth remembering that both gasoline itself and its vapors are explosive, and you should definitely not joke with such things.

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Prices

1. Detailed computer diagnostics on complex technical equipment – ​​free of charge
2. Consultations from experienced specialists are free.
3. Silencers – from 5000 rubles
4. Muffler corrugation – from 500 rubles
5. Sports catalyst – from 11,500 rubles
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If you have any problem with the unpleasant smell of car exhaust gases, then in our specialized car service “Leha Exhaust”, located at the address: Moscow, Sokolnichesky Val 1, building 1. specialists will perform for you detailed computer diagnostics of the car exhaust system and They will help you understand what is the cause of the unpleasant smell of exhaust gases, and will also be able to best guide you on your budget.

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Also, you can read Buy a sports catalyst in the Meshchansky district of Moscow

Is it possible to reduce the amount of liquid in the exhaust? Leak in tank

• The power supply system with a carburetor requires a separate check of this fuel supply system to the engine. Often, the carburetor requires adjustment, and its incorrect adjustment or malfunction of the device leads to gasoline overflowing.

Catalyst malfunctions © Leak in the gas tank

• increased gasoline consumption;
• reduction in engine power indicators;
• transformation of oil shade and smell;
• the occurrence of an unusual sound in the piston space;
• cooler volume.

The exhaust pipe smells like gasoline: reasons • This is very dangerous because it can cause a fire and even an explosion of the car.

Technical reasons

Most often, the most intense penetration of fuel into the oil occurs on a cold engine, since after warming up the fuel evaporates better and flows less intensively into the crankcase. That is, to get rid of the remaining odor that is probably present there, since gasoline vapors are very volatile and easily eat into a variety of materials, especially fabric materials, making themselves felt for a long time.

Consequences. Leak in gas tank

In any case, if such signs are detected, you should go straight to the service station, where a complete diagnosis of all systems of your car will be performed. In any case, the problem needs to be solved as soon as possible, since operating the engine with a gasoline-oil mixture in the lubrication system is highly not recommended.