Why does the interior of a Chevrolet Niva smell like gasoline: repairs

On fuel-injected cars there is a valve that regulates the discharge of unburned fuel back into the gas tank. I didn’t apply for warranty, I was afraid that my valuables would be unscrewed.

But that's not all the ordeal. This can allow fuel to flow freely into the exhaust manifold. Also on injection machines there is a valve that regulates the discharge of unused gasoline back into the gas tank.

He took it off, gave it a charge, but I ak. When the snow melted 2 weeks.

According to the instructions, which I downloaded either here or from the website of the Podolsk plant. But this is not all the ordeal. There was a strong smell of gasoline in the cabin. The radiator fan blows gasoline vapors back to the muffler.

Why does the exhaust pipe smell of gasoline and how to solve this problem?

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 some years of operation, the gas tank turns into a sieve. If during inspection no leaks were found, the Chevrolet Niva exhaust smells of gasoline, then you should try to study this problem in as much detail as possible.

Possible engine problems Does the muffler smell of gasoline and is it not very comfortable to drive the car?

Along this line, gasoline is both supplied to the internal combustion engine and its excess is returned back to the return tank. The hoses may begin to leak, and the reliability of their Chevrolet Niva deteriorates; the exhaust smells of gasoline. It is quite obvious that in this case a leak also occurs, and gasoline fumes will annoy the driver with the smell of fuel in the cabin.

The next element to check is the fuel pump. On cars with a carburetor, the fuel pump is often located under the hood or outside the tank.

Niva - Club / Niva - Club

In mine, the upper fitting along the lower contour was not welded. The right photo shows that its welding disk even shines - it did not melt during welding. Although there is a weld on the top of the vessel. The third most common reason is that there is a smell of gasoline in the interior of the Chevrolet Niva, why are there thin separator hoses. There have been cases where these nipples simply broke off - then they can be repaired by “cold welding”.

But more often the smell occurs as usual due to poorly tightened clamps.

To access the nipples, you need to remove the plate covering the gas tank, also see. On carburetor cars, these thin hoses can be pinched because they are passed between the front wall of the gas tank and the partition on the bottom of the body. You need to loosen the screws securing the front of the gas tank and straighten the thin hoses. There have been cases of odor appearing due to the fact that the gas tank cap, resting its edges against the rubber frame of the neck, did not tightly close the neck hole.

The following treatment method is recommended: The gas tank plug will take the correct position and close the neck with its rubber insert.

The rarest case is perforation of the gas tank. I remember only two such messages in the conference.

One time the cause was a defective weld. It can simply be sealed with “cold welding”. In another case reported, there were multiple holes, apparently caused by corrosion.

Of course, such a tank simply needs to be changed: The author of the message repaired the tank by irradiating the defective area and filling it with a layer of solder. Individual “bursts” of the smell of gasoline, felt when there is a smell of gasoline in the interior of a Chevrolet Niva why car, on my first Nivka were a sign of a leaky gasket under the electromagnetic valve of the EPH system. If at the same time there were problems with idling, there was a smell of gasoline in the interior of the Chevrolet Niva, why, without even opening the hood, I knew that again it was time to change this gasket in the Solex, “restored” at MOSKARZ, this establishment would not be remembered by night!

In long Niva, a specific reason for the appearance of the smell was described in the conference. Due to the fact that the gas tank filler flap is located at the very edge of the right rear door, gasoline vapors were drawn into the cabin through the worn door seal.

This will most likely need to be treated by replacing the seal. Addition from Two more rare cases are described in the forum. There is another reason for the smell of gasoline in the cabin. The carburetor return hose from the carburetor was leaky, and it dripped sporadically, and the stench apparently was drawn in through leaks in the ventilation.

I discovered it by accident - while adjusting the valves. Snickers original: The smell of gasoline was terrible in the cabin. The hole is sealed. The smell has been eliminated.

The smell appeared only when the tank was half empty: After a long search, a strong leak was discovered along the fuel pump studs - up to bubbles when the car was rocked.

The dark spot around the fuel pump in the right photo is spilled gasoline: For repairs, you need a sealant specifically designed for repairing gasoline pipelines and does not contain silicone. Silicone is dangerous for injection cars - it damages the lambda probe.

A suitable sealant was purchased for RUR. The consistency of the sealant resembles transmission oil. The application brush is attached to the lid, which is very convenient.

The rear part of the cabin needs to be disassembled, as described in the articles Adjusting the VAZ fuel level gauge or Modifying the drainage of the VAZ gas tank If the tank is full, drain liters of gasoline from the tank in advance: You need to remove the plate covering the gas tank through the hatch in the gas tank plate, do not remove the connector, unscrew the 8 nuts key 7, be sure to uncouple the fuel pump hoses with two keys 17 and remove the fuel pump: You need to apply a sealant to the surface of the gas tank at the place where the fuel pump is installed, especially in places where it smells like gasoline in the interior of a Chevrolet Niva, why the studs and the studs themselves, then the gasket on both sides and the bottom surface of the fuel pump: Install the fuel pump into place, tighten the nuts “crosswise” in two steps:

Get rid of the smell of gasoline in the field

Summer has come and there is a smell of gasoline in the cabin, a persistent smell, my head starts to hurt. I went to the gas tank, checked all the clamps, everything was tight. Where else could there be a reason?

VAZ 21214. At the beginning of summer I again began to fight the smell of gasoline in the cabin. What I found: 1. Gasoline was leaking from under the gas pump rubber. I tightened the elastic last summer, it didn’t help. Covered it with sealant.

3. Gasoline was oozing from under the gas tank ventilation tubes at the places where they were attached to the gas tank and separator fittings. Clamps g@$but! I had to replace the tubes with blue ones with a thick wall and, accordingly, clamps. Did not help. I put it on the sealant, now it's OK.

5. Unscrew the valve adjustment screw 21214-1164080 almost completely. So that you can blow out this valve with your lips.

Now it only smells sometimes, after parking the car, and it doesn’t bother me, because after I start driving, the smell immediately disappears. However, the pressure in the used tank is still high or low

, you can tell, when you open the lid of the used tank, a strong hiss is heard, which is probably why it smells. Probably this damn valve is sticking and it is not releasing pressure. The next time I need to remove the seat, I’ll replace it with 2108-1156010. And instead of a valve there will be a hole.

5. Unscrew the valve adjustment screw 21214-1164080 almost completely. So that you can blow out this valve with your lips.

Source

The main reasons for the smell of gasoline in the cabin

Let's look at the main reasons for the smell of gasoline.

Clamps

Experts and owners of such vehicles note that the most common reason for the smell of gasoline in the interior of a Chevrolet Niva is poorly clamped clamps on the tank neck. It can sometimes be difficult to tighten them tightly, since standard products that are installed at the factory are not reliable .

Replacing clamps on fuel hoses

This problem can be eliminated if you replace the clamps with better and stiffer ones.

Separator or fitting

Inspection of fittings and separator

The second reason for the smell of fuel in the cabin is damage to the gas tank separator or wear of the fittings themselves . In this case, these parts will have to be replaced completely, which is not cheap. You can also check the separator hoses first.

Fuel tank cap gasket

There are times when the tank lid cannot be closed tightly because the gasket on it is damaged.

It also happens that it will not be possible to close the tank lid tightly with all the effort applied due to the fact that it rests against the neck frame. In this case, you should loosen the rigidity of the clamps on the neck. As a result, screw the cover back so that it takes its correct position, and then tighten the clamps again. It will be possible to determine the incorrect position of the lid if the smell appears only when the tank is full.

Damage to the gas tank

Inspect the gas tank for damage and traces of gasoline leaks

Mechanical damage to the tank can also lead to the smell of gasoline in the car interior.

This can also happen due to corrosion. This problem occurs in older cars. This will require either repair of the tank itself or its complete replacement.

Fuel pump gasket

Inspecting the fuel pump gasket

Valve gasket

In some cases, the smell of gasoline in the cabin may appear due to damage to the gasket on the solenoid valve in the engine compartment of the car . In this case, malfunctions in the operation of the engine at idle will be observed. In this case, you need to replace the gasket.

Return

During the inspection of the return

Some owners note that the smell of fuel may appear in the cabin due to damage or leakage of the return line to the carburetor. The hose itself should be inspected for damage, as well as the tightness of its connections at both ends.

Lada 4×4 3D OPTIMUS › Logbook › Eliminating the smell of gasoline in the NIVA’s cabin…

During the May holidays, I decided to tackle a problem that I already had to solve two years ago - the smell of gasoline in the cabin. Then the cause was a broken fitting on the adsorber tank. Now I also sinned on it, I even tried to buy a new one, metal, but it was not available...maybe it was better, because it turned out not to be the problem... First, I disassembled the interior - removed the rear seats, the side trim and the gas tank panel...

The initial inspection did not reveal the problem; the gas tank separator fittings were without visible damage

I forcibly changed the neck hose with clamps last time and now the inspection showed that everything is normal.

The fuel hose and return line have also been changed - there is no smell.

The gasket under the fuel inlet with the sensor is also normal.

The system of drainage tubes also did not cause any visible complaints...

We decide to shake the NIVU along the Oka roads, along the way we sniff and inspect places of possible gasoline leaks...

And then a gasoline leak appeared...

There is a crack in the drain fitting of the gas tank, which is why the smell appeared after refueling, when the tank was full...

It was decided to seal the crack using two-component metal plastic...

The surface was cleaned before applying the sealant.

The repair compound was spread tightly around the fitting

After drying, check... we fill up to capacity and test until we are completely confident in the success of the event...

The question, of course, remains about the reasons for the appearance of such a crack in the fitting; one of the possible options is that when transporting passengers in the back seat, a thin panel above the gas tank bends and reaches the fitting, breaking it...

Causes of the smell of gasoline in the car interior

List of reasons for the appearance of a gasoline smell inside a car:

the sealing rubber of the gas tank cap came off or broke, or maybe they completely forgot to close the tank (this sometimes happens at gas stations, even my brother once forgot to take the pistole out of the tank and drove off like that);
It often happens that at the junction of the tank and the neck, the weld deteriorates, and gasoline vapors begin to escape from there;
leakage from the joints of the fuel line pipes;
Exhaust gases enter the cabin when the windows are open, due to leaky door seals and a clogged cabin filter;
the sealing elements of the fuel pump do not hold and leak;
The fuel level sensor in the tank is not hermetically installed;
the submersible fuel pump module is not sealed;
when transporting fuel in canisters, for example, a leaky canister fell in the trunk or transportation was carried out on the floor in the cabin.

In which cars is the smell of gasoline most common in the car interior?

Drivers of classic VAZ cars (that is, rear-wheel drive, VAZ 2101-2107) and front-wheel drive VAZ 2110, 11, 12, 13, 14 models often encounter problems such as the smell of gasoline in the cabin.

Drivers of inexpensive foreign cars such as Deawoo Nexia, Ford Focus, Deawoo Lanos, Chevrolet Niva, vintage Toyota, Opel and Renault models .

Fuel level sensor

One of the common causes is a leaky fuel sensor. Leaky joints of connecting elements create fuel leakage. Basically, the problem with the fuel sensor occurs in VAZs with front-wheel drive (VAZ 2108-2115 and new models).

Why in these cars, because the sensor in these cars is mounted in a place under the rear seat. To check, you need to raise the seat, open the hatch in the bottom and check the connections.

For prevention or if gasoline vapors continue to enter the cabin, laundry soap is a good remedy. You need to cover up the joints with soaked laundry soap; even if there are microcracks, the soap will close them.

Crack between the gas tank and its neck

Gas tanks are not cast, so it is made from several elements welded to each other. The cause of a leak in the gas tank may be the welded connection between the neck and the tank.

Chevrolet Niva Shniva › Logbook › The smell of gasoline in the cabin

A persistent smell of gasoline appeared in the cabin.
At first the smell was not strong and not always. I attributed this to fuel splashing through the filler plug, just like on a regular Niva. But no, the neck and wing outside were dry. Which means the reason is somewhere in the cabin.

I was thinking about the fuel pump module or the connection between the neck and the tank.

As time passed, the smell became sharper and stronger. It got to the point where it stopped weathering.

In addition, it got warmer outside to +16 +20 and it became simply unbearable to be in the cabin.

I emptied the trunk into the garage. I removed the seat backs and soundproofing mat, unscrewed the gas tank flap, and removed the cross member securing the tank. And most importantly, it was necessary to remove the wing trim, the one in the trunk, it is large and shapeless.

There were traces of gasoline on the tank flange under the neck.

I drove like this all day and this trail periodically turned into a puddle.

It was interesting that the joint between the neck and the tank was coated with sealant. Apparently the previous owner already encountered the problem.

I thought for a long time about how to fix it, whether to cover it with sealant, or try to tin it with solder, or even remove it and weld it.

But first, it was necessary to find the crack along its entire length, and for this it was necessary to clean the entire joint.

I did this with fine sandpaper and it turned out very well.

A crack appeared and began to sweat, while the tank was almost empty, and if you tumble into a left turn, the puddle appears again.

The sealant chosen was Victor reinz, the price per tube was 550 rubles, it used to be expensive, but now every multi-colored Abro costs almost the same...

After removing dirt from the surface and degreasing, I applied sealant and let it dry a little.

After the repair, I drove 400 kilometers and managed to refuel a couple of times. Nothing will happen, no sweating and no smell.

Source

Main reasons

In no case can we say that the interior of only certain cars stinks of gasoline, such as Lanos, Lada Priora, VAZ, Hyundai Accent or Chevrolet Niva.

This problem is typical for all types of vehicles, regardless of make, model, year of manufacture and other factors.

It is unlikely that anyone will be happy with the fact that when you start the engine or just get into the cabin, a characteristic smell of fuel is heard inside.

This usually happens due to:

gas tank leaks;
leakage of tightness;
problems in the output system;
faults in the fuel line;
spills, etc.

Now we will separately consider common situations that can cause the cabin to stink. And also ways to solve them.

Spilled gasoline

The most banal and quite common situation. A motorist, having bought a 20-liter gasoline can, filled it with fuel and put it in the trunk.

Either the lid was not screwed on, or the container itself was faulty or defective, which is why fuel gradually began to spill out of it. As a result, fumes and odors penetrated into the cabin.

There is no need to invent anything special here. Just remove the source of the leak from the car, clean up the spilled fuel, and that's it.

Traffic fumes

If the smell appeared when a window or door was open and the car was started, there is a possibility that the smell is caused by exhaust gas aromas entering the cabin.

In general, the very fact that the exhaust smells of gasoline is not very pleasant. This indicates incomplete combustion of the fuel. And here the reason may lie in an incorrectly configured carburetor, problems with the injector control unit, oxygen sensor and many other components.

Therefore, a comprehensive diagnosis will be required here. Only if you are not sure exactly why the fuel does not burn completely, and this manifests itself in the form of a characteristic smell of gasoline from the exhaust pipe.

The smell of exhaust gases and burning in the cabin

When the car is not completely new, and especially domestically produced, it happens that the smell of exhaust gases begins to be felt in the cabin. As a rule, this happens when the engine begins to eat up oil, and it is the product of its breakdown that gives this effect.

Oil scraper rings and caps no longer hold oil, a lot of friction and overheating arise between the bearings and fingers, which can burn the oil, and the oil pressure drops.

Definitely requires diagnostics of the exhaust system and the engine itself. You can figure it out on your own, but most likely it will not give a long-term effect. It is still safer to turn to professionals.

How to identify and handle them

Do you smell gas in your car when you're driving? There are many reasons why your car smells like gasoline, and some of them are minor. However, in some cases, this smell can be caused by a serious problem that requires car repairs.

Let's look at both minor and major problems that can cause your car's interior to smell like gasoline.

Minor problems

Refueling. If you notice a gas odor immediately after refueling, vapors may have entered the cabin during refueling. If the refueling is the cause, the smell should go away after a few minutes.
Loose gas cap. A loose gas cap can cause smoke to spread throughout the cabin of your vehicle. Tightening the gas cap should solve the problem. If the cover does not close, it may need to be replaced.
Gas on hands or clothes. If gasoline accidentally gets on your hands or clothes while refueling, the smell will remain in the cabin. The smell should disappear after you wash your hands or get into the car in fresh clothes.

Gas tank: drainage, displacement, smell in the cabin, splash, etc.+

Post by bormiero » 05 Apr 2010, 01:01

Tell me, good people, is it really necessary to have so many different tubes and tubes on a gas tank? And is it possible to throw them all out, leaving the actual neck and one thinner one.

Air lock in tank

Post by bregovich » Mar 17, 2011, 07:16 pm

Good afternoon When refueling there is a constant problem - the gas is bubbling and overflowing. It returns gasoline even through the air duct, where in theory only air should return. As a result, in order to fill the tank full, you have to strain it for a little bit for 5-10 minutes. Sometimes it doesn’t matter, but it just infuriates me. I took off the side panel and looked. a bunch of tubes that I still haven’t decided to pull. Can you tell me where to start the diagnosis?

KROKONIVETS: First you need to check whether the rubber pipe between the tank and the filler neck is kinked, then check the air vent tube that goes from the tank to the neck (only a thin one)

Smell of gasoline in the cabin

Post by Schet » April 27, 2011, 09:18

GAR: And one of my tank ventilation tubes was crushed, and when it “straightened out” everything became a bunch.

Smell of gasoline in the cabin

Post by troy26 » Oct 16, 2011 10:10 pm

21214 with central injection. The smell appears after stopping the engine and when driving over bumps. What could it be. Tell.

Re: Gas tank: drainage, displacement, smell in the cabin, splash, etc.

Post by RODGER-AL » 20 Oct 2011, 13:56