When it gets very hot outside, it starts to smell distinctly like gasoline. Tell me what should I look at first? Adsorber? Injectors? Or something else? There is no leak anywhere.
Comments 13
Look at the fuel pipes, on the rear right side member they bend and there is a protection hanging there, sometimes there is a crack there, I had dirt there and it didn’t drip, but there was a smell, I cut out a piece and connected it with a Zhiguli fuel hose and forgot.
Most likely it’s just siphoning from the gas tank breather, which is next to the hatch. The temperature rises, gasoline vapors expand, and that’s where the smell comes from.
and how to fix it? Others have no smell
I have a smell)) I don’t understand where it’s coming from... you’re driving, you stop. And immediately there’s a smell of gasoline coming from the stove nozzles... I opened the hood, smelled it everywhere, there’s no smell. I don’t know what it is
That's about the same for me =)
In general, I found by chance where the smell came from, the hose that goes from the tank to the adsorber... in front of the adsorber itself. on which the two-way valve hangs, right in front of it there is a small section with a rag piece of hose... this rag section has rubbed against the throttle cable jacket! he stinks of bastard) ok so)
Statistics say that every fifth owner of a Niva Chevrolet faces such a problem as the smell of gasoline in the cabin. This is especially felt when the tank is fully filled. Many people do not know what to do in such a situation, since fuel leakage may not be observed anywhere.
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.
Solving the vibration problem
Details Category: Transmission modernization Created 08/12/2008 05:41
Igor GUBAR Photo: Igor GUBAR, Alexander STRAKHOV-BARANOV
The number one problem that Chevrolet Niva owners face is vibration. Sometimes it manifests itself as an indistinct hum, often as real shaking, but it is almost always present in one form or another.
Even a brief analysis of the situation with vibration on the Lada 4×4 (now that’s the name of the old Niva) and Chevrolet Niva forces us to make a disappointing diagnosis - poor production standards are to blame for the problem. You can, of course, blame the design features: a transfer case separate from the gearbox, a large angle of operation of the rear propeller shaft, a short intermediate shaft, as in the case of the VAZ-2121, etc. But practice shows that vibration often cannot be eliminated on one hundred percent, even after working on a whole range of possible causes. Sometimes it is impossible to find this very reason at all. In addition, there are other SUVs with “separate” transfer cases - Suzuki Samurai, MB Gelandewagen. There are cars, but there are no problems with increased vibration... However, this is little consolation for those who want to drive a Niva without wincing or seeing blurry silhouettes in the rearview mirror. We decided to start the fight against vibration on our Chevrolet Niva with the obvious: by replacing the driveshafts, the runout of which, especially the rear one, was visible to the naked eye.
Sleight of hand
As a worthy alternative, shafts with CV joints were chosen instead of crosspieces, which are produced by Togliatti and sold in Moscow. They are not too expensive - retail is about five thousand rubles. At one time they had problems with torn anthers, which this summer the manufacturer replaced with more durable ones. It is precisely this new type of shaft that we will install today on our Chevrolet Niva, which from birth suffers from terrible shaking in the range of 50–70 km/h. Let's mark the old shaft just in case and remove it by unscrewing the eight nuts. We won’t throw it away; we’ll take it to the plant that balances the shafts and look at the experts’ conclusions.
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:
Carry out a major overhaul of the unit
The latest and most effective method only applies to old transfer cases. But there are also shortcomings in the units of new cars. All of them can be eliminated by careful troubleshooting and fine-tuning of the unit.
The car must be inspected in the pit. Check the play in the shafts and, if necessary, modify or replace. Unfortunately, the assembly of this car is fraught with many errors that may emerge immediately or a little later.
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.
conclusions
Not all drying methods are equally good. Many work poorly or not in all cases.
The most effective method is to completely remove the sound insulation and carpet. Then turn on forced heating or leave it in the sun, weather permitting. After this, check the body for rust and coat it with Movil or Pussal. And lay construction polyethylene foam on top with a thickness of at least 10 mm.
Life hack from Domovushkin: it is better to cut the carpet under the front seats so that it can be folded back and the bottom inspected for moisture.
After drying the car interior under the mats, try to do everything to prevent moisture from getting inside again. Otherwise, your efforts will be in vain.
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 BlackHunter Logbook vibration resonance at 80 mph
So, let's talk about vibration in a shriv with cross driveshafts.
Given: vibration when accelerating at 20-40-60-80 km/h. Vibration only appears under load - either in floor-to-ceiling mode, or when the trunk and interior are fully loaded. At 80 km/h there is almost always vibration. At higher speeds there is silence.
Another feature is the complete absence of vibration on a cold car, that is, for the first 5-10 km there is no vibration. Then it gradually appears. Hence the conclusion - something is heating up: rubber bands in the rods, a donut, gearbox cushions or manual transmission...
Moreover, what is remarkable is that you press on the gas, a vibration appears, you release the gas a little and press again - the vibration disappears. Without load and in neutral, there is no vibration in the manual transmission.
1. To begin with, I replaced the jet rods with stock ones - the vibration almost disappeared, but gradually appeared again.
2. I removed the rear driveshaft - there is absolutely no vibration.
3. I buy and install two new Belkard universal joints. The vibration has decreased, but still appears in resonance.
4. Replaced the RPM and RZM with new ones - nothing has changed.
5. I adjusted and centered the position of the manual transmission, lowered the manual transmission by 2 mm - the vibration decreased further, but it appeared again in resonance.
6. Swap the cardan shafts - no changes.
7. I bought and installed adjustable reaction rods on silent arms 2108, lengthened the lower rods by about 5 mm - there is almost no vibration, but after running 10-20 km in the city or 50 kilometers on the highway it appears at 20 km/h in the floor-to-ceiling mode and at 80 km/h, the more the trunk is loaded, the rougher the vibration.
8. I replaced the tired gearbox support - no changes.
Basically, all that remains is to replace the transfer case cushions and the blower shaft, as I feel that the reason is somewhere there. Plus lengthen the lower links a little more so that the REM and manual transmission flanges lie in the same plane.
It seems to me that the rear cardan aligns the plane of rotation of the flanges, while the manual transmission bends on the cushions and the front cardan ends up outside the plane of the flanges, hence the misalignment of the cardans, which generates vibration.
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.
Troubleshooting Methods
Some manipulations can be performed independently, without the services of a sometimes expensive car service.
However, the quality of spare parts for domestic cars leaves much to be desired, so, say, having bought a Chevrolet Niva driveshaft, no one receives a 100% guarantee that the problem will be solved.
But many people prefer to take risks by purchasing new parts.
The engine and gearbox mounts must be periodically monitored. If the car is operated in harsh conditions, then the load on these components increases significantly. The Chevrolet Niva driveshaft must be balanced, but only with a certain runout tolerance. Some drivers send the driveshaft for restoration, while others prefer to buy a new one.
A certain amount of vibration can be eliminated if you replace cardans with crosspieces with cardans with CV joints.
In this case, you will have to make minor changes, since the shank flanges are not identical. Finally, you can center the transfer case yourself if you loosen its fastening and, moving it along the plane, achieve such a position that the gap between the flanges is minimal. This refers to the flanges of the transfer case drive shaft and the intermediate shaft.
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.
Chevrolet Niva 2003 Logbook Eliminating cardan vibration
After driving for a couple of days with a vibrating CV joint on the rear axle, I realized that I need to do something, otherwise it shakes so much that I really want to go to the toilet after the trip) It won’t take long to lose weight.
I decided to test it by swapping the front and rear universal joints. At the same time I stretched the rear axle shank, but the nut was loosened almost one turn. The backlash of the shank was immediately reduced by 2 times.
I went to test it and lo and behold. The vibrations have disappeared. More precisely, of course, they are there at the same 60-100 km/h, but they are so little noticeable that they are felt only visually by the vibration of the gear shift knob.
It’s still not clear what the matter is. Whether in an unscrewed shank, in an unbalanced new CV joint, or a complete set of looseness of the car, which has a greater effect on the CV joint than on the spider. For now, I decided to leave it like this, in front of the CV joint, in the back of the cross, although the rear one is also due for replacement soon, the cross is moving a couple of mm. But for now let's ride. Maybe we’ll save up for the second CV joint, but for the sake of interest we’ll save up for the Saratov one.
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.
Operating principle of HBO
According to the design and technical characteristics, gas equipment is divided into several generations:
- 1st generation. It is a vacuum reducer with gas supply to the mixer by opening the intake manifold with vacuum;
- 2nd generation. The so-called electronic gearbox, in which the fuel supply is controlled by an electromagnetic valve that is activated upon ignition.
- 3rd generation. Electronic gearbox with feedback in the form of a lambda probe control system. The operation of such a gearbox is associated with a negative effect - reverse clap, which indicates a constant risk of equipment breakdown.
- 4th generation. This system provides controlled fuel supply through electromagnetic injectors.
Cylinder for gas equipment 4th generation
Among devices operating on injectors, the Gromyko Gas Injector (GIG) is considered to be the most suitable for working in the field. This system from Russian manufacturers is distinguished by the presence of one gas nozzle. Among the HBO sets in this series, GIG 3 and GIG 3 DL are optimal for use in the field. Regulation, startup and shutdown of the system is carried out using specialized software. The advantage of GIG 3 DL, among other things, is that there is no need to install additional emulators. For new car models like Lada Largus, you can choose an acceptable option among imported analogues.
When choosing equipment for the field, it is worth considering that injection cars are far ahead of carburetor cars in many respects. On Niva cars this advantage is especially clearly visible.
Niva owners should opt for GIG 3 DL
Among the wide range of gas equipment, Niva owners should choose the GIG 3 DL or purchase an imported electronic ejector system.
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As experience shows, reworking with a gas generator in the field after adjustment pays for itself quite quickly, compared to spending on refueling with gasoline. The ejector system does not have such advantages, but it can be found on models 21213 and 21214, for example, the Lovato system.
Which cardans are best installed on a VAZ 2123?
The most popular among Shniva owners are cardan shafts from the following manufacturers:
- Tirsan Kardan is a manufacturing enterprise in Naberezhnye Chelny, specializing in the manufacture of driveshafts for AvtoVAZ vehicles and other Russian automobile plants;
- SiM (Sickle and Hammer) is a Saratov plant producing transmission components, CV joints, cardans and camshafts;
- Belkard is a Belarusian enterprise that produces spare parts for buses, trucks and passenger cars. Among other things, this company produces reinforced splined cardans for Shnivy.
Shaft balancing
The procedure is necessary after replacing crosspieces or minor damage to the driveshaft. It is performed on a special balanced stand with sensors and control surfaces.
Important! At home, using it will not be possible to achieve the required accuracy in selecting loads. Therefore, balancing should be performed in a specialized service station.
How to reduce fuel consumption
To reduce fuel costs on various models and modifications of the Niva, use the following recommendations:
- Try to drive smoothly at speeds of 80-90 km/h, without exceeding, sudden acceleration and braking.
- Prefer smooth roads to off-road.
- Carry out regular diagnostics and promptly correct engine problems.
- Clean fuel system components regularly.
- Minimize the use of additional electrical equipment: air conditioning, heated seats, etc.
- Install the correct firmware on the controller, which reduces gasoline consumption.
According to statistics from car owners, gasoline consumption on a Niva when filling the car with AI-95 gasoline is lower than with AI-92.
