VAZ-2112 (16 valves). Repair and operation, owner reviews

In 1995, the Volzhsky Automobile Plant began production of a car, at that time a new generation VAZ-2110 with a sedan body.

Immediately, two more cars were produced on the basis of this model, with a station wagon body - VAZ 2111 and a hatchback - 2112.

Production of all three models continued until 2007.

The 10-series models belonged to the budget category of cars, which naturally affected the quality of materials and the car’s assembly itself, but in general, despite the questionable build quality, the car turned out to be in demand.

Historically, VAZ cars have never been famous for their reliability; this trend has not bypassed the 10th family either.

But it is worth noting that the maintainability of these machines is quite high; many problems are completely fixable, even in garage conditions. And the cost of spare parts is significantly lower than for foreign analogues.

Like any car, the VAZ-2110 and models based on it have weak points that you should first pay attention to during operation.

Next, we will go through all the components of the VAZ-2110, 2111, 2112 cars, with which problems most often arise, and at the end we will dwell on the reviews.

Model history

The tenth family of front-wheel drive models from the Volzhsky plant began in 1995, with the 2110 sedan model. Then in 1998, the plant launched the assembly of the station wagon - 2111. In 1999, the plant began producing hatchbacks.

In the first years of production, the 2110 used a 1.5-liter sixteen-valve engine. At that time, this was the maximum capacity of the plant.

In 2000, the plant introduced a new version of the hatchback - VAZ-2112, 16 valves. Compared to the conventional eight-valve version, the car had more power and dynamism. The model immediately captivated car enthusiasts; its appearance was sporty.

VAZ 2110: “Russian Motoren” or a little nostalgia

...She reached Paris and even returned to Nizhny. Herself. Everything survived, except for the bungling of our servicemen. But more on that later. Now I want to say how much I came to respect the editorial car VAZ 2110 after my colleague and I traveled to the capital of France. Almost 8,000 kilometers there and back, and only two breakdowns, and even then not the fault of the car. “Ten” turned out to be “their guy” - noisy, sometimes quarrelsome, inconvenient, but they fit in. You can laugh, but with such a partner I would go on reconnaissance.

We went to the glorious city on the banks of the Seine to, as accredited journalists, prepare a review of the Paris Motor Show. It’s impossible to think of a better test drive – both for the car and for the crew. There were three of us - me, my friend and the car. As moral support, there is a repair kit in the trunk. It would be better if we threw him off the ferry somewhere between Turku and Stockholm... Threw him out and forgot. But no, we drove all over Europe, already knowing that it was of no use: the fuel pump pretended to be a bottle for analysis, the timing belt pretended to be some kind of sponge, we were two idiots, and only the “ten” remained itself, honestly approaching us to the final point of the route.

So, VAZ 2110. I recently read on the Internet that this car had three nicknames: “matryoshka”, “pregnant antelope” and “remnant”. I don’t know... In five years of operation, the “ten” has not heard a single offensive word from me. It’s not her fault that she constantly and periodically pestered us with various ailments. In the very first month, the starter flew - at first, all the “ten” had such a weak point. Then the coolant began to flow - due to vibration, the hose was constantly chafing and it was draining from the system, sometimes at the speed of a courier. Until we solved this problem, we constantly carried a can of antifreeze with us. Otherwise, screw the engine. And the handles falling off, power windows breaking, turn signals refusing to function, and, worst of all, the speedometer needle hanging... But when necessary, the car could pull itself together and did not let us down. So who should be blamed? Designers, technologists, component suppliers, but not her.

She was just unlucky. We are all unlucky with our auto industry. However, he was also unlucky. A child of a planned economy, he did as he was told for decades. No initiative, nothing that could go beyond ideological boundaries. And yet, the VAZ 2110 and its family - the VAZ 2111 station wagon, the five-door hatchback VAZ 2112, as well as modifications based on them, could become quite advanced cars for their time. If only they had shown up on time...

But the USSR auto industry had a very hard time with this. He could work like clockwork, but only during war - on heroism, dedication and other virtues that were safely asleep in peacetime. So AvtoVAZ may have slept through its finest hour. Work on the VAZ 2110 project began back in 1983. The three-door VAZ 2108 hatchback was taken as the basis for the future sedan, but during the work process so many ideas arose that simply turning the hatch into a promising sedan was out of the question. The projects were divided: they attached a trunk to the “eight” and got a VAZ 21099, and the “ten” went its own way. She went and got lost - in time, space and God knows what else.

And, after all, everything seemed to be going well: in 1985 they made the first prototype, it would seem, a little more... But bad luck - the pre-production version of the car “lit up” only in 1992. The photo depicted the future “ten” at the Porsche testing ground, which was especially inspiring. But what happened all these seven years? Well, in general, spaceships roamed the expanses of the Universe. People went to Moscow to get the deficit. Then I stopped because our Union collapsed. And Volzhsky Automobile was still working on the “ten”... As a result, the first cars were assembled in pilot production only in June 1995, and mass production began in 1996.

Thirteen years passed from the start of the project to its implementation. THIRTEEN! This is a lifetime for a car. No, even two, or even three lives. But this is there, in the West, where frequent changes of generations are programmed by competition. And we had our own wedding here. We were in no hurry to make a breakthrough, and it turned out that by the time the “ten” appeared on the market, the technologies of the Western automobile industry had gone far ahead. The VAZ 2110 could no longer be called a completely new car, but for us it nevertheless became one.

Whatever one may say, the appearance of the “tenth” family was a milestone for the domestic automotive industry. If you close your eyes to the always lame quality of VAZ products, then you can say that the car turned out to be a success. The first "tens" were carburetor, but quite quickly AvtoVAZ introduced an electronic engine control system and installed an on-board computer. The cars could be equipped with power steering, power windows, a new technology for painting bodies was mastered... The VAZ 2110 was as different from the “classic” as heaven from earth. This was noticeable not only externally. The interior of the car received different seats and upholstery, it was pleasant to be in, although the dashboard looked a little rough. Later we replaced it in one of the many tuning companies in Togliatti with a nicer one, with an oval visor over the instruments. Traffic cops came at us more than once for this unauthorized arbitrariness, but we successfully fought back.

With a length of 4265, a width of 1680, and a height of 1420 mm, it cannot be said that the “ten” was a very cramped car. Just right for the city. The main thing is to duck under the steering wheel when getting into the driver’s seat without touching it with your knee. The exit was also associated with a kind of semi-acrobatic sketch. But these are trifles when there are wheels. Although... Electric windows, electric mirrors, power steering, and air conditioning would be nice, but in the late nineties and early 2000s this was an unaffordable luxury for our cars. But the car turned out to be quite nimble, light and not very gluttonous.

The eight-valve injection 91-horsepower 1.5-liter engine pulled well, and the gearbox was quite adequate. In general, everything depended on what day and by whom the car was assembled. Some were unlucky from the very beginning, and they butted heads with the service until they were blue in the face, demanding repairs under warranty (at first, the availability of spare parts was, to put it mildly, not very good...). We didn’t butt heads: our “ten” in the VAZ 21102 modification never let us down in a big way, and we can get used to the “little things”, just as we got used to its not very stable behavior in corners. But on the track it was quite possible to set the heat.

Once, on the section from Gorokhovets to Nizhny Novgorod, I thoroughly fired it up. I caught courage and gave out about 170 kilometers per hour. Up to one hundred and twenty, the speed picked up almost imperceptibly. Then everything turned out to be more complicated: I pressed on the “slipper” and waited: 130, 135, 150, after a thorough pause - 155, 160 and a little more. One got the impression that the car was feverishly looking for some hidden reserves in its “organism”, and, finding them, although reluctantly, it responded to the “gas”. After one hundred and fifty, it was no longer comfortable: I perceived both myself and the car as fluff, which could be picked up and carried away at any moment.

The visibility and maneuverability of the car were quite satisfactory. I also felt its dimensions very well, which, I think, depended not only on its compact size. But in terms of sound insulation, the “ten” required improvements, which many did on an individual basis. Over the years of production (1995 - 2007), the car received more than a dozen modifications, including the VAZ 21106 GTI 2.0 16V, equipped with a 2-liter Opel C20XE engine, the sports VAZ 2110 RPD with a rotary piston engine, and even an extended version.

The second oldest in the family was the VAZ 2111 station wagon, which, according to many, looked much more harmonious than the sedan. And the capacity of the luggage compartment was much higher, which made it popular as a delivery vehicle in various organizations. It stood on the assembly line for quite a long time - from 1998 to 2009.

In 1999, AvtoVAZ began production of a five-door hatchback. It was shorter than the sedan by 95 mm and had more sporting habits. While retaining the best qualities of the VAZ 2110, the hatchback increased them due to the separate rear seat from the VAZ 2111 station wagon: with a smaller trunk volume, this solution increased the loading area. The car was produced in several modifications, including with a 1.5-liter 16-valve engine (Standard, GLI versions) and with a 1.6-liter also with 16 valves, on which the problem was solved, associated with their bending.

Finally, in 2002, a three-door modification of the “two-wheeler” appeared - VAZ 21123, which, based on marketing considerations, received the name “coupe”. It was produced in small series until 2006 and was equipped with a 16-valve 1.6-liter engine.

However, let's go back to 2004. We prepared thoroughly for our trip to the Paris Motor Show. First of all, we sent the car to a service center, where they diagnosed the engine, checked the suspension, tightened everything that was needed, threw another spare tire into the trunk and accepted the repair kit as sponsorship. The one that should have been drowned. Yes, they also replaced the timing belt and fuel filter. It would be better if we didn't do this...

Having safely made our way from Nizhny to the border with Finland, reaching Turku, where we boarded a ferry going to Stockholm, having made a forced march across Sweden to Malmo, and from there - along a fifteen-kilometer bridge across the Öresund Strait - to Copenhagen, we are on the following evening They left Denmark in the afternoon and broke into Germany at midnight, where they spent the night. The car behaved excellently: heroically overcoming the broken “directions” of the Leningrad region, it, as a bonus, received smooth as a table roads of Scandinavia and Europe. But on German soil, a real ambush awaited us: in the vicinity of Cologne, while climbing a hill at a speed of 120 kilometers per hour, our timing belt broke—the new one that was installed for us at the service center on the eve of the trip. We, moving by inertia, barely slipped between the trucks and got out of the middle row onto the side of the autobahn.

We tried to replace the belt ourselves, but the craftsmen from Nizhny tightly tightened the bolt securing the generator drive pulley to the toe of the crankshaft. In addition, in field conditions it was impossible to prevent the crankshaft from turning. After fumbling with it for the rest of the daylight hours, in the morning we surrendered to the mercy of the German service.

And here, in the words of Mikhail Zadornov, I demand to feel pride in our people and... Russian cars! At the service station in the town of Burscheid, equipped with the latest technology, no one knew how to install marks in the gas distribution mechanism of our “ten”. Village!!! We showed. Then they asked to lower the car and check the crankshaft installation also using the mark on the flywheel, so as not to make a mistake. Its presence in the VAZ 2110 engine surprised the local craftsmen - wow, there’s a second control mark.

Having recovered from this discovery, they stated that it was still useless to install the belt; it was necessary to remove the cylinder head and repair it, since the valves were bent. We proved that the 8-valve engine does not bend them, but they do their own thing, and even at a raised tone. In the end, ours took it - with difficulty, using a pneumatic gun, unscrewing the central bolt and replacing the belt, our “Genosse” tried to turn the crankshaft with a ratchet. And he’s in no way! The joy of the German mechanics, who wiped the noses of two visiting fraters, knew no bounds: “Well, are you convinced that the valves are bent?!” We calmly suggested that they turn out the spark plugs and bring a starting device - the battery, after all, was completely discharged. Two attempts to start the engine ended in failure. The Germans showed a barely hidden gloating on their faces. Like we are pros, we told you so... But the third launch turned out to be successful. This was followed by a silent scene and a summary of one of the servicemen: “Oh, Russian Motoren!”

Russian Motoren!!! That's it, comrades Germans!

Suddenly they started addressing us with respect, calling us colleagues. We made a test lap around the site before the service, made sure that everything was working, and, catching up, we crossed Holland and Belgium in one sitting, and entered France at midnight. Other adventures happened there, but they were no longer connected with the car. She carried on well, even when she was loaded to the ceiling with press releases and other literature received at the motor show.

And I realized that on the “ten” you can go on long voyages with a calm heart, however, you need to rest more often on the road and spend the night only in motels, otherwise back problems are guaranteed. Still, in terms of ergonomics we are still not up to par. Otherwise, everything is almost fine. The “ten” returned us home, although mortally tired, but safe and sound. For which I thank her very much. Despite everything…

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Options

The car was produced and is offered in “Lux” and “Norma” trim levels. The “Norma” differs from the luxury version only in that it did not have a trip computer, fog lights, a set of alloy wheels, or a headlight cleaning system.

“Norma” is equipped with electric windows for all four windows, central locking, remote trunk opening drive, height-adjustable steering column, and immobilizer.

What’s most interesting is that none of the trim levels (no matter how expensive they are) have air conditioning. By today's standards, this is quite a big disadvantage, because of which drivers are increasingly looking towards used foreign cars.

Appearance and body structure

As for the dimensions, the VAZ-2112 (16 valves) decreased in length by 93 mm. This change occurred in the rear overhang area. But at the same time, the size of the wheelbase did not transform. The body length was 4170 mm. And the height of 1676 mm and width of 1430 mm remained traditional for the “tenth” family. The top line on this body very smoothly turns into a fairly short rear overhang and a large wing. This design allowed the developers to make the car more manageable.

If you compare this hatchback with more classic VAZ models, it has better aerodynamic characteristics and a modern appearance. The model is very popular among tuning enthusiasts.

The fully galvanized body of the “tens”, which became very popular in its time, is still subject to corrosion. Many owners of new cars did not consider it necessary to carry out anti-corrosion treatment. The bottom very quickly rusted to holes.

Advantages

• Appearance . When the VAZ-2112 first began to be produced, the design of the car seemed to many to be ahead of its time. Nowadays, this effect has practically been reduced to nothing, but this does not prevent the VAZ-2112 from looking confident: the body shape is smooth , aerodynamic, does not give the impression of a “brick” due to its streamlining, and even remotely appears as sporty. Balanced design solutions make the model an attractive option for both tuning enthusiasts and people who simply need a decent vehicle without excess design.
• Capacity . With relatively small dimensions and a passenger car form factor, the VAZ-2112 can fit up to 5 people (albeit quite cramped), as well as up to 475 kilograms of things necessary for transportation. The rear seats can be converted for this purpose, freeing up additional space.
• Power . For trips around the city and even rural areas, especially within Russia, the car is perfect. It does not vegetate and accelerates confidently, while providing a top speed of almost 200 kilometers per hour in the standard configuration. The VAZ-21120 gets to 100 kilometers per hour in 12 seconds , but there is always the opportunity to reduce this time, although in everyday conditions this is not so necessary.
• Ease of maintenance . Unlike foreign cars, caring for domestically produced cars is much cheaper, and spare parts can be found almost everywhere, and the VAZ-2112 is no exception. Being widespread throughout the country, the machine does not suffer from a shortage of components. Repair and maintenance are also not a problem, because the workers of any service station will be able to fix any problems that arise. If there are no similar enterprises nearby, then even repairing it yourself is a fairly simple process.
• Low fuel consumption . It is 7 liters per 100 kilometers and provides an additional opportunity to save money on the purchase of already expensive gasoline. With a moderate frequency of car use, you won’t have to fill the tank with “ninety-five” so often, which is undoubtedly good news.

Interior and salon

The interior of the VAZ-2112 (16 valves) features all the best from two brothers. The best characteristics of the station wagon's interior are combined here. The backs of the rear seats are divided into two parts. Each of them can be folded. This significantly increases the trunk volume. And this is the only advantage. Inside, everything is more modest than in any foreign cars of the same classes and the same years.

Owners say there is little light both in the cabin and on the dashboard. All the panels seem to be perfectly assembled, but something still creaks somewhere. The central tunnel next to the handbrake is equipped with buttons to control the window lift - it is believed that this is not very convenient to use. There are no such options for rear passengers - even mechanical handles are not provided in the basic configuration.

Another disadvantage, according to the owners of the VAZ-2112 (16 valves), is the complete absence of at least some sound insulation. When driving with music on, you can clearly hear the engine and power steering working.

The big problem is the incredibly cramped pedal block.

From the edge of the brake to the console is just over 10 cm. Many people complain about this very narrow opening. In order to operate the gas pedal, you have to turn your foot sideways. And if you don’t turn it out, then when you press the accelerator pedal, your foot catches the brake. In 2110 this is all right. Maybe the reason here is that the scarf overlay is made more convex? Maybe.

And the front seats are made well. They are additionally equipped with side support. But even here everything is not so clear. Many people complain about inconvenient adjustments. But large people fit perfectly into the cabin and into the driver's seat - this is an advantage, since there is not much space.

Another positive feature is the low height of the trunk shelf. Once the fifth door is opened, nothing interferes with loading.

The car has good visibility. But the mirror in the cabin is not very convenient to use due to the large pillars and the tilt of the glass. Rear passengers also note excellent performance in this regard. But there's little headroom in the back.

Engine

• All main sensors are more or less reliable, but the mass air flow sensor and IAC require periodic cleaning of crankcase gases (they are subject to heavy contamination).
• When approaching 60 thousand mileage, it is imperative to replace the timing belt, otherwise the likelihood of a break is very high.

It is worth noting that there are a number of additional problems with the engine related to cars produced in 2002–2003, which are missed in this case.

Chassis and steering

The main complaint about the chassis is excessive softness. This is all due to the redesigned suspension system. But many drivers lack feedback. And at the same time the car handles perfectly. By turning the steering wheel a little, you will immediately feel the result. In terms of inertia, this hatchback is many times superior to both a sedan and a station wagon. But turning the steering wheel at low speeds is quite difficult. The fault for this lies entirely with the hydraulic booster. It reduces the effort, but this does not make the car more obedient.

The driving characteristics are quite confident. The car is controlled on ice. Of course, there is no ABS here. The brakes are vacuum-assisted and have discs at the front and drums at the rear. They brake – and it’s good.

Engine VAZ-2112 (16 valves)

The engineers used something new as a power unit. The unit was not created anew, but on the basis of the 21083 engine. It retained all the geometric characteristics of the 83rd, but at the same time it was completely different from it both in power and in other characteristics. Famous car brands took part in its development. The engine is highly efficient. Among the disadvantages is weak torque at low speeds. Owners also write in reviews about a weak belt drive if the timing belt breaks.

VAZ-2112 (16 valves) has an engine capacity of 1.5 liters. The power it can produce is 93 hp. With. The torque is 133 Nm at 3300 rpm. As for environmental standards, the engine is designed for Euro-3. There are 2 valves per cylinder. One is for inlet, the second is for outlet.

Description

In 1997, a new internal combustion engine under the designation VAZ-2112 was developed and put into production. The VAZ-2110 was taken as the basic basis. The changes affected the system for supplying the working mixture to the cylinders, and, most importantly, the cylinder head. Engine production continued until 2004.

The VAZ-2112 is an in-line four-cylinder petrol unit with a volume of 1.5 liters and a power of 93 hp. s and a torque of 128 Nm.

Under the hood of the VAZ-2112

The engine was installed on VAZ cars:

• 2110 (1997-2007);
• 2112 (1998-2004);
• 2113 (2000-2004).

The VAZ-2112 replaced the aging “eighth” engine. The laid down requirements for increasing power, environmental standards and increasing efficiency can be achieved in two ways - installing turbocharging or changing the power system with the transition to a multi-valve cylinder head.

VAZ engineers took the second path and created a fundamentally new engine using positively proven components and mechanisms of the old one.

The cylinder block remained traditionally cast iron. The cylinder head mounting has changed. Additional oil channels have been created to lubricate the crankshaft main bearings. The cylinders are not lined, they are bored directly into the block.

The crankshaft is made of cast iron and is mounted on five bearings. The main and connecting rod bearings are made of steel and aluminum. The crankshaft has a special design and is not interchangeable with shafts of similar engines (VAZ-2110, 2111).

The connecting rods are steel. A steel-bronze bushing is pressed into the upper head.

The pistons are made of aluminum alloy and have a complex shape (the skirt is conical in the longitudinal section, oval in the transverse section). There are three piston rings, two of which are compression, one is oil scraper. The piston pin is of a floating type, fixed with retaining rings.

Aluminum cylinder head. At the top there are two camshafts and 16 valves. The valve seats are metal-ceramic, the guide bushings are brass.

The valves are steel, with hydraulic compensators. They have a V-shaped arrangement.

Timing belt drive. When the belt breaks, the valves bend.

VAZ-2112 cross-section

The ignition module includes two high-voltage coils and two electronic units. Not dismountable, cannot be repaired. The manufacturer recommends using AU17DVRM spark plugs.

The power supply system is phased distributed injection. Controlled by ECU (Bosch, GM or “January”).

Combined lubrication system. Gear type oil pump. To improve cylinder lubrication and piston head cooling, special oil nozzles are installed.

Oil nozzles

The cooling system is forced, closed type.

Despite the presence of many original parts, some are identical to parts from other VAZ engines.

Cylinder block, connecting rods, pistons

The VAZ-2112 engine (16 valves) is equipped with a block cast from high-strength cast iron. At first glance, it seems that it is completely similar to model 21083. But this is not so. The main difference is the 10 mm smaller diameter of the head bolts. Other bosses for injection system sensors and another honing technology.

The connecting rods are made of steel by forging. They are distinguished by their I-section. These same connecting rods can be found on the 2110.

The pistons are steel, hollow, floating. The finger has a diameter of 22 mm. Length – 60.5 mm.

Elimination methods

Before moving directly to methods for eliminating the problem, it is worth noting that you do not need to get into the components of power units if you do not know the design. It is best, in such cases, to contact a car service, where everything will be done quickly and efficiently.

Poor quality fuel

Statistics of low-quality fuel and how it gets to gas stations The issue of low-quality fuel that gets into the fuel system of a car has been raised more than once, which can lead to various types of breakdowns. So, poor acceleration can be directly related to the fact that fuel has entered the system and does not detonate well. You can fix the problem by draining the gasoline and cleaning the fuel tank.

Fuel system

If the fuel system is clogged, namely poor operation of the gasoline pump or clogged injectors, this effect may occur.

To eliminate the malfunction, it is necessary to dismantle the elements and clean them thoroughly. If cleaning does not help, you need to identify damage and replace parts. For the fuel pump - replacing the mesh and directly replacing the fuel filter itself, which is no longer able to clean gasoline, but for the injectors - cleaning on a special stand.

Ignition

The reason for poor acceleration may lie in faulty ignition elements. Thus, breakdown of high-voltage wires or failure of spark plugs can become the main problem. To eliminate the effect, it is necessary to check the resistance of the element, as well as visually inspect for insulation damage or cracks. If defects are found, the wires and spark plugs must be replaced. The choice of spark plugs must be approached very carefully.

ECU errors

Troubleshooting ECU errors using a laptop The electronic control unit is designed to prevent and signal faults, although sometimes it itself can cause the problem. Thus, the accumulation of errors can lead to incorrect interpretation of incoming signals, both incoming and outgoing. Therefore, it is worth connecting to the ECU and looking at the errors that pop up. If necessary, they must be canceled.

Clutch

Worn clutch disc. To resolve the problem, you need to replace the disk. The process is labor-intensive and long, so you will have to stock up on patience and tools.

Engine problems

Engines of the VAZ-2112 family are very reliable.

Major repairs are what the owner faces if the engine loses compression. Loss of compression can occur for many reasons, the most common of which is simple wear and tear. A compression test will show the compression ratio and indirectly indicate whether there are reasons in the engine itself.

VAZ-21124

Also, the 21124 unit was installed on the “two-wheeler”. Here the volume is 1.6 liters, the power is 89 liters. s., torque – 131 Nm. The power system is also distributed injection. The engine supports Euro-3 and Euro-4.

This engine is a continuation of the 2112 line. It was possible to increase the volume using a crankshaft with a larger crank radius with the same cylinder diameter. The cylinder block here also has an increased height.

Here they were able to solve the problem of valve bending, and the characteristics are at a sports level.

Ignition system

An electronic module is used as the heart of the system. Car owners write a lot about how problematic it is. You should select candles for it very carefully.

The VAZ-2112 ignition (16 valves) has two coils. One is used to operate the first and fourth cylinders, the second – for the second and third. If there are problems in the module, the spark disappears in pairs. The system itself is not maintained or repaired. Its control is entirely given to the controller.

There are several sensors in the system. This is a crankshaft position sensor that sends a signal to the ECU, and then the “electronic intelligence” calculates how to operate the coils. In the formation of the mixture and ignition, the familiar mass air flow sensor, coolant sensor, and knock sensor, which are familiar to many, work. Other VAZ-2112 sensors (16 valves) work the same way. For example, throttle, oxygen, exhaust gas sensors.

Causes of poor speed gain

General view of the engine under the hood

So, let's look at what the problem is and where exactly you need to look for it:

• Fuel pump and pressure.
• Injectors.
• Fuel rail.
• Ignition system.
• Electronic control unit.

Now that all the causes are predetermined, you can begin sequential diagnosis and methods for solving the problem.

Options for solving the problem

To diagnose all of the above systems you will need a set of wrenches and screwdrivers, a tester, a little knowledge and hands growing from the right place. The main task remains to correctly distribute the sequence of operations. This is exactly what we will talk about next. So, let's look at where we need to go to remove the effect that has arisen.

Fuel pump, filter, rail and injectors

Fuel pump in the process of disassembly and diagnostics

First of all, for diagnostics it is necessary to diagnose the gasoline module (pump). If the car drives at high speeds, then everything is fine with the pump itself, but the problem may lie in the filter mesh. For inspection, you will have to remove the fuel pump and replace the cleaning screen on it, which is primarily responsible for purifying gasoline. Most likely, it is dirty and needs to be replaced.

General view of the fuel filter

The second problem may be the fuel filter, which needs to be replaced. It is often dirty and needs to be replaced. After the first two elements of the fuel system have been replaced, you can try to drive it and see if the problem goes away.

General view of the fuel rail with injectors

If, nevertheless, the car continues to gain momentum poorly, then you need to crawl under the hood and look for the problem directly in the fuel injection system. To do this, you need to measure the pressure in the fuel rail.

To do this, dismantle the fuel rail with injectors and disassemble the assembly. The first element must be checked for leaks. Injectors are often installed on a special stand, cleaned and diagnosed. If necessary, all damaged elements are replaced.

Ignition

Unscrewing the spark plugs from the engine

If the fuel system has been checked and is working properly, then you need to look for a problem in the ignition system. So, the high-voltage wires are dismantled and the spark plugs are unscrewed. Both elements are checked using a tester. Of course, it is best to diagnose spark plugs on a special spark plug stand. As practice shows, the problem in 50% of cases lies precisely in this unit, so after checking it is necessary to replace the damaged elements. We conducted a special survey on the choice of candles.

Typical engine faults

Many car enthusiasts who own an “iron horse” with a 2112 engine complained about valve deformation when the timing belt breaks. This is a typical malfunction. The repair is simple. You just need to change the pistons to those on 21124. The problem is solved there, but the price for this will be a decrease in power. If you do not want to lose in this indicator, you need to constantly monitor the belt. Listen to the sounds. First the rollers squeak, then rustle.

In addition, the engine can triple. How to deal with this unpleasant phenomenon? Check the compression level, ignition module, wires. If the speed fluctuates, then you can suspect the throttle valve, idle air control, crankshaft position sensors, mass air flow sensor.

Another malfunction is noted. It can occur at idle and while driving. The engine sometimes stalls when changing gears. Clean the throttle body or throttle sensor.

If the unit does not start at all, check the starter and battery.

The ignition or power system may also be malfunctioning.

With proper care of this engine, the VAZ-2112 (16 valves) will not need repairs. Just follow the manufacturer's instructions and perform regular maintenance. All instructions about basic operations will not cause difficulties.

Causes

There may be several reasons for the lack of proper speed gain:

• There are problems with the air supply;
• The ignition has failed;
• Fuel system malfunctions have occurred;
• There were problems with the exhaust system.

Fuel system problems are common in gasoline engines. They are the most common. Therefore, you should start with checking it.

Fuel system

If problems arise when accelerating the car, start checking by inspecting the fuel system.

1. Most often, the engine stops gaining momentum because the fuel pump fails. At first, this may have a slight effect, sometimes unnoticed. Over time, as the pump wears out, the speed and power will begin to drop, and the acceleration dynamics will decrease.
2. If the fuel pump is partially damaged, it still partially performs its functions, but is no longer capable of delivering the same volumes of fuel. This results in fuel starvation and power loss.
3. The best solution to a problem with the pump is to replace it. It is better to trust repairs to specialists.

Ignition

If the ignition fails, you will have to conduct a comprehensive check of all system components that may cause a drop in engine power and speed.

What to check

Peculiarities

Prices

At the very beginning, they asked for more for this hatchback than for other models. It was considered quite expensive. Perhaps the reason for this is the power windows and lock. However, a little later, prices dropped, and configurations and equipment became richer.

Today, the average price for a VAZ-2112 car (16 valves) is from 90 to 250 thousand rubles, depending on the configuration, tuning, and engine. The car is suitable for various changes, so owners modify it.

According to user reviews, the most optimal cost is about 150 thousand rubles. Since at this level it is not rubbish that is offered.

So, we found out what technical characteristics, price, reviews and configurations the VAZ-2112 car has. Happy shopping!