Maintenance of the VAZ-2112 engine with 16 valves: 5 important tips

The VAZ-2112 is the last in the “ten” family. This is a fairly dynamic car with improved performance and external characteristics. The machine is the best-selling because it attracts buyers with its relatively low price, practicality and the ability to repair it almost in the field, far from a service station. Many consumers are interested in the VAZ-2112, 16 valves. There are reasons for this.

A little history

The VAZ “ten” line dates back to the 2110 sedan (1995). Three years later, the assembly of the 2111 station wagon model was established, and a year later the production of hatchbacks began.

At first, the 2110 model was equipped with a sixteen-valve one and a half liter engine. These were the maximum capabilities of the famous automobile plant in those days.

But time passes and progress, including automotive progress, does not stand still - another car appears, VAZ-2112, 16 valve. The hitherto known eight-valve version had less dynamism and power. And the appearance of the car has become more sporty.

Crankshaft regulator

As you understand, the location of all sensors on the 8-valve injection VAZ 2110 is different, but they are all combined into a single system. The crankshaft sensor is no exception.

Regulator

Through the operation of this device, the system determines when to supply fuel and a spark to ignite the mixture. In fact, the design of the unit is presented in the form of a magnet and a coil of thin wire.

Its strengths include:

• Works for a long time and efficiently even under high loads;
• Functions in conjunction with the crankshaft pulley;
• If the sensor breaks down, the engine stops working or limits the speed to no more than 3500 revolutions.

The device is located on the oil pump, literally at the very top of the pulley teeth. To be more precise, 1 millimeter from them.

“Lux” and “Norma” configurations

The plant presented the car in two versions. Equipment:

1. "Lux". Trip computer, alloy wheels, fog lights, headlight cleaning system.
2. "Norm". Electric windows for all door windows, central locking, height-adjustable steering column, immobilizer, remote trunk release.

Neither trim included air conditioning, which is a significant drawback in terms of comfort by today's standards. It is because of this that many drivers preferred used foreign cars to VAZ.

Air regulator

Having determined the amount of air, the system determines the required volume of gasoline. The air sensor is responsible for the suction volumes. The disadvantages of this device include:

• Due to exposure to moisture, performance is impaired;
• At low speeds, the sensor produces increased readings;
• The device cannot operate normally when idling;
• Problems may arise when starting the engine;
• After increased power mode, the engine may stop abruptly;
• Fuel consumption increases.

How does this sensor work? Let's try to figure it out.

1. The regulator design includes three sensitive components that are installed in the air flow. One of the elements determines the temperature of the intake air, and the other two heat up to the required levels.
2. Air flow is determined by measuring the power of electricity to maintain the required temperature.
3. The regulator has a mesh that is mounted in the air flow.
4. All this allows you to transfer information to controllers, which, in turn, enable certain modes to change or maintain loads.

Body Features

The appearance and body design have undergone some changes. VAZ-2112 (16 valve engine) became shorter by almost ten centimeters. The reason for this is the design of the rear overhang. The wheelbase remains the same. Changes:

• body length - 4,170 mm;
• height -1,420 mm;
• width - 1,680 mm.

The top of the body began to smoothly transition into a rather short overhang, which is crowned with a large wing.

This design has made the car better to drive, as aerodynamics contribute to this - performance has improved compared to previous models. The appearance of the car has also changed for the better.

This model is in great demand among tuning fans. The galvanized body of the “ten” family is still susceptible to corrosion. Therefore, “anti-corrosion” should be performed immediately after purchasing the car, without counting on the reliability of the factory coating.

Speed ​​sensor

It provides the electronic system with data about the current speed of the vehicle. It is relatively reliable, but in reality, developers have a lot to think about.

Location

It has two characteristic malfunctions:

• At idle speed the engine turns off;
• A broken sensor can partially affect the speed characteristics of the car.

Interior of the car

The interior of the twelfth model collected all the best from its previous “brothers”. Changes:

1. The rear seatbacks are separated. Each of the backrests folds (moves forward as needed).
2. The trunk has become significantly larger. Due to these changes, it became possible to transport long items, which summer residents like so much.
3. Car owners complain that it is a bit dark in the cabin and the dashboard is not very visible.
4. The assembly seems to be of high quality, but there are still pure VAZ noises and panel squeaks when driving.
5. The power windows are controlled by buttons in close proximity to the handbrake, and this is not entirely convenient: it would be more appropriate to place them on the car door cards. In addition, such a drive is only on the front windows, and the rear windows are opened with “oars” - handles, and even then not in the basic configuration.
6. There is an almost complete lack of sound insulation. However, almost all VAZs suffer from this. Even with loud music, you can hear the engine, chassis and rustling wheels in the cabin.
7. As for the front seats, their performance is good, although the adjustments are very inconvenient. People of large build feel comfortable in this car - both the driver and the passenger on the right.
8. The trunk is very convenient when loading - there is no shelf in the way.
9. The driver has an excellent view.
10. The rear seats are comfortable for passengers, although the gap between the roof and the passengers' heads is small.

The pedals are quite closely spaced. The driver experiences the greatest inconvenience from this in winter, when the shoes are wider.

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From the edge of the brake pedal to the console there is just over 100 millimeters, and many drivers have to press the accelerator pedal while keeping their right foot in an unnatural position, otherwise it can get caught in the brake pedal. The most interesting thing is that there are no such shortcomings in the “ten”. It is very possible that the convex panel on the side of the tunnel is to blame.

The interior looks much more modest in comparison with foreign cars of the same class.

Phase sensor

As for this regulator, it is only present on a car with 16 valves. Its task is to provide information that will allow you to understand where and when to inject fuel into which cylinder.

Installation location

If the sensor fails, nothing particularly terrible will happen from the point of view of the integrity of the car. But fuel consumption will increase sharply.

We have not touched on all the signs, but we will try to talk about many of them in our special materials.

To understand how to repair your VAZ 2110, we recommend that you first study the operating manual in detail. It says about all the sensors, their tasks, location and, of course, replacement methods. Often, car owners ignore the manufacturer’s recommendations, although it is he who knows better than others how to perform this or that type of repair, preventive maintenance, and how to get to a certain unit, the same sensor, with minimal effort.

Source: luxvaz.ru

Chassis

Many drivers believe that the suspension has become too soft, that is, there is no “feedback”. For decades, the car owner has become accustomed to feeling every bump on the road in a VAZ - this gives confidence in driving, since the driver “feels” the road and the car.

This effect appeared due to the modified suspension system

Nevertheless, the car handles perfectly, and this is felt even with a slight turn of the steering wheel. But at low speeds and during maneuvers at the very beginning of the movement, the steering wheel is a bit heavy. ABS is not provided.

The brake system is still the same:

• front disc brakes (with vacuum booster);
• drum brakes at the rear;
• Braking is confident and effective, and the system itself is simple and easy to maintain.

The car, with all its existing shortcomings, is still quite successful, especially if you take into account its reasonable price.

Fan sensor

This device is designed to activate the fan that cools the power unit. This sensor on the VAZ 2110 has strengths:

• It is very reliable because it includes a solid filler in its design. At elevated temperatures it expands;
• The design also provides for a spring-loaded lever, which prevents defects from occurring;
• The sensor does not allow sparks to occur;
• By purchasing a high-quality regulator, you can forget about replacing it for many years.

Car engine

The engine was not created from scratch, but on the basis of 21083, as a result, manufacturers received a 16-valve engine, and the VAZ-2112 feels more confident with it.

The geometric characteristics of the base engine are preserved, but there are differences in power, efficiency, and throttle response. Advantages:

1. Compensators are installed on the engine - now the driver is freed from adjusting the valves every 10 thousand km.
2. Environmental standards fit into the Euro-3 standard.
3. The injector makes it possible to forget about servicing the latter for a long time - there are far fewer worries than with a carburetor on a “classic”, for example. This ensures smooth running of the machine in all modes.
4. When the engine revs above 3 thousand, the engine has better throttle response and dynamics compared to its predecessor.
5. Due to the modified combustion chamber, the anti-knock qualities of this engine have been improved, and this is important considering that gasoline at gas stations is not of good quality. This measure of design changes extends the service life of the engine until the next major overhaul.
6. Stable operation of the cooling system in any weather allows you to maintain the desired temperature regime.

It is noteworthy that very famous automobile brands were involved in its creation. This, however, did not relieve the design from some shortcomings:

1. Low torque at low speeds.
2. The belt drive is not reliable and if it breaks on a 1.5-liter engine, it bends the valves, which cannot be said about a 1.6-liter engine. This drawback ends up costing the car owner a lot of money: the cylinder head has to be repaired.
3. The engine has two camshafts: intake and exhaust. They open and close the valves, intake and exhaust, respectively. There are not two such valves, as on the “ten”, but four for each cylinder. This, of course, significantly improves engine performance by supplying more combustible mixture to the cylinders, and there is also improved exhaust gas removal to the exhaust manifold. This is both an advantage of the engine and its disadvantage at the same time, since despite obvious advantages in operational characteristics, its repair is more expensive. If the 8-valve engine has always been famous for being unpretentious in maintenance, the same cannot be said about the 16-valve engine.

The timing belt (timing belt) is longer than on the base engine, therefore more expensive. If on the previous model one pressure roller and one timing gear were used, then on this one the number of mentioned parts has doubled.

Replacing the radiator frame of a VAZ 2110 with your own hands

Dear visitors of the website “Your Car”! We will be very grateful for your comments on the video clip “Replacing the VAZ 2110 radiator frame with your own hands”; registration is not required for this. We also ask you to let us know if you have any problems playing the video.

Vital, in order to reduce the duration of the pulse, replace the 3.6 KOhm resistor on the autostart board with 1.5 KOhm in the diagram it is designated R9; variable resistors are soldered to one side of it, setting the duration of the welding pulse.

steel to steel do not weld the tip from non-ferrous metal must be

How's the floor doing?

Non-ferrous metal is not welded to iron. The easiest way to reduce power is to insert an iron plate between the terminal on the wire and the puller, just as the power is adjusted on a welder with a nichrome spring. Well, or as has already been suggested, reduce the pulse time. 

experience is the son of difficult mistakes good luck in work - we are watching you 

Vitaly, in my opinion, you are tired of cars. I hear more and more often I don’t want to, I won’t, it’s not mine. Go on vacation, relax and go back into battle, delight us with new episodes of your series, good luck in your work 

Hello When it comes to working with plastic, you are great at everything, and even if it doesn’t look like it came from the factory, the main thing is functionality. ask 2-3 times more, and if a person needs it, he will pay, if not, he will buy a new one. Don't give up on this, just ask for more money. 

you're a cool dude, say hello to Dimon Krivoy Rog, good luck to you...

that shit doesn’t want to be sculpted onto the tundra

Main characteristics

The displacement of the engine is of particular interest to the consumer, and the displacement of the VAZ-2112 engine (16 valves) can be different. There are three types in total:

1. Engine VAZ-21120. Engine capacity is 1.5 liters. Power is 93 horsepower. Motor life is up to two hundred thousand km.
2. Engine VAZ-21124. Displacement - 1.6. Power - 90 horsepower. The resource is the same.
3. Engine 21128. Volume - 1.8. The power is slightly higher - 98 hp. With. Piston diameter 82.5 mm. The mileage before overhaul has been increased to 250 thousand km.
4. The cylinder block is cast, casting material is cast iron.
5. The connecting rods are forged, have an I-section and are fully interchangeable with similar parts of the 2110 model.

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Average fuel consumption for all engines is 7.5 liters.

As you can see, the engines are not much different, judging by their main characteristics.

DIY VAZ 2111 repair

We eliminate piston problems. Domestic VAZ 2111 cars are considered classic cars of their time. They were very popular. They were bought, received as a reward, and passed on as a family heirloom. It’s interesting, but even now you can often see a VAZ 2111 on the move on Russian roads. Having carried out a major or cosmetic repair of a VAZ 2111 with their own hands, motorists do not want to betray their “friend” and continue to ply the streets of Russian cities in cars that have expired their service life several times already Based on this, it is quite logical to talk about car problems that are most often encountered on the road. First of all, these are problems with the engine or chassis. If you don’t need to bore the cylinder block and other turning work, which is done on special equipment at car service points, then you can start repairing the VAZ 2111 yourself. This requires a great desire to help the car and some practical skills in automotive art. A special problem with old VAZ 2111s is piston faults. It’s just that over time this part wears out and the degree of wear is so great that such a repair measure as boring the cylinder block is no longer technically possible. It is recommended to completely replace this part. First, you need to make sure that the problem concerns the piston. This is not difficult to do by analyzing a number of signs. Firstly, the car loses traction. An increase in fuel consumption is also becoming noticeable; the exhaust pipe is increasingly producing strong smoke. The issue for repair is really a piston issue. We begin repairing a car ourselves by removing the engine head. Then carefully remove the piston from the cylinders. The next step is to check the rings, which, as a rule, wear out earlier than parts such as the cylinder block and piston. Next, according to the repair scheme, it is necessary to look at the performance on the cylinders, which involves checking how they move, whether there is any play, etc. If you have a special measuring tool at hand, then of course it is more expedient to measure everything accurately, carefully and in accordance with the developed The tables make it easy to determine the degree of wear. This is the main task of the diagnostic stage. If the wear rate is not critical, then it is recommended to change the rings and reassemble the engine. Another question is the complexity of repair work if the wear is critical. In this case, it will not be possible to completely repair the car yourself. You will have to turn to professional turners for help.

How to avoid common breakdowns?

Valve deformation due to a broken timing belt is the main “disease” of a one and a half liter engine, which requires considerable funds for its “treatment”. But, as they say, there is a cure for every disease.

It is enough to replace the “original” pistons with those used in model 21124 (selections for the valves are made there), and the car owner will avoid unwanted consequences associated with disassembling and repairing the engine.

This, however, is fraught with some complications, since it degrades the engine, which will lead to a drop in power.

If the owner of his car does not want to lose power, then he needs to do the following:

• buy timing belts only from proven and time-tested brands;
• carefully monitor the condition of the said belt and in case of the slightest defect, immediately replace it with a new one, without waiting for an unplanned rupture;
• It is also necessary to control the operation of the pressure rollers. The slightest squeak or rustling is a signal to replace the roller.

Another very common malfunction is “floating” engine speed. As a rule, it's all about the idle speed sensor, which also needs to be replaced periodically. Unfortunately, the quality of sensors has deteriorated sharply in recent years.

If the engine stalls when changing gears, you should wash the throttle valve with a special carburetor cleaner.

When the engine “troubles”, you need to check the high voltage wires (drivers call them armored wires) and the module. It would also be useful to check the compression in the engine cylinders.

Of course, you shouldn’t discount the fuel system either. You need to try to refuel with the “correct” gasoline, both in terms of octane number and in terms of its quality. As for fuel filters, you cannot install them if they are of dubious quality and from unknown brands. Filters should be replaced every 10 thousand km, although a lot depends on the quality of gasoline. One unsuccessful refueling can be disastrous, as a result of which the fuel filter will become unusable and the injector nozzles may become clogged, which also leads to unexpected costs.

How does a malfunction of the electronic control unit affect the operation of the injector?

The electronic control unit of the VAZ-2110 car consists of 3 high-precision components:

• ROM – devices for storing data (memory);
• PROM – a device for transmitting dynamic data;
• RAM is the regulating memory of the block.

Advice: the entire complex of presented elements will function only if there is voltage in the circuit. If there is no voltage in the wiring, then it is necessary to eliminate the faults in the fuse box on the VAZ-2110.

Thus, the electronic control unit acts as a kind of microprocessor that is responsible for the operation of the entire fuel supply system. If it breaks down, even an experienced motorist cannot fix it with his own hands. For repairs, contact your nearest car service center and wait for the result. If the unit does not have any malfunctions, the breakdown must be looked for among the elements of the injector and controller.

Tip: in the center of the dashboard on a VAZ-2110 car, a warning light called “CHECK ENGINE” may light up. In this case, the problem definitely does not lie in the control unit, the problem is related to malfunctions in the controller.

So, if you notice that your engine begins to constantly stall while driving and spends more fuel at the same distance as before, refer to the injector diagram for the VAZ-2110. Having a little understanding of each of the elements, you can quickly find the faulty element and replace it.

How to protect the “heart” of a car?

For many car owners, buying a car is a significant event in their lives, and they drive it for decades. Of course, this applies to people with low incomes, and therefore they would really like to ensure that the car and engine do not need repairs for as long as possible. To delay the next engine repair, you need to follow simple rules:

1. Use only high-quality motor oil and change it along with the filter in a timely manner. This mileage is usually 10 thousand km.
2. Change air filters on time, that is, every 35 thousand km. You should also avoid driving on particularly dusty roads, but if this is unavoidable, the filter should be replaced more frequently. This is easy to check visually.
3. Avoid overloading in every possible way, especially during break-in. A good run-in is the key to the “longevity” of the engine.
4. Monitor the instruments that provide basic engine performance indicators: coolant temperature, oil pressure, engine speed.

But the main rule is that you need to love the car and take care of it, not missing anything, and not just the engine, and then it will last a long time! Accident-free driving and good luck on the roads!

DIY radiator frame replacement

The photo shows the inside of the radiator frame. At the final stage of all work, you need to thoroughly treat the bottom of the TV with anti-gravel in several layers. When the TV rots, it can burst as a result of a sharp blow and the motor sags. We received a VAZ car for body repair, the car is more than 10 years old. In this case, it is necessary to change both parts.

2110. Replacing the radiator frame. 1 part

The photo shows the outer part of the radiator frame. The problem was the following: the radiator frame at the bottom was cracked, causing the engine to sag. The arrow under number 1 shows the lower beam. Otherwise, after installing the unpainted frame on the car, we will not have the opportunity to paint the engine compartment side. We drill out the spot weld and cut it off with a chisel.

Before this, the lower beam of the radiator frame was boiled and overcooked more than once. We attach the areas for attaching the daisies by welding, because factory welding does not inspire confidence. In this case, it is necessary to change both parts. Cars of the tenth family, Kalina, Priora, do not have this drawback; they have a slightly different design of the front body panel.

The arrow under number 1 shows the lower beam. When the TV rots, it can burst as a result of a sharp blow and the motor sags. Do-it-yourself car repair VAZ

Cars of the tenth family, Kalina, Priora, do not have this drawback; they have a slightly different design of the front body panel.

The outer part of the radiator frame is attached to the side members and to the inner part of the frame using spot welding. The arrow under number 2 shows the front engine mount mounting bracket. The car arrived to us in this condition.

When the TV rots, it can burst as a result of a sharp blow and the motor sags. The radiator frame on the nine consists of two parts - outer and inner. The arrow under number 2 shows the front engine mount mounting bracket.

We drill out the spot weld and cut it off with a chisel. The outer part of the radiator frame is attached to the side members and to the inner part of the frame using spot welding.

We prime and paint from the inside, that is, from the engine compartment. We try on the new frame on the car, weld it, and clean the weld spots with a grinder. The photo shows the outer part of the radiator frame. Next, you need to putty the welded areas, prepare for painting and paint the radiator frame from the outside. The arrow under number 2 shows the front engine mount mounting bracket. Cars of the tenth family, Kalina, Priora, do not have this drawback; they have a slightly different design of the front body panel.

We drill out the spot weld and cut it off with a chisel.

Tuning

Simple firmware or chip tuning for 124 engines will not change the technical characteristics. To significantly increase power, it is necessary to modify the engine.

• The simplest and most common tuning of the 21124 engine is the installation of sports camshafts, a direct-flow resonator, an increased throttle - in this way you can increase the power to 120 hp. Installing a lighter piston engine can add some power to this. This, at the same time, will reduce the fuel consumption of the VAZ 21124.
• About 150 hp can be ensured by modification of the cylinder head and installation of camshafts with increased valve opening phases.
• Installing a compressor has approximately the same effect; it is installed on eight-valve and sixteen-valve engines.
• Stable engine operation at any speed is ensured by installing four chokes, one for each cylinder. According to popular experience, the most suitable option is to install an injection system from ToyotaLevin. To do this, a set is assembled from the chokes themselves, an adapter manifold, a zero-resistance filter, injectors, an absolute pressure sensor and a fuel pressure regulator. Due to the fact that the speed exceeds the limit, it is necessary to install lightweight piston and wide-phase camshafts. With this modification, engine power can reach 200 hp. But such modernization sharply reduces the service life of the engine, is fraught with frequent breakdowns and the need to carry out serious repairs of the VAZ 124, due to the fact that the engine easily and often spins up to 9,000 rpm.

Installing pistons into liners

Once the rings are installed, the pistons can be inserted into the cylinder liners. To do this, tighten the piston rings with a clamp. We install the liner into the lower head of the connecting rod. In such a way that the lock on the liner fits into the recess of the connecting rod head bed. We insert the connecting rods with the piston into the sleeve until the clamp stops. Taking into account the direction of the piston, and with light blows, preferably using a wooden block, we force the piston into the sleeve. By guiding the lower end of the connecting rod into the crankpin of the crankshaft. After the connecting rod rests against the crankshaft with its liner. We install the connecting rod bearing into the connecting rod cover, and put the cover on the studs. In this case, it is imperative to take into account that the liners on the connecting rod and the cover are located in relation to each other, lock to lock.

We tighten the cover with nuts in two stages. The final tightening must be done using a torque wrench with a force of 42.32-53.51 N*m. Install the remaining pistons in the same way. Always be mindful of their direction in relation to the engine.

Dismantling the cylinder head

You will also need to remove the timing belt - there are no differences between different engines.

Let's look at how the exhaust manifold can be detached from the cylinder head. On engine 21120:

Remove the exhaust pipe of the muffler: unscrew two nuts 1 (key “13”), remove the clamping bar, unscrew six nuts 2 (key “14”) and dismantle, not forgetting to turn off the oxygen sensor. The photo shows three of the six nuts.

Elements of the exhaust pipe

Everything important is under the screen

Now we will talk about engine 21124:

1. Disable both oxygen sensors. We unscrew the three nuts securing the protective screen (with a 10mm wrench) and disassemble the bracket by unscrewing the four nuts with a 13mm wrench.

How to disassemble the mounting bracket

Operation with additional muffler

Here we believed that the VUT hose was disconnected from the intake module. Finally, the spark plugs are unscrewed on any of the engines (a “16” tubular wrench).

The tightening torques for the mounting screws are given in another text. In general, on VAZ-2112 hatchbacks, cylinder head repairs begin by replacing the “extended” screws with new ones. The length should be 95mm or less.

The order of unscrewing (left) and tightening the mounting screws

Engine operating temperature

We have learned the resource, now we move on to another important indicator. The optimal operating temperature is 90-95°C

After 97°C, engine number 126 with 16 valves will “slow down” a little, but according to the rules, temperatures up to 100°C are considered normal. If the Lada unit is operated with this indicator, then you need to be sure that the radiator fan is running at this time. When you see an indicator below +90°C on the dashboard, you need to assume that this is underheating. Of course, in cold weather the power plant needs more time for the temperature to reach normal levels.

• Operating temperature – 90-95°C.
• Normal temperature (engine runs worse) is 97-110°C.
• Reduced temperature – 90°C and below.