The 1.6-liter 16-valve VAZ 21126 engine appeared in 2007 along with the Lada Priora and then spread to almost the entire model range of the Russian company AvtoVAZ. This unit was also often used as a blank for the concern’s sports engines.
The VAZ 16V line also includes: 11194, 21124, 21127, 21129, 21128 and 21179.
- Characteristics
- Description
- Consumption
- Application
- Reviews
- Service
- Breakdowns
- Prices
Technical characteristics of the VAZ 21126 1.6 16kl engine
| Type | in-line |
| Number of cylinders | 4 |
| Number of valves | 16 |
| Exact volume | 1597 cm³ |
| Cylinder diameter | 82 mm |
| Piston stroke | 75.6 mm |
| Supply system | injector |
| Power | 98 hp |
| Torque | 145 Nm |
| Compression ratio | 10.5 — 11 |
| Fuel type | AI-92 |
| Environmental standards | EURO 3/4 |
| Type | in-line |
| Number of cylinders | 4 |
| Number of valves | 16 |
| Exact volume | 1597 cm³ |
| Cylinder diameter | 82 mm |
| Piston stroke | 75.6 mm |
| Supply system | injector |
| Power | 114 - 118 hp |
| Torque | 150 - 154 Nm |
| Compression ratio | 11 |
| Fuel type | AI-92 |
| Environmental standards | EURO 4/5 |
| Type | in-line |
| Number of cylinders | 4 |
| Number of valves | 16 |
| Exact volume | 1597 cm³ |
| Cylinder diameter | 82 mm |
| Piston stroke | 75.6 mm |
| Supply system | injector |
| Power | 136 hp |
| Torque | 154 Nm |
| Compression ratio | 11 |
| Fuel type | AI-92 |
| Environmental standards | EURO 5 |
The online manual for this engine is here
The engine is briefly described in an article on ZaRulem
For such a unit there are also forged pistons
Design features of the Lada 21126 16 valve engine
The main difference between this internal combustion engine and its predecessors is the widespread use of foreign components in the assembly. First of all, this concerns a lightweight connecting rod and piston group manufactured by Federal Mogul, as well as a timing belt with an automatic tensioner from Gates.
Due to the strict requirements of the American company, the manufacturer of ShPG, additional procedures are carried out on the conveyor for processing the surfaces of the block, as well as honing the cylinders. There were also some disadvantages here: new pistons without holes made the power unit plug-in. Update: from mid-2022, the engines received an update in the form of plugless pistons.
Otherwise, everything is familiar here: a cast-iron block, which traces its history back to the VAZ 21083, a 16-valve aluminum head with two camshafts, standard for VAZ products, the presence of hydraulic compensators eliminates the need to adjust the valve clearances.
The video shows the consequences of a broken timing belt and subsequent head repair
The car engine 21126 is a four-stroke four-cylinder engine installed on a VAZ 2170 car. Fuel injection is distributed, the camshaft is located at the top. The VAZ 21126 engine is equipped with a liquid cooling system, closed type, coolant circulation is forced. The lubrication system is combined (spraying and under pressure).
To change gears, the Lada Priora is equipped with a five-speed gearbox.
The 126 engine has the following technical characteristics:
- Cylinders with a volume of 1.6 liters.
- The compression ratio is 11.
- Rated power is 98 horsepower.
- Priora engine 16 valves.
- Fuel is supplied by electronically controlled distributed injection.
- The sixteen valve engine weighs 115 kg.
Cylinder head repair
We mark all hydraulic compensators with numbers using an ordinary clerical touch and put them away. An ordinary magnet will help you pull them out. We dry out the valves and remove the oil seals (valve seals), the valves into scrap metal, the oil seals into the trash. We clean all channels. We take the head for grinding, just in case. After washing it again with kerosene after sanding and blowing it with air, we begin to assemble it.
We arrange the recently purchased valves in the sequence in which they will be located in the cylinder head and begin to grind in one by one. Lubricate the valve stem with clean oil and apply lapping paste to the edge.
We insert the valve into place and put a valve grinding tool on the valve stem. The stores sell a device for manual lapping, but since this is the twenty-first century, we are mechanizing the process. We take the old valve and cut off the rod from it, select a rubber tube for it of such a diameter that it fits tightly. The rod is in a reversible drill, one end of the tube is on it, the other is on the valve being ground in. At low speeds we begin to grind the valve, constantly change the direction of rotation and periodically press it to the seat or weaken the force. On average, the valve takes about twenty seconds. We take it out and wipe it.
The valve is considered ground in if a uniform gray strip of at least 1.5 mm wide appears on the chamfer.
The same stripe should appear on the valve seat.
Video of manually grinding valves
For a sixteen valve head, everything is the same, only there are twice as many valves. After lapping, all valves and seats are thoroughly wiped and washed with kerosene to remove any remaining lapping paste. We check for leaks. We tighten the old spark plugs and put all the valves in place. Pour kerosene and wait three minutes, if the kerosene does not run away all is well, otherwise we grind the valves on this cylinder.
Factors affecting the service life of the VAZ 2170
According to the manufacturer, the ICE 21126 with sixteen valves has a stable operation duration of 200 thousand kilometers. After a certain mileage it is necessary to carry out major repairs. Taking good care of the VAZ 2170, proper maintenance (MOT) and timely replacement of damaged components and parts will lead to a long service life of the vehicle.
Reasons affecting the service life of the power unit:
- Engine overheating. Elevated temperatures of a running engine negatively affect the overall service life of the motor. Maintaining the operating temperature of the power unit elements at a constant level significantly extends its operating time.
- Fuel. The vehicle's owner's manual contains detailed information about the recommended brand of gasoline. Filling the 16-valve Priora engine with fuel must be of proven quality.
- Machine oils. Which oil is best to fill, its brand and how much lubricant is needed is indicated in the accompanying documentation for the car. The 126 sixteen valve engine accepts semi-synthetic and synthetic motor oils most well. A complete oil change should be carried out annually or after a mileage of 15 thousand kilometers.
The optimal operating engine temperature is 90 - 95 °C. The rules allow the power unit to operate at temperatures reaching up to one hundred degrees, provided that the radiator fan is running. The engine temperature is considered low if it is below +90°C. In cold weather, it takes more time to warm up the engine to the desired mark on the device.
When servicing your VAZ 2107 car, the car owner can change the oil with his own hands. To do this, you need to know how to drain used lubricating fluid, what kind of oil to pour into the Priora and how much engine oil to pour into the neck.
Are the valves bending?
In Lada Priora cars, even in a 16-valve 126 power unit, valves can often bend. The reasons causing this defect lie in non-compliance with operating rules, in case of violation of the regulations for replacing the following components and parts:
- rollers;
- timing belt;
- water pump.
If one of the listed components breaks down, the pistons, exerting mechanical stress on the valves, can bend them. The design features of the engine are the reasons why the engine can bend valves. Deformation of the valves necessitates a major overhaul of the Priora engine.
To avoid this defect, the car owner needs to timely check the timing elements. Of particular importance is the belt, which is subject to thorough inspection after 50 thousand kilometers. When checking, the following faults are excluded:
Why does the engine stall?
Frequently encountered breakdowns of this power unit include such defects as unstable operation and engine tripping. Such failures occur due to malfunctions in engine components and parts:
- decrease in fuel pressure;
- defects in gas distribution mechanism elements;
- sensor malfunctions;
- violation of tightness in hoses;
- faulty throttle valve.
The power of the power unit is reduced for the following reasons:
- low compression in one or more cylinders;
- burnout of gaskets;
- wear of cylinder walls;
- erasing piston rings;
- deformation of pistons under the influence of high temperatures.
Engine friction can be eliminated by flushing the injectors. The reasons for unstable operation of the power unit may lie in the malfunction of the following devices:
- spark plugs for Priora 16 valves;
- ignition coil;
- throttle valve;
- idle air control;
- battery;
- starter;
- ignition coil;
- gasoline pump;
- fuel filter;
- fuel pressure regulating device.
You can replace the spark plugs on Priora yourself. To do this, you need to familiarize yourself with the principles of correct selection and replacement of these nodes, described in special articles on the Internet.
Malfunctions
Despite various upgrades, the engine in the VAZ 21127 retained all the faults of its predecessor, the main ones of which are shown in the table:
| FAULT | CAUSE |
| The engine starts to stall | Coking of injectors. |
| Malfunction of ignition coils. | |
| Reduced compression. | |
| Cooling system overheating | Thermostat malfunction. |
| Formation of a mud coat as a result of oil leakage. | |
| Knocks and noises at the top of the engine | Malfunctions of hydraulic valve compensators |
| Knocks at the bottom of the engine | Main bearing wear |
| Knocks in the middle of the engine | Connecting rod bearings and piston pin faults |
| Bend cylinder head valves | Belt drive slipping through gear tooth |
| Interruptions and startup problems | Violations in the operation of the timing belt. |
| Malfunctions in the fuel pressure system. | |
| Air leak. | |
| Broken throttle valve. | |
| Sensor malfunction. | |
| Power reduction | Burnt out timing head gasket. |
| Burnout of pistons, wear of rings and cylinders. |
Priora engine tuning
To improve the power performance of the Priora power unit, they resort to the following modifications:
- The receiver is installed.
- Exhaust pattern: 4-2-1.
- Throttle valve: 54 -56 mm.
- Sports camshaft.
- Modification of the cylinder head (cylinder head) by sawing.
- Lightweight valves.
- 440cc type injectors.
In addition to the considered method of transforming the power unit to increase dynamic performance, there are several more ways to tune a car of this model.
Four-cylinder internal combustion engines of the 126 series are installed on Lada Priora cars and their modifications produced by the famous AvtoVAZ company. The 126 engine belongs to the category of four-stroke engines, is equipped with a distributed fuel injection system, the camshaft is located in the upper part. The power unit is equipped with a liquid cooling system. Coolant circulates inside a closed system under pressure. The functioning of the 21126 motor lubrication system is based on splashing and supplying fluid under pressure.
Where to look for the cause of a non-working cylinder
The remark is that the check and search for the cause are carried out in a garage. There are two options: mechanical and electrical (ignition). You need to start taking the easy path, namely with ignition diagnostics.
- Spark plug. We determine their performance the old fashioned way. Visually, the side electrode and insulator should be light brown, but not black with soot flakes. A sooty electrode indicates either that the mixture is too rich or that it is splashed with oil. Sparking. Having inserted the spark plug into the explosive wire, bring it at a distance of 1-2 cm to the cylinder block and crank it with the starter. If the spark “jumps” this distance, then the spark plug is ok, if not, then we change it.
- High voltage wires. We check them for mechanical damage. We check their tips. If there is a light gray coating on the tip of the explosive wire, this indicates its operation in extreme mode. The resistance of explosive wires is checked with a multimeter. Different engines have different lengths of explosive wires and different resistances. Unless otherwise stated, 20 Kom is considered to be a constant resistance value. If the resistance is higher, you need to look for the cause in the explosive wire.
- Distributor. If the spark plug is faulty, then we will see a “breakdown” in the ignition distributor cap. Be sure to check the “coal”, you can stretch the spring a little.
- The explosive wires are simply mixed up. And it is precisely because of this that one or two cylinders do not work.
Next we move on to mechanics.
- Injector. It is quite possible that one cylinder is not working due to problems with the injector. This is either a malfunction of the injector itself, or the injector is clogged with low-quality fuel, or rather, because there is a lot of fuel in it. By the way, be careful and picky when using the “super-miracle” fuel purifiers that are sold on every corner. Ideally, diagnostics and cleaning of injectors should be carried out on a bench.
- Timing belt Fuel - the air mixture enters the cylinders in the wrong quantity and quality. There are a lot of reasons here. The belt is installed incorrectly, the tensioners are worn out, the seal is worn out. The camshaft is worn out, hydraulic compensators are worn out. A blown cylinder head gasket is usually due to engine overheating (look carefully at yourself when you want to ask why it overheated) during sporty driving, or a decrease in coolant level.
These are the traditional reasons why one cylinder of the engine does not work. And this is still an incomplete list. In any case, searching for the cause will lead you to the desired result, and you will eliminate this malfunction. On your own or with the help of a service.
Good luck identifying the cause and correcting the failed cylinder.
Engine Features 126
The development of the 21126 internal combustion engine was carried out in parallel with the VAZ-21124 internal combustion engine. With different working volumes of the models, a large number of coincidences were noted for the incoming systems and nodes. The main task before the creators of the 21126 engine was to obtain the most durable mechanism, characterized by a long service life.
The elements of the connecting rod and piston group were developed by Federal Mogul. The company's engineering team created a design that compares favorably in weight (30% lighter) with a similar kit installed on the 2110 machine.
In terms of external parameters, the engines of variants 124 and 126 are very similar, but there are certain differences between them. What is the difference between a 124 engine and a 126:
- The pistons of the 126 engine have less mass.
- The height of the block is 197.1 mm, while the diameter of the cylinders themselves has not changed.
- The inner walls of the cylinders are processed by honing using high technologies from Federal Mogul, which significantly improves their quality in comparison with analogues.
- The piston rings and pins are reduced in thickness, which also helps improve the power and speed characteristics of the motor (torque, efficiency, etc.).
- The cylinder block of the 126 engine is painted in a characteristic gray color, making it easy to distinguish from the 124 model.
In the Priora 126 engine, the ducts of the cylinder cooling jacket run along the entire height of the block. With this arrangement of channels, the degree of deformation of the body part is significantly reduced due to uneven exposure to ultra-high temperatures.
Important: Cars equipped with a 126 engine pick up speed faster. When tuning yourself, it is recommended to install brake system elements (pads, air-vented discs) that have the best quality and greatest efficiency.
One cylinder is not working, what should I do?
“Engine trouble” is the name given to a malfunction when one cylinder in the engine does not work. There are times when two cylinders do not work at once. But this happens very rarely. Therefore, let us consider in detail the situation when one cylinder does not work.
Moreover, the causes of the malfunction, their search and elimination, equally apply to the situation when two cylinders do not work.
By what signs do you know that one cylinder of the engine is not working? It's simple. Based on body vibration, interruptions in the work cycle and a strange sound that differs from the smooth operation of the engine. You will understand. If the engine is running rough, you can’t help but notice it in the car’s behavior.
Does engine 126 bend valves?
When choosing a new or used car, buyers often have a natural question whether the VAZ 126 engine bends the valve or not. All models equipped with internal combustion engines: Priora, VAZ 21126, 21116, 21127 suffer from a common drawback - when the timing belt breaks, the valves are deformed , and damage to the piston group also occurs.
Interesting: The VAZ 21124 engine is the only model that does not suffer from this problem. The 124th engine was installed on cars of the cheapest standard versions. In the modern version, the Priora 124 power unit has been replaced by the 116th model from Lada Granta.
Exceptions
Lada Priora with 16 valves has characteristic features of the location of the code, which can be used to decipher the engine. If you can’t find the desired combination in standard places, then look here:
- right wing front;
- body bottom;
- in the cabin near the driver's seat.
The location may vary depending on the newness and model of the vehicle manufactured by AvtoVAZ. However, it’s worth finding it and knowing the location in advance. This will save time later if you are stopped by State Traffic Inspectorate employees and asked to present documents and show the engine number. Knowing where the markings are located will help you avoid problems.
It is best to find out the code when purchasing a car. This is an excellent opportunity to independently see the identity or discrepancy of the numbers on the engine and in the documents. If there is a match, you can make sure that you are buying a car that is not listed as stolen.
Differences between engines 126 and 127 models
AvtoVAZ Corporation periodically introduces innovations into the design of its vehicles. Some models began to be equipped with a modern VAZ 21127 engine. Its design is based on the previous version 21126.
The main differences of the new engine:
- The presence of a so-called resonance chamber in the intake system.
- Engine power is 106 hp. s., maximum torque – 148 N.m
- Instead of the usual MAF oxygen sensor, the design includes sensors that reflect air temperature and absolute pressure.
- Thanks to the operation of new devices, the engine does not suffer from floating speed at idle.
- The timing mechanism drive is equipped with a special device that ensures belt tension automatically.
One of the main disadvantages of the 21127 engine is the high probability of valve deformation when the timing belt breaks. Another serious disadvantage of the new engine is expensive repairs, regardless of the location of the repair and restoration work. This is due to the high cost:
- a set consisting of a timing belt, an automatic tensioner and a pulley, produced by the well-known foreign company Gates;
- piston group elements from Federal Mogul.
Important: The VAZ 21127 engine does not work well at low temperatures. Experienced drivers recommend protecting the radiator of the cooling system in cold weather using ordinary cardboard.
People help, there is a problem with the VAZ 211440, the 3rd cylinder is missing
October 8, 2011, 12:55 #1
The car turns off cylinder 3
I have already changed: spark plugs, wires, ignition module, injectors, sensors, brains, fuel pump, valves on cylinder 3.
The machine also crashes, when resetting the errors from the BC, the machine runs for 15-40 seconds and crashes again.
HELP who will say what?
Car VAZ 211440
October 8, 2011, 13:04 #2
tema86 rus, October 8, 2011, 12:55
We'll have to wait. There are several specialists here. But probably not right away
October 8, 2011, 16:22 #3
Serega_karel, October 8, 2011, 13:04
We'll have to wait. There are several specialists here. But probably not right away
Well, I hope I won’t wait long
Republic of Dagestan, Khasavyurt
October 8, 2011, 19:39 #4 + 2
tema86 rus, October 8, 2011, 12:55
The car turns off cylinder 3
I have already changed: spark plugs, wires, ignition module, injectors, sensors, brains, fuel pump, valves on cylinder 3.
The machine also crashes, when resetting the errors from the BC, the machine runs for 15-40 seconds and crashes again.
HELP who will say what?
Car VAZ 211440
that is, I changed everything but the 3rd cylinder does not work, it doesn’t happen..
1) CHECK the compression of all cylinders
2). Which spark plugs have a spark leak? If all of them do, that means only the injectors are left.
Do the cords from the injector short to ground?
Chevrolet Lacetti Station Wagon
October 8, 2011, 20:02 #5
If there is a misfire at idle, there may be air leaks in the intake manifold; the exhaust valve does not fit tightly, and if you listen, there should be a whistle under the valve cover. if when driving under load, misfire may occur due to a lean air-fuel mixture and the above.
Republic of Dagestan, Khasavyurt
October 8, 2011, 20:10 #6
SERGE, October 8, 2011, 20:02
If there is a misfire at idle, there may be air leaks in the intake manifold; the exhaust valve does not fit tightly, and if you listen, there should be a whistle under the valve cover. if when driving under load, misfire may occur due to a lean air-fuel mixture and the above.
correct, but air leaks affect stable idling, but should not fluctuate when accelerating
October 8, 2011, 21:27 #7
compression is everywhere. spark comes too. Here it turns out that the car runs for 10-15 seconds, then blinks. Check starts to rub the car, it rubs, the voltage disappears almost completely on the 3rd injector. if I erase the error code the machine still works for 10-15 seconds
October 8, 2011, 21:28 #8
master05, October 8, 2011, 19:39
Do the cords from the injector short to ground?
Is it possible to look at the cords from the injectors?
Lada Priora all road, 4+4, automatic
October 8, 2011, 21:30 #9
looks like injectors...you can also measure the pressure in the fuel line, or maybe the valve is burnt out
October 8, 2011, 21:34 #10
tema86 rus, October 8, 2011, 12:55
The car turns off cylinder 3. I have already changed: spark plugs, wires, ignition module, injectors, sensors, brains, fuel pump, valves on cylinder 3. The machine also crashes, when resetting the errors from the BC, the machine runs for 15-40 seconds and crashes again. HELP someone say what Car VAZ 211440 2010. 72 t. mileage 1.6 8 valve engine
I have already mentioned this more than once, but I think it will not be superfluous. Brother has a Kalina 1.6 8 cl, Troilus both cold and hot, it turned out that there was an air leak through the sealing rubber of the injector, changed it and how the grandmother whispered. The injectors were sweaty, one even had gasoline leaks. Perhaps your case.
Lada Kalina 11184 luxury
October 8, 2011, 21:40 #11
Doberman_54, October 8, 2011, 21:34
I have already mentioned this more than once, but I think it will not be superfluous. Brother has a Kalina 1.6 8 cl, Troilus both cold and hot, it turned out that there was an air leak through the sealing rubber of the injector, changed it and how the grandmother whispered. The injectors were sweaty, one even had gasoline leaks. Perhaps your case.
I would write it. But everything...is obviously in good order. What I mean is that almost everything has been replaced.
