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Soon, the factory designers of the German automaker Volkswagen will have more work to do. A solid and expensive Jetta is catching up with its “brother” (almost a twin) - a budget Polo in a sedan. Just look how much the front part of the "state employee" copies the full face of an adult and serious "businessman". From afar, it will be difficult to unravel. The first guess will come to mind as soon as the shape of the head optics becomes discernible. The Jetta has a more businesslike look. The Polo sedan, on the other hand, is from the “blue collars”, his gaze awaits the order. However, the "increase" is not far off.

The first serious "pumping" was in the late spring of 2015. At that moment, the car, although it carried the features of a practical and pedantic German, but judging by its appearance, it was still a “newcomer” mastering the world around him. On the other hand, under the hood of the "trainee" rested not so immature opportunities. To say that “Polik” of the 2015 model ate little porridge is to be cunning. Two strong reliable motors with powers of 85 and 105 hp. - quite impressive figures. Not every "state employee" is able to accelerate to "hundreds" in 11.9 seconds!

Then in the fall, the German manufacturer showed a restyled version of the Volkswagen Polo sedan in Frankfurt. The jump was amazing. The car made most competitors, flaunting lower price tags (like, for example) and a more developed set of salon equipment (like), respect themselves.

Both rivals and another influx of consumers liked the new bumpers, grille, trunk lid and LED headlights. Inside, it became possible to enjoy the silence - the Germans took into account the feedback from the owners of the old versions of the Polo sedan and the car. In the cabin, you can also feel more and turn the new “steering wheel” inherited by the “state employee” from the last Golf. Just think: already on the basic version, two airbags, ABS, power windows on all doors, central locking and an on-board computer are available! Competitors will have to think.

But the most important change that affected the Kaluga assembly affected the E211 series CFN gasoline engines. The 90-horsepower 1.6-liter internal combustion engine has a torque of 155 Nm and a top speed of 178 km/h. The car accelerates to “weave” in 11.2 seconds, and for every 100 kilometers it takes about 5.7 liters of fuel in mixed mode. If you add a 5-speed manual transmission to 90 “horses”, you get, which currently costs 579,500 rubles.

Features of the new motor

In a 110-horsepower installation, the torque factor is the same as that of the “younger” version - 155 Nm, but the “maximum speed” reaches 191 km / h. At the same time, on the "mechanics" the car can really be accelerated to 100 km / h in 10.4 seconds. But the Polo sedan rides slower than the old modification - 11.7 seconds. Well, the consumption, of course, is slightly higher for the “automatic” - about 5.9 liters versus 5.8 for the manual transmission.

As for the standard 90- and 110-horsepower CFN engines of the new series, the aluminum cylinder head became the basis for the modernization. Thanks to its improvement, warming up the engine during a cold start has become better, as well as heating the cabin. The lighter weight of the connecting rod, crankshaft and the block itself helped to reduce the amount of CO2 emissions.

The rest of the engine components remained unchanged. The intake manifold is made of polymers that can withstand high temperatures. Installed on the cylinder head without extra gaskets. The ignition system is a standard modern non-contact coil with four candles. The oil pump has a pressure sensor that can be adjusted. Control over fuel injection and its further distribution is carried out by electronics. All components of the internal combustion engine are held on three rubber pads.

The main problems in the motor part that the Kaluga sedan faces are associated with chafing of the throttle sensor wires, bursting of supports, deterioration of the injection system (due to the use of bad gasoline), strong detonation that destroys hydraulic lifters and failure of the crankcase ventilation valve.

The resource of the "engine" for all models is different, since it depends on the degree of operation, driving style and care of the car. On average, dealers give a figure of 500,000 km. However, the resource indicator can be significantly increased by timely oil changes and proper engine break-in when buying a new car.

The German manufacturer recommends changing engine oil every 15,000 km. But we don't live in Europe! On our dusty roads with endless traffic jams and dirty air, it is better to drain the used fluid at around 8000 km.

The selection of oil for novice motorists is always difficult. It is better for unprepared beginners not to go into a store with a sign "Motor oils" - your head will spin from the number of brands and manufacturers. Experienced experts on the forums can help with the selection of the right oil. Novice politicians often turn to "network experts" with a question about the model of engine oil, its viscosity and other parameters.

You can choose the oil yourself. Naturally, having gone through the resources of the Internet. Sites that help you find the right brand online are dark and dark. The main thing in such a selection is to know the engine number.

Usually, the engine and body number is indicated in the documents for the car. It is a letter designation in the form of a code. However, you can find information about the number of the power plant under the hood of the car. On the Kaluga sedan, the engine code and its serial number are located on the cylinder block under the thermostat housing. In order not to look for a long time, just look at the toothed belt guard. If the dust has not completely buried the sticker under it, then both numbers can also be seen on it. The last search option is to look at the identification plate with the VIN code and car model. The number designations found will give a 100% guarantee of the correct selection of spare parts, "consumables" and original engine oil for replacement.

In automotive stores, sellers can also tell you what kind of oil you need to fill in a car. But in this case, it’s not worth rushing with a choice, because the skillful hands of merchants are able to “suck in” without problems. Perhaps the imposed oil model will correspond to the engine number and its characteristics, but you will have to pay twice as much for it than when buying a cheap analogue.

Another bleak side of such a selection is the acquisition of low-quality goods. Unfortunately, the Russian auto chemical goods market is replete with various kinds of fakes. So even if you, together with an engine number consultant, find the right canister, it is not a fact that it will be filled with a good working fluid that meets state standards.

Those owners of the Volkswagen Polo sedan, who are not the first time choosing oil, know that for a certain brand. Therefore, the general recommendation is to fill in the composition that was originally used in the motor.

Among the original oils produced by the manufacturer, there are four types of tolerance: VW 501 01, VW 502 00, VW 503 00 and VW 504 00 (according to ACEA A2 or A3). In addition to them, you can fill in analogues - Shell Helix Ultra 5W-40, Castrol Magnatec Professional B4 SAE 5W-40 or Castrol SLX Professional B4 SAE 5W-30. There are good reviews for these brands both from ordinary owners of the Polo sedan and from representatives of the Kaluga plant, who use Castrol oil in production. The original synthetic solution Special plus SAE 5W-40, which is used on most modern Volkswagen models and the competing concern Audi, will also guarantee the excellent operation of the “engine” of a German car.

When self-selecting a working fluid, an important criterion is its viscosity. The standard that you need to pay attention to when buying is 5W-30 or 5W-40. Oils with these parameters are more actively in demand among ordinary motorists than others, as they are universal all-weather models. In winter, the extreme temperature mark for starting the engine of the Polo sedan will be at about -35 degrees. The values ​​\u200b\u200bof "30" or "40" - here each polologist chooses for himself. The higher the indicator, the thicker the oil in the reservoir. Here, the owners of the Polo sedan can experiment without serious consequences for the motor. For those who prefer to buy only original parts, code numbers: 03C115561H for the filter and N90813202 for the plug may come in handy. But those who count every penny can choose a good analogue for themselves by the engine number.

The engine life of any car that has just been rolled off the assembly line is affected by its running-in. You will not find information on this procedure in the operating instructions for the Volkswagen Polo sedan. This is because every Polik undergoes a mandatory engine run-in after assembly at the factory. Therefore, new sedan buyers do not have to comply with the rules for the first kilometers of run.

However, if you ask the “officials” about the engine break-in, the answer will be something like this: 1500 km with a speed of no more than 3000. These are not empty numbers. It is these data that are indicated by the German representatives of the plant for the hatchback of the same name. An important advantage for the owners of a new car will be the exact fuel consumption, which, with proper break-in, will correspond to the data declared by the manufacturer.

1. Try not to allow sudden acceleration of the car.
2. Do not overload the "engine" - accurately select the gear.
3. The mileage of the procedure can be doubled up to 3000 km at a speed of no more than 3000.
4. Use only 95th gasoline (and even better 98th).
5. At the end of the procedure, the oil must be changed.

Restyled power units with capacities of 90 and 110 "horses" and a modernized cylinder head designed from aluminum are a big step forward of the Kaluga plant, giving a great advantage to the German "state employees" over competitors. In order not to lose it, car owners should carefully approach the main points for caring for the "heart" of the "iron horse": carefully select engine oil (you can do this without problems by engine number), change it more often (every 8000 km), and also comply with the important break-in conditions. Then the two-year warranty issued for the Polo sedan will become only the initial mark in the operation of the power apparatus.

Volkswagen Polo Sedan 1.6 engines

Engine specifications CFNA/CFNB/CWVA/CWVB

Production	Chemnitz engine plant Kaluga plant
Engine brand	CFNA/CFNB/CWVA/CWVB
Release years	2010-present
Block material	aluminum
Supply system	injector
Type	in-line
Number of cylinders	4
Valves per cylinder	4
Piston stroke, mm	86.9
Cylinder diameter, mm	76.5
Compression ratio	10.5
Engine volume, cc	1598
Engine power, hp / rpm	85/5200 90/5200 105/5250 110/5800
Torque, Nm/rpm	145/3750 155/3800-4000 153/3800 155/3800-4000
Maximum revolutions, rpm	6000
Fuel	95-98
Environmental regulations	Euro 5
Engine weight, kg	—
Fuel consumption, l/100 km (for Polo Sedan CFNA) - city - track - mixed.	8.7 5.1 6.4
Oil consumption, g/1000 km	up to 500
Engine oil	0W-40 5W-30 5W-40
How much oil is in the engine, l	3.6
Oil change is carried out, km	7000-10000
Operating temperature of the engine, hail.	85-90
Engine resource, thousand km - according to the plant - on practice	— 200+
Tuning, HP — potential - no loss of resource	150+ n.a.
The engine was installed	VW Polo Sedan VW Jetta Skoda Fabia Skoda Octavia Skoda Rapid Skoda Yeti Skoda Roomster
checkpoint — 5MKPP - 6 automatic transmission	VAG 02T Aisin 09G
Gear ratios, 5MKPP	1 — 3.46 2 — 1.96 3 — 1.28 4 — 0.88 5 — 0.67
Gear ratios, 6 automatic transmission	1 — 4.148 2 — 2.37 3 — 1.556 4 — 1.155 5 — 0.859 6 — 0.686

Reliability, problems and engine repair Polo Sedan

The most popular representative of the VW EA111 series in Russia under the CFNA index appeared in 2010 on a Polo Sedan car and sold hundreds of thousands of copies only in the CIS. What is this motor? This is a conventional in-line four in an aluminum cylinder block with thin (1.5 mm) cast-iron liners, with a long-stroke crankshaft of 86.9 mm and a cylinder diameter of 76.5 mm.
Above is a 16-valve cylinder head with two camshafts and hydraulic lifters. In general, the CFNA engine is completely similar to the BTS engine, but differs from it in the absence of a variable valve timing system on the intake shaft, as well as other Magneti Marelli 7GV ECUs (Instead of Bosch Motronic ME 7.5.20). The timing drive uses a maintenance-free chain, its resource is designed for the entire period of operation.

The CFN engine is available in 2 versions: CFNA and CFNB. The first is a 105 horsepower motor, the second is 20 horsepower. weaker (85 hp) and differs only in a different firmware.
CFNA / CFNB engines are assembled in Germany, at the Chemnitz plant.

Volkswagen CFNA and CFNB motors are still in use today, but in 2015 a new Polo Sedan appeared with a 110 hp engine, the name of this motor is CWVA, and the purpose is to replace CFNA. Together with him, a 90-strong CWVB appeared, which replaced the CFNB.
These engines are part of the EA211 family and feature a 180° cylinder head (intake ahead) with integrated exhaust manifold, intake shaft phase shifter, redesigned cooling system, maintenance-free timing belt drive, and Euro 5 emission compliance. Such a motor was designated CWVA, and its power increased to 110 hp. at 5800 rpm. The younger version of CWVB, by analogy with the previous generation of CFNB, is a programmatically strangled version, otherwise there is no difference between CWVA and CWVB.
These engines are assembled for the Polo Sedan in Kaluga at the VAG plant.

In the CIS, Volkswagen Polo Sedan is a well-known and fairly popular model. The modern design and well-thought-out solutions of the German concern Volkswagen allowed the budget sedan model to quickly get into the list of real bestsellers. As you know, this car is assembled in Kaluga and for quite a long time it was produced with two reliable engines with a capacity of 85 and 105 hp.

However, after restyling, fans of the model were in for a real surprise, since in addition to new bumpers, a radiator grill, a trunk lid, improved sound insulation, a Golf steering wheel, LED headlights and a number of other improvements, the changes also affected the engine. Let's dwell on this in more detail.

Read in this article

Russian Polo Sedan engine

So, the new Volkswagen Polo Sedan, as before, is a model of the Kaluga assembly, which received improvements, including the engine. We are talking about the CFN motor of the E211 series. We note right away that the new power unit has become even more powerful and more economical. At the same time, it is also noteworthy that the affordable sedan will receive units manufactured at a plant in Kaluga.

As before, the engine with a displacement of 1.6 liters has two stages. Only now it is no longer 85 and 105 “horses”, but 90 and 110 hp. In the first case, it is 155 Nm, the maximum speed is 178 km / h, acceleration to hundreds is 11.2 seconds. Fuel consumption in mixed mode is 5.7 liters. The more powerful 110-horsepower version also has a similar torque, while the maximum speed is already 191 km / h. Acceleration to hundreds on the version with a manual transmission is 10.4 seconds.

As for the Polo sedan on the machine, with the new engine, the car accelerates more slowly than the previous modification. Acceleration takes 11.7 seconds. The consumption is also slightly higher, which is 5.9 liters, but for an automatic transmission this is quite expected.

We also note that the Germans also offer a sports version of the Polo. We are talking about the Polo GT, which will receive a 1.4-liter 125 hp. Also, this car will be equipped with a 6-speed robotic gearbox.

Let's get back to the engine. The new Polo engine, more precisely, its 90 and 110 hp MPI versions, have become more modern and environmentally friendly. The main feature of the upgraded versions of the CFN is aluminum. Improvements made it possible to speed up the warm-up of the motor, and the stove also starts to work faster and more efficiently.

The sedan also received an extended package, which involves improved preparation for winter conditions, which allows you to realize confident and stable down to -30 and below.

Other parts and assemblies have not received any major changes. actually plastic, while easily withstands high temperatures. The ignition system is non-contact, the oil pump has a pressure sensor, it is possible to configure it.

As for the resource, dealers are voicing a figure of 500,000 km. However, it should be understood that break-in, the quality of fuel, engine oil and service, as well as operating features are those factors that can greatly affect the resource indicator, both for better and for worse.

You also need to pay attention to the issue and other parameters if the owner, for one reason or another, does not want to use the product that the official dealer offers as part of the vehicle service.

Naturally, as in any other case, the resource of any motor will greatly depend on the first kilometers. We are talking about compliance with all recommendations and regulations. In this case, the Polo Sedan is no exception. And do not rely on the declared 2 or 3 year warranty.

We go further, for an accurate and correct selection of "consumables", the engine number and its marking will greatly help. On a sedan from Kaluga, the serial number is located on the cylinder block under the body. Since the internal combustion engine is new, such information greatly facilitates the selection of engine oil, original spare parts or substitutes from catalogs.

By the way, when choosing oils for this model, it is important to pay attention to the viscosity, which should be 5W30 or 5W40, as well as tolerances. The oil must be approved VW 501 01, VW 502 00, VW 503 00, VW 504 00. ACEA A2 or A3 standard.

As for the manufacturer itself, some sources contain information that Castrol oil is poured into the Polo sedan engine at the factory. To change the oil, you need to buy about 4 liters, the manufacturer himself recommends pouring 3.6 liters into the engine, and the remainder can be stored for topping up. This also needs to be monitored, as it can cause certain problems.

There is also information that the power units undergo the so-called "cold run-in" of the engine directly at the factory. Managers in car dealerships emphasize that it is for this reason that motors do not need additional running-in. However, in practice, experts pay attention to the fact that the engine, even the most modern one, still needs to be run in.

The rules are quite simple: avoid warm-up driving, hard starts, active braking, constant speed and revs, high gears, too high and too low revs, driving uphill in high gear, engine braking, towing a trailer etc.

In other words, during the break-in it is not necessary to “load” the engine for at least the first thousand km. Also, after the first thousand, the oil and oil filter must be changed, and always use high-quality gasoline not lower than AI-95. Further, the next oil change is expected at 3 thousand km, and the mark of 10 thousand km can be considered the complete completion of the break-in. After that, the oil is changed again, and the engine can then be gradually loaded further.

What is the result

As you can see, if we talk about the Volkswagen Polo Sedan model, the engine after restyling has become more powerful and lighter. Thanks to the modernized cylinder head, which is cast from aluminum, as well as a number of other improvements, this engine is a real technological breakthrough for the plant in Kaluga and can rightly be considered an internal combustion engine made in the Russian Federation.

In practice, the pre-styling version has shown itself to be a worthy competitor for other brands and models on the market, which also promises success and increased demand for the updated version of the Polo.

Finally, we note that, like any other car, the Polo sedan has its pros and cons. As for previous versions of the CFN engine, frequent knocking of pistons on a cold one was noted. Also, drivers were faced with the fact that the wires of the throttle sensor were chafed, cracking, there were problems with crankcase ventilation and the valve of this system was “sticking”.

Another common complaint is problems with the power system. At the same time, violations in the operation of the injector and the appearance, as well as the knock of hydraulic lifters, can not always be considered a disadvantage of the engine, since the main reason is the quality of fuel and oil, as well as unscrupulous maintenance.

It is also important to understand that other competing models have, to a greater or lesser extent, certain and often similar problems. However, Volkswagen in many cases takes into account certain shortcomings, finalizing their engines. This means that the new CFN E211 engine on the Polo Sedan may well turn out to be a successful and reliable engine that is devoid of many of the shortcomings and “diseases” of its predecessor. However, the strengths and weaknesses of this internal combustion engine will be revealed only by practical operation.

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FSI family engine: differences, features, pros and cons of a power unit of this type. Common FSI engine problems, engine maintenance.

Motors of the TSI line. Design features, advantages and disadvantages. Modifications with one and two superchargers. Recommendations for use.

Restless German or Volkswagen Polo sedan engine resource. As you understand, today we will talk about the next masterpiece of the German concern - the Volkswagen Polo with its next restyling. The brand, in fact, like the model, is not new, but with a long-term positive reputation and a wide range of fans. Europeans and residents of the countries of the post-Soviet space have long been accustomed to unconditionally trust the German product, which does not need to be carefully introduced.

The main characteristics of the car are engine reliability and serviceability. About how the traction element is equipped, its features, and we will consider it step by step below.

Distinctive features of CFNA engines

The resource of the Volkswagen Polo sedan engine will directly depend on the timely, despite the fact that it is designed for 500 thousand km. run. So, the gasoline engine is a four-cylinder device with a capacity of 105 horses and a volume of 1.6 liters of the CFNA type with a 16-valve mechanism.

The camshaft system is made using DOHC technology. For convenience and quick finding of various nodes, the latter are highlighted in a separate color. All this together allows you to show consumption in the combined cycle no more than 7.0 l / 100 km.

CFNA Technology

What is a Volkswagen engine?

• intake manifold made of refractory polymer material;
• mounted on the cylinder head, no interlayers or gaskets;
• the entire cylinder head complex is made of aluminum alloy;
• the ignition system is presented in the form of contactless ignition with four coils;
• variable valve timing on the intake valves;
• forced circulation of the oil pan;
• an adjustable pressure sensor is installed in the oil pump;
• electronic fuel distribution control system;
• the mounting system consists of three cushions made of durable rubber, which confidently dampen various vibrations and vibrations.

The order of work at the next maintenance

(banner_content) Factory engineers strongly recommend an inspection every 15,000 miles. with mandatory computer diagnostics of all components and assemblies, as well as the replacement of such elements:

• oil filter element;
• pan caps.

For owners of new cars, the recommendation is of such a nature that up to 1.5 thousand km. the motor consumes an increased oil level and this is permissible by the manufacturer, so monitor the level and top up systematically. If this continues after the specified period, then contact the car service to qualified specialists for prompt intervention.

On a run of 30,000 km. in addition to the previous procedures, it is necessary to supplement the regulations with the following: replacing the air filter, filling in lubricating fluid type 5W-30 in the amount of 4.0 liters. In addition, pay attention, the color of the insulator can tell a lot, for example, about the composition of the combustible mixture, oil ingress, increased oxygen pressure and other points. A similar list must be carried out every 30,000 km. run.

Everything would be fine, the motor is like a motor, if it were not for the knock of the engine on a cold one. A lot of CFNA motors start knocking before reaching a hundred thousand kilometers, and in some cases a defect occurs already in the first 30 thousand.

Be careful when buying. A common problem is progressive knocking after a cold start.

Polo Sedan Engine - CFNA

At one time, the entry into the Russian market of the Polo Sedan model costing from 399 tr. (!) became a sensation and was considered an achievement of the Volkswagen concern. Still would! To get Volkswagen quality for that kind of money is a dream of many. But, as often happens, the low price had a bad effect on the quality of the product - the Polo Sedan engineCFNA 1.6L 105 HPwas not as reliable as expected.

CFNA 1.6 engine was installed not only on the Polo Sedan, but also on other models of the Volkswagen group, including those assembled abroad. From 2010 to 2015, this motor was installed on the following models:

• Volkswagen
  • Polo Sedan
  • Jetta
  • Vento
  • Lavida
• Skoda
  • Rapid
  • Fabia
  • roomster

If you do not know which motor is installed on this particular car, then you can find out by its VIN code.

CFNA motor problems

The main problem of the engineCFNA 1.6 is an knock on cold. First, the knock of the pistons on the cylinder walls is manifested by a slight tinkling in the first minutes after a cold start. As the piston warms up, it expands, pressing against the cylinder walls, so the knock disappears until the next cold start.

At first, the owner may not attach any importance to this, but the knock progresses and soon even an inattentive car owner realizes that something is wrong with the engine. The very appearance of a knock (piston hitting the cylinder wall) indicates the beginning of the active phase of engine destruction. With the advent of summer, the knocking may recede, but with the first frost, CFNA will start knocking again.

Gradually, the CFNA engine knock "on cold" increases its duration, and one day, it remains even after the engine has warmed up.

Engine knock

The knock of the engine piston against the cylinder wall occurs when the pistons are shifted at top dead center. This becomes possible as a result of wear of the pistons and cylinder walls. The graphite coating on the skirts quickly wears down to the metal of the piston

In places where the piston rubs against the cylinder walls, significant wear occurs

Then the piston metal begins to hit the cylinder wall and then scuffs appear on the piston skirt.

And on the cylinder wall

Despite the large number of complaints, the Volkswagen concern over the years of production CFNA engine(2010-2015) never declared a revocable company. Instead of replacing the entire unit, the manufacturer performs piston group repair, and even then only in the case of a warranty claim.

The Volkswagen Group does not disclose the results of its research, but it follows from the sparse explanation that cause of defect, ostensibly, is in an unsuccessful piston design. In the event of a warranty claim, service centers replace the standard EM pistons with modified ET pistons, which supposedly should completely solve piston knock problem.

But as practice shows, overhaul of the CFNA engine is not the final solution to the problem and half of the owners again complain about the appearance of engine knock, after several thousand km. run. The other half of those faced with the knock of this engine, after a major overhaul, try to sell the car as soon as possible.

There is a version that chronic oil starvation caused by low oil pressure may be the true cause of the rapid wear of the CFNA engine. The oil pump does not provide sufficient pressure when the engine is idling, so the engine is regularly in oil starvation mode, which leads to accelerated wear.

Resource

Declared by the manufacturer Polo Sedan engine resource is 200 thousand km, but traditionally atmospheric engines with a volume of 1.6 liters produced by Volkswagen must go at least 300-400 thousand km.

Such a defect as the knock of pistons on a cold one makes these figures irrelevant. The Volkswagen group does not disclose official statistics, but judging by the activity on the forums, 5 out of 10 CFNA engines start knocking on runs from 30 to 100 thousand km. There are also known cases of manifestation of a defect on runs of less than 10 thousand km.

However, it should be noted that no cases of a stuck CFNA motor have been recorded. This is probably due to the fact that the knock progresses gradually and gives time to decide whether to repair the engine or sell the car.

Among the large number of complaints about knocking, there are isolated reports of successful long-term operation of the motor, which has a knock on a cold one, which allegedly does not progress and does not bother. Unfortunately, such reports are not confirmed by video recordings and, most likely, there is a knock not on pistons, but on hydraulic lifters. According to the reviews of car owners whose engine began to knock for real, it soon becomes impossible to ignore this knock. The ringing becomes such that “it’s a shame to stand next to the car” and “it can be heard from the balcony of the 7th floor.”

CFNA engine replacement

If the car is under warranty, the manufacturer performs a free warranty repair, replacing the standard EM pistons with modified ET ones. The cylinder block and crankshaft can also be replaced, but these expensive parts are not always changed under warranty.

Engine CFNA equipped timing chain drive, and the chain tensioner does not have a reverse lock. There are no grooves on the pistons either, so chain break/jump leads to Armageddon valve bend motor. The steel chain is designed to provide a higher resource and reliability in comparison with a belt drive. In fact, the timing chain of this engine stretches quite quickly and needs to be replaced already by 100 thousand kilometers.

The chain tensioner does not have a backstop and operates only due to oil pressure, which is pumped by the oil pump and occurs only after the engine is started. Thus, the chain tension occurs only when the engine is running, and while the engine is turned off, the stretched chain can move with the tensioner.

Concerning it is not recommended to park the car with the gear engaged, but without parking brake. When starting the engine, a stretched chain on the camshaft gears may jump. In this case, it is possible for the valves to meet the piston, which leads to costly engine repairs.

Over time, during operation, the standard CFNA exhaust manifold cracks and the car starts to growl in a bass voice. It is advisable to replace the exhaust manifold for free, before the end of the warranty, otherwise it will either have to be replaced (for 47 thousand rubles) or brewed (as in the photo), which will cost less.

Characteristics of the CFNA motor

Manufacturer: Volkswagen
Years of issue: October 2010 - November 2015
Engine CFNA 1.6 l. 105 HP belongs to the series EA 111. It was produced for 5 years, from October 2010 to November 2015, and then was discontinued and replaced by an engine CWVA from the new generation EA211.

Engine configuration

Inline, 4 cylinders
2 camshafts without phase shifters
4 valves/cylinder, hydraulic lifters
Timing drive: Chain
Cylinder block: Aluminum + Cast iron sleeves

Power: 105 HP(77 kW).
Torque 153 Nm
Compression ratio: 10.5
Bore/Stroke: 76.5/86.9
Aluminum pistons. Piston diameter, taking into account the thermal expansion gap, is 76.460 mm

In addition, there is a CFNB version, which is completely identical, but is equipped with a different firmware, thanks to which the engine power is reduced to 85 hp.