Engine Polo sedan. Why does the Polo sedan engine knock? Reliability, problems and repair of the Polo Sedan engine
The Volkswagen Polo has a wide range of engines installed in the engine compartment.
It includes three-cylinder and four-cylinder engines with different volumes and a wide spread of power.
The main thing that unites all Volkswagen Polo power plants is the absence of serious design flaws, high reliability and great durability of all engines.
The engines comply with environmental requirements and are characterized by low fuel consumption.
Three-cylinder engines that power the Volkswagen Polo
The Volkswagen Polo is powered primarily by gasoline engines. There are also options with a diesel engine. They have not found wide distribution in the domestic market. The volume of installed three-cylinder power units ranges from 1.0 to 1.4 liters.
The most economical petrol engine is the 1.0 TSI Blue Motion. Despite its liter volume, it produces decent performance. Its power is 95 Horse power.
At the same time, the engine develops a torque of 160 Nm. The manufacturer has upgraded the device power unit, as a result of which under the hood of the Volkswagen Polo it was possible to achieve 110 horsepower and 200 Nm of torque. These figures are very respectable for a three-cylinder engine.
One of small engines, installed on the Volkswagen Polo is an in-line three-cylinder EA 111. This is a Czech engine, the design of which began in the mid-70s. The engine was migrated from the Audi 50, so it is practically free of childhood diseases. It has a displacement of 1.2 liters and produces 70 horsepower. Volkswagen Polo was equipped with this engine until 2014. New cars have more powerful internal combustion engines.
In 2009-2013, the three-cylinder turbo diesel 1.2 TDI BlueMotion gained wide popularity. The engine consumed up to 3.4 liters of diesel fuel per 100 kilometers. The engine was subsequently replaced with a more powerful 1.4 liter TDI BlueMotion. In 2016, the power unit was modernized, allowing it to remain competitive today.
Four-cylinder powertrains of the Volkswagen Polo
Most Volkswagen Polo sedan and hatchback cars are equipped with four-liter power units with engines ranging from 1.1 to 1.9 liters. The most popular engines were 1.4 and 1.6 liters.
Cheaper options are Volkswagen cars Polo with 1.6 liter engines. They have a power of 90 hp, 105 hp and 110 hp. Power plants have positive reviews from car owners. They are reliable and durable. The latest design upgrade was carried out in 2017. The most popular today is the 1.6-liter CFNA engine.
Unlike the domestic market, the 1.4 TSI engine is gaining popularity outside of it. It is the most dynamic. The operation of these power plants is accompanied by the need to use only high-quality fuel and synthetic motor oil.
Main technical characteristics
Volkswagen Polo has a wide range of engines used. The range of volumes of fuel consumed per 100 kilometers is from 3.4 to 12 liters. In real conditions, many car owners note an increase in fuel consumption up to 15-17 liters. In most cases this is due to severe road conditions or the presence of malfunctions in the car.
Fuel consumption according to the technical specifications for the most popular engines equipped with automatic and manual transmissions is shown in the table below.
The best acceleration performance is achieved by Volkswagen Polo cars, which have 1.4-liter power plants under the hood. This characteristic for popular Volkswagen Polo models is given in more detail in the table below.
Table - Acceleration to 100 km/h Volkswagen Polo
| Model | Acceleration to 10 km/h, seconds |
|---|---|
| 1.4 TSI MT | 9 |
| 1.4 TSI DSG | 9 |
| 1.2 TSI DSG Comfortline | 09.07.2018 |
| 1.6 MPI MT Comfortline | 10.04.2018 |
| 1.6 MPI MT Allstar | 11.04.2018 |
| 1.6 MPI AT Highline | 11.07.2018 |
| 1.6 MPI MT Conceptline | 11.09.2018 |
| 1.6 MPI AT Comfortline | 12.01.2018 |
| 1.8 GTI Cup Edition | 07.05.2018 |
| 1.8 GTI | 08.02.2018 |
| 1.9 TDI Trendline | 09.02.2018 |
| Volkswagen Polo 1.1 | 16 |
| Volkswagen Polo 1.0 | 19 |
Engine life
Many car enthusiasts are wary of three-cylinder engines. It is believed that their motor life is too short. Three-cylinder engines installed in the Volkswagen Polo can cover 300,000 kilometers before major overhaul. This figure is very impressive and debunks the idea of low durability of three-cylinder power plants.
Of the entire line of engines, the most reliable and durable is the 1.6-liter unit.
It is the least sensitive to fuel quality and compliance Maintenance. For this reason, the Volkswagen Polo with a 1.6 engine has gained the greatest popularity in the domestic market. The engine life is 250-400 thousand km before major overhaul. According to reviews from car owners, the engines of cars produced in 2011-2012 are the most reliable.
The 1.4 TSI power units are characterized by the least reliability. They operate under high thermal load. The use of low-grade consumables or violation of maintenance intervals often leads to scoring on the cylinders. With proper treatment of the engine, its service life is about 230-250 thousand km.
Typical problems of power units
The most common problem, typical for the entire line of engines, is the presence of extraneous knocks during engine operation. The reason for this is the design feature of the pistons and the tightness of the intake manifold. A knocking sound appears after 20 thousand kilometers on a cold engine. Gradually extraneous sounds begin to be present when the engine is warmed up.
The updated 1.6-liter engine with 110 horsepower received a timing belt and a plastic intake manifold. This brought shortcomings to the motor. Many car owners complain that cracks appear on the manifold and that the engine bends the valves when the belt breaks. The chain drive of the 105-horsepower unit is many times more reliable.
Most frequent breakdowns power plant that Volkswagen Polo car owners are faced with are:
- sensor damage;
- cracks in the supports of the power unit;
- occurrence of piston rings;
- increase in crankcase gas pressure;
- The valve cover is sweating.
The feasibility of repair and replacement with a contract motor
When the power plant completely exhausts its resource, the car owner is presented with many options to revive his car. Some of them are:
- superficial engine repair;
- major overhaul of the power plant;
- purchase of a contract motor;
- purchasing an engine from a domestic car wrecker.
As a result of superficial engine repairs, problems that interfere with engine performance are eliminated. At the same time, breakdowns occur at regular intervals, since most of the elements have exhausted their service life.
The cost of such repairs is no more than 10,000 rubles. This type of restoration is recommended only in case of the next sale of the machine or in case of irregular use of it.
Major repairs allow you to restore up to 70-85% of the service life of a new unit. It is recommended to carry out it in the absence of difficult to eliminate consequences of operating the power plant. The cost of major repairs is about 30-50 thousand rubles.
Purchasing a contract engine from a foreign dismantling site is one of the radical ways to solve problems with the exhaustion of the power plant's resource. The price of such a motor ranges from 20 to 60 thousand rubles. It is quite difficult to estimate the residual life when purchasing an engine. It is worth noting that among the contract power plants there are quite a lot of units capable of covering 70-120 thousand km without serious financial investments for repairs. The photo below shows a typical engine from a foreign car wrecker.
Purchasing a motor at domestic car dismantling yards is quite a risky endeavor. In most cases real mileage it is impossible to find out, since it is repeatedly twisted, passing through the hands of intermediaries. Therefore, you can purchase a used engine from domestic car dismantling yards only after a personal inspection with a familiar auto mechanic or motor mechanic. The cost of such a unit is 15-35 thousand rubles.
Recommendations for choosing a Volkswagen Polo car with various power plants
According to reviews from car owners, it is best to purchase a Volkswagen Polo with gasoline engine 1.6 liters. The most modern engine has 110 horsepower. This is quite enough for comfortable driving both in heavy traffic and on the highway. The motor is not whimsical and has a good resource.
If the car owner’s priority is the car’s dynamics, then you should take a closer look at the 1.4 TSI petrol engine or 1.9 liter diesel engine. They have excellent technical characteristics and are able to provide a sporty driving style for the driver.
For those who want to save on fuel, there are three-cylinder versions. It should be borne in mind that you should not expect good dynamics from a 1.0-1.2 liter power plant. Despite this, the low power engine will not cause problems when driving in city traffic.
Reading time: 7 minutes.
Ideal mechanisms exist, perhaps, only in futuristic worlds described by science fiction writers. In their imagination, machine components never wear out and are not affected by corrosion and various substances. There is only the basic essence conveyed by the main parts of the device.
In reality, not everything is so simple. Every part of the car requires timely care. Manufacturers establish certain frameworks for replacing consumables and diagnosing the performance of the main components of the machine. Man has not yet invented the perpetuum mobile: you have to compensate for the shortcomings with constant car maintenance.
It’s not for nothing that we’re talking about perpetual motion. Although it is not in the car, it performs the same functions as its human counterpart. The “heart” not only sets the car in motion, but also emphasizes the individual character of its owner, lives the same life with him and “grows old” at the same time.
The Volkswagen Polo sedan is a unique car created by a popular German automaker. With its own and fashionable electronic “gadgets” adapted for Russian winter, it conveys the harsh temperament of our climate and road conditions.
The engines installed in new Polo sedans since 2015 deserve special attention. Both units run on gasoline and their dynamics are ideal for driving on our roads.
With proper operation, engines from Wolfsburg can serve a careful driver for a long time. But precise German technologies can also fail. Large motor overloads affect the efficiency of its components.
Common problems and solutions
Many owners of the Polo sedan are faced with extraneous noise arising from the engine. Hearing an unexpected knock in the leading organ of a car is very unpleasant. It clearly doesn't bode well. In such a situation, the main thing is to remain calm and try to independently determine the source of the noise. The saddest outcome that can happen in this case is the crankshaft liner turning. This is the end for any car: we call a tow truck and take the “pet” to a service center.
To increase the service life of the engine liner, specialists use materials that soften the friction of parts. They don't cost that much, and you can find them in any car store. If a “cushion” is already installed in the motor, then before disassembling the “engine” you should check the condition of the auxiliary element. It is possible that it is she who is knocking, and not the liner.
What to do if the nasty tapping starts to get boring? To diagnose the problem, you can go to a car service center and pay a considerable amount of money for the service. Another option that “newbies” are afraid of is to check everything on their own.
There is nothing to be afraid of here. You just need to know which nodes should be examined.
The most weakness in Polo sedan - valves. These elements are most often subject to physical impact. In general, the problem of valves in the engine is typical both for cars of the domestic automobile industry and for top-end foreign cars.
The functionality of the valves can be determined by the sound. An extraneous knocking noise appears at idle or medium engine speeds. This is a ringing metallic clang, which is very noticeable against the background of the operation of the power plant. Pushers have a similar sound. But their tone is a little higher. In addition, it can change while the engine is running.
When the pistons knock, you should drive carefully so as not to overload the engine. There is no point in delaying the replacement of components - a small snag can result in an expensive repair.
If a high rhythm with a characteristic metallic ringing is observed, it means the piston fingers are knocking. The sound volume increases as the speed increases and the load on the engine increases. You can get rid of the unpleasant “chord” by removing the high-voltage wire from the ignition system. With such a problem, you should immediately seek qualified help.
Connecting rod bearings have similar symptoms. Rhythmic “rattling” and average sound tonality are the main symptoms of a malfunction. The knocking also disappears if you remove the high-voltage cable from the ignition.
A decrease in the volume of the sound that occurs in indicates a breakdown in the main bearings. Again, as the speed increases and the load on the engine increases, the tone begins to increase. Simultaneously with the appearance of the “blame”, as a rule, the oil pressure decreases. In this case, the best way out of the situation is to stop the car completely and call a tow truck (or trusted friends who will help tow the sedan to the garage).
Usage low quality fuel with a low octane number can cause detonation knocks. It is not difficult to distinguish them - they have a strong metallic echo. At medium speeds the knocks can be unheard. They become noticeable when accelerating. To get rid of this kind of “trouble”, it is enough to fill the tank with a more reliable good high quality gasoline, adjust the ignition system and reduce the load on high gears. Otherwise, the combustion chambers and engine valves will need to be cleaned.
A good assistant for independently diagnosing the sound of the Polo sedan engine is an ordinary phonendoscope used in medicine.
In cold weather, knocking can occur at any time. This usually happens at 15-30 thousand km. There are rare Polo sedan models in which problems with pistons or other elements of the power plant arise at the very beginning of the run.
The main methods of combating engine knocking, which are offered by service technicians and experienced motorists:
- When starting the engine, it is necessary to increase the load on the electronic systems.
- Fuel your car only with a proven brand of fuel. 95 is optimal, 98 is even better.
- As soon as we parked, we bring the speed up to 3000 and hold it for a minute. Then, without slowing down, turn off the engine.
- You need to change the engine oil in accordance with the car manufacturer's recommendations. On a Polo sedan best option– 9000 km.
- Warm-up should be carried out at increased speeds at around 1500.
The restless German or the engine resource of the Volkswagen Polo sedan. As you understand, today we will talk about another masterpiece of the German concern - Volkswagen Polo with its next restyling. The brand, in fact, like the model, is not new, but has a long-term positive reputation and a wide circle of fans. Europeans and residents of post-Soviet countries have long been accustomed to trust unconditionally a German product that does not need a thorough introduction.
The main indicators of the car are engine reliability and maintenance availability. We will look at how the traction element is designed and its features step by step below.
Distinctive features of CFNA engines
The service life of the Volkswagen Polo sedan engine will directly depend on timely operation, despite the fact that it is designed for 500 thousand km. mileage So, the gasoline engine is a four-cylinder unit with a power 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 identification of various nodes, the latter are highlighted in a separate color. All this together makes it possible to show consumption in the combined cycle of no more than 7.0 l/100 km.
CFNA technology
What is a Volkswagen engine?
- intake manifold made of fire-resistant polymer material;
- installed 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 a contactless ignition with four coils;
- continuously 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 fastening system consists of three cushions made of durable rubber, which reliably dampen various vibrations and vibrations.
Procedure for the next maintenance
(banner_content)Manufacturer's engineers strongly recommend inspection every 15 thousand km. with mandatory computer diagnostics of all components and assemblies, as well as replacement of the following elements:
- oil filter element;
- oil pan plugs.
At 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 5W-30 lubricating fluid in the amount of 4.0 liters. In addition, pay attention that the color of the insulator can tell you 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. mileage
In the CIS Volkswagen Polo Sedan is a well-known and quite popular model. Modern design and thoughtful solutions from the German concern Volkswagen allowed the budget sedan model to quickly get onto the list of real bestsellers. As is known, this car assembled in Kaluga and for quite a long time it was produced with two reliable engines with a power 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 grille, 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 look at this in more detail.
So, the new Volkswagen Polo Sedan, as before, is a model assembled in Kaluga, which has received improvements, including the engine. We are talking about the CFN motor of the E211 series. Let us immediately note that the new power unit has become even more powerful and more economical. At the same time, it is also noteworthy that affordable sedan will receive units produced at the 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, 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 similar torque, while the top speed is already 191 km/h. Acceleration to hundreds on version with manual transmission is 10.4 sec.
As for the automatic Polo sedan, with the new engine the car accelerates more slowly than the previous modification. Acceleration takes 11.7 seconds. The consumption is also slightly higher, amounting to 5.9 liters, but this is quite expected for an automatic transmission.
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 engine with 125 hp. Also, this car will be equipped with a 6-speed robotic gearbox.
Let's return to the engine. The new Polo engine, or rather its 90 and 110 hp MPI versions, have become more modern and environmentally friendly. The main feature of the modernized versions of CFN is aluminum. Improvements have made it possible to speed up the warm-up of the engine, and the stove also starts working faster and more efficiently.
The sedan also received an expanded package, which provides improved preparation for winter conditions, which allows for confident and stable driving down to -30 and below.
Other parts and components did not receive any major changes. Actually plastic, it can easily withstand high temperatures. The ignition system is non-contact, the oil pump has a pressure sensor, and it can be configured.
As for the resource, dealers voice a figure of 500,000 km. However, it should be understood that running-in, fuel quality, motor oil and maintenance, as well as operating features are factors that can greatly affect the resource indicator, both for the better and for the 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 offered by the official dealer as part of vehicle servicing.
Naturally, as in any other case, the service life of any engine 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 you shouldn't rely on the stated 2 or 3 year warranty.
Let's go further, for the accurate and correct selection of “consumables” the engine number and its markings will greatly help. On a sedan from Kaluga serial number located on the cylinder block under the housing. Since the internal combustion engine is new, such information greatly facilitates the selection of engine oil, original spare parts or replacements 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 the tolerances. The oil must have approval 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 during production. To change the oil, you need to buy about 4 liters; the manufacturer himself recommends pouring 3.6 liters into the engine, and the rest can be stored for topping up. This also needs to be monitored, as it can cause certain problems.
There is also information that power units undergo a so-called “cold run-in” of the engine right at the factory. Managers at car dealerships emphasize that it is for this reason that engines 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 broken in.
The rules are quite simple: you must avoid driving without warming up, abrupt starts, active braking, driving at a constant speed and at the same speed, driving in high gears, too high and too low speeds, driving uphill in high gear, engine braking, towing a trailer. etc.
In other words, during break-in there is no need to “load” the engine for at least the first thousand km. Also after the first thousand oil and oil filter you need to change it, and always use high-quality gasoline not lower than AI-95. Then the next oil change is expected at 3 thousand km, and the 10 thousand km mark can be considered the complete completion of the break-in. After this, the oil is changed again, and the engine can continue to be gradually loaded.
What's the result?
As you can see, if we talk about Volkswagen models Polo Sedan, after restyling the engine became 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 quite rightly be considered an internal combustion engine made in the Russian Federation.
In practice, the pre-restyling version has proven itself to be a worthy competitor to 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 the pistons when cold was noted. Drivers also experienced that the throttle sensor wires chafed, cracked, problems appeared with crankcase ventilation, and the valve of this system “stuck.”
Another common complaint is problems with the power supply system. At the same time, malfunctions in the operation of the injector and the appearance, as well as knocking of hydraulic compensators, cannot always be considered a drawback of the engine, since the main reason is the quality of the fuel and oil, as well as unscrupulous maintenance.
It is also important to understand that other competing models, to a greater or lesser extent, have certain and often similar problems. However, Volkswagen in many cases takes into account certain shortcomings when modifying its engines. This means that the new CFN E211 engine in the Polo Sedan may well turn out to be a successful and reliable engine, which is devoid of many of the shortcomings and “illnesses” of its predecessor. However, strong and weak sides This internal combustion engine will only be revealed by practical operation.
Read also
Engine of the FSI family: differences, features, pros and cons of this type of power unit. Common problems with FSI engines, engine maintenance.
Everything would be fine, the engine is just like an engine, if not for the knocking of the engine when cold. Very many CFNA engines begin to knock before they even reach one hundred thousand kilometers, and in some cases the defect occurs already in the first 30 thousand.
Be careful when purchasing. A common problem is a progressive knocking noise after a cold start.
Polo Sedan Engine - CFNA
In due time, exit to Russian market Polo Sedan models costing from 399 rubles. (!) became a sensation and was considered an achievement of the Volkswagen concern. Still would! Getting Volkswagen quality for that kind of money is a dream for many. But, as often happens, the low price had a bad effect on the quality of the product - the Polo Sedan engineCFNA 1.6 l 105 hpturned out to be not as reliable as expected.
Engine CFNA 1.6 was installed not only on the Polo Sedan, but also on other models of the Volkswagen concern, including those assembled abroad. From 2010 to 2015, this engine was installed on the following models:
- Volkswagen
- Polo Sedan
- Jetta
- Vento
- Lavida
- Skoda
- Rapid
- Fabia
- Roomster
If you don’t know what engine is installed in a given car, you can find out by looking at its VIN code.
CFNA motor problems
The main problem of the engineCFNA 1.6 is knocking when cold. At first, the knock of the pistons on the cylinder walls manifests itself as a slight tinkling sound in the first minutes after a cold start. As it warms up, the piston expands, pressing against the cylinder walls, so the knocking noise disappears until the next cold start.
At first, the owner may not attach any importance to this, but the knocking progresses and soon even the inattentive car owner realizes that there is something wrong with the engine. The very appearance of a knock (impact of the piston on the cylinder wall) indicates the beginning of the active phase of engine destruction. With the arrival of summer, the knocking may subside, but with the first frost, CFNA will begin to knock again.
Gradually, the CFNA engine knocking “when cold” increases its duration, and one day, it remains even after the engine has warmed up.
Engine knock
The knock of the engine piston on the cylinder wall occurs when the pistons are repositioned at top dead center. This becomes possible as a result of wear of the pistons and cylinder walls. The graphite coating of the skirts quickly wears down to the piston metal
Significant wear occurs in places where the piston rubs against the cylinder walls.
Then the metal of the piston begins to hit the cylinder wall and then scuffing occurs 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 recall. Instead of replacing the entire unit, the manufacturer performs piston group repair, and even then only if you apply under warranty.
The Volkswagen group does not disclose the results of its research, but from the scant explanations it follows that cause of defect supposedly consists in poor piston design. In case of a warranty claim, service centers replace standard EM pistons with modified ET ones, which supposedly should completely solve problem of piston knocking in cylinders.
But as practice shows, CFNA engine overhaul is not the final solution to the problem and half of the owners again complain about the appearance of engine knocking, after several thousand km. mileage The other half of those who have encountered knocking from this engine try to sell the car as quickly as possible after major repairs.
There is a version that the real reason for the rapid wear of the CFNA engine may be chronic oil starvation caused by low oil pressure. The oil pump does not provide enough pressure when the engine is running at speed idle move, therefore the engine is regularly in oil starvation mode, which leads to its accelerated wear.
Resource
Declared by the manufacturer Polo Sedan engine life is 200 thousand km, but traditionally naturally aspirated 1.6 liter engines produced by Volkswagen should run at least 300-400 thousand km.
A defect such as piston knocking when cold 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 begin to knock at mileage from 30 to 100 thousand km. There are also known cases of defect manifestation on runs of less than 10 thousand km.
However, it should be noted that there have been no cases of a jammed CFNA motor. This is probably due to the fact that the knocking progresses gradually and gives time to make a decision about repairing the engine or selling the car.
Among the large number of complaints about knocking, there are isolated reports of successful long-term operation of an engine that has a knocking noise when cold, which supposedly does not progress and does not bother. Unfortunately, such reports are not confirmed by video recordings and, most likely, it is not the pistons that are knocking, but the hydraulic compensators. According to reviews from car owners whose engines began to knock for real, it soon becomes impossible to ignore this knocking. The ringing becomes so loud that “it’s embarrassing to stand next to the car” and “it can be heard from the 7th floor balcony.”
CFNA Engine Replacement
If the car is under warranty, the manufacturer performs free warranty repairs, replacing standard EM pistons with modified ET ones. The cylinder block and crankshaft can also be replaced, but these expensive parts are not always replaced under warranty.
Engine CFNA equipped timing chain drive, and the chain tensioner does not have a reverse stop. There are no recesses on the pistons here either, so chain break/jump leads to "Armageddon" - the motor bends the valve. The steel chain is designed to provide higher service life and reliability compared to a belt drive. In fact, the timing chain of this engine stretches quite quickly and requires replacement at 100 thousand kilometers.
The chain tensioner does not have a backstop and works only due to oil pressure, which is pumped by the oil pump and appears only after the engine is started. Thus, the chain tension occurs only when running engine, and while the engine is turned off, the stretched chain can move along with the tensioner.
Due to this It is not recommended to park the car with the gear engaged, But without parking brake. When starting the engine, the stretched chain on the camshaft gears may jump. In this case, the valves may encounter the piston, which leads to expensive engine repairs.
Over time, during operation, the standard CFNA exhaust manifold cracks and the car begins to growl loudly. It is advisable to replace the exhaust manifold free of charge, before the end of the warranty, otherwise it will either have to be replaced (for 47 thousand rubles) or welded (as in the photo), which will be cheaper.
CFNA Motor Characteristics
Manufacturer: Volkswagen
Years of production: 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 C.W.V.A. from the new generation EA211.
Engine Configuration
In-line, 4 cylinders
2 camshafts Without phase regulators
4 valves/cylinder, Hydraulic compensators
Timing drive: Chain
Cylinder block: Aluminum + Cast iron sleeves
Power: 105 hp(77 kW).
Torque 153 N*m
Compression ratio: 10.5
Bore/Stroke: 76.5/86.9
Aluminum pistons. Piston diameter, taking into account the thermal gap for expansion, is 76.460 mm
In addition, there is a CFNB version, which is completely identical, but is equipped with different firmware, thanks to which the engine power is reduced to 85 hp.
CFNA oil
Engine oil volume: 3.6 l
Recommended tolerance: VW 502 00, VW 504 00
The oil must comply with 502 approval, or the alternative 504 approval of the Volkswagen concern
The tolerance is indicated on the packaging, and can also be clarified on the oil manufacturer’s website
Recommended oil viscosity: 5W-40, 5W-30.
Filled from the factory 5W-30 Castrol EDGE Professional LongLife III, however, there is an opinion that this brand of oil does NOT provide high engine protection. And certainly, you should not change this oil at intervals of 30 tkm. If you need engine durability, In our country it is necessary to change the oil every 10 tkm maximum.
What kind of oil should I use?
Here are several brands of oil that meet VW 502.00 approval
- MOTUL Specific 502 505
- Shell Helix Ultra Extra 5W-30
- LIQUI MOLY Synthoil High Tech 5W-40
- Mobil 1 ESP Formula 5W-30
- ZIC XQ LS 5W30
CFNA engine: reviews
Judging by the reviews of the owners, there have been NO cases of a jammed CFNA motor. The knocking of the pistons, gradually increasing, causes inconvenience to the owner, but does not lead to sudden engine failure.
The main discussion of the problems of the CFNA 1.6 liter engine. 105 hp hosted at the Volkswagen Technical Forum - vwts.ru
Also, a separate website has been created for the problems of the CFNA engine - cfnainfo.ru, where you can find a lot useful information, including step by step instructions to receive free repairs.
And you will find a detailed photo report on the CFNA repair at a mileage of 57 tkm