Russified "German" Volkswagen Polo sedan is equipped with a four-cylinder gasoline engine 1.6 R4 16v CFNA with a capacity of 105 hp. The power system is based on distributed fuel injection and camshafts, which are made according to the DOHC scheme. Resource tests of the power unit confirmed the reliability and availability in service.
Under the hood, all aggregate elements are covered with plastic covers, especially important nodes are highlighted in color for convenience. The good dynamics of the Volkswagen Polo sedan requires only 7 liters per "hundred" in mixed driving.
Features of CFNA motors
What can please our driver is the timing chain drive. The high resource of this node will come in handy in the conditions of domestic service. The remaining options are represented by the following solutions:
- plastic intake manifold;
- the location of the air filter directly on the motor;
- the cylinder block and its head are made of aluminum alloy;
- contactless ignition system with four coils;
- system of stepless change of phases of gas distribution of inlet valves;
- using a PCV valve for forced crankcase ventilation;
- oil pump with pressure regulator;
- heating of the crankcase ventilation system;
- aluminum alloy crankcase.
The ICE power system is based on an electronic system that controls the distribution of fuel. The dosed mixture is supplied to the cylinders through the throttle assembly in accordance with the valve timing. The motor controller turns on the nozzles in turn, every 720 ° rotation of the crankshaft, but at start-up and high-speed modes, an asynchronous method of supplying fuel works.
The power plant is mounted on three supports with rubber-metal cushions. Two side ones hold the main weight, and the lower rear one dampens vibrations from the transmission torque.
Schedule of work on the Volkswagen Polo sedan engine during preventive maintenance
- Engine oil change.
- Oil filter replacement.
- Replacing the oil pan plug.
During the break-in period up to a run of 1.5 thousand km, there is an increased oil consumption in the engine of the new Volkswagen Polo sedan. Therefore, special attention should be paid to regular monitoring of its level in the crankcase and topping up in a timely manner.
At the next maintenance, carried out after 15,000 km, the above procedures are performed with a small addition - replacing the air filter. The amount of oil in the lubrication system is 4 liters, experts recommend "synthetics" 5W-30.
Typical malfunctions of the Volkswagen Polo sedan engine and methods for their elimination
During the operation of the CFNA internal combustion engine, a certain base of characteristic breakdowns of this model has accumulated:
- damage to the throttle sensor wiring;
- failure of engine mounts;
- malfunctions of the fuel injection system;
- failure of hydraulic lifters;
- valve failure PCV valve.
In the event of a loss of power and an increase in the consumption of fuels and lubricants, it is worth checking the spark plugs– their appearance can tell a lot:
- Soot deposits indicate over-enrichment of the mixture or late ignition.
- Oil deposits indicate problems in the piston group.
- Red deposits - the presence of iron-containing additives in gasoline.
- The electrodes are melted - early ignition.
- Ash deposits come from gasoline or oil additives.
- A damaged insulator indicates detonation, you need to check the knock sensor.
If the replacement of the candles did not give the desired result, you should check cylinder pressure level. To do this, all the candles must be unscrewed and alternately installed in the vacant holes of the compression gauge. Then turn the crankshaft with the starter while pressing the gas pedal.
Some maintenance and repair operations are available to most car owners with practical experience and the necessary tools. If there is no way to clearly determine the breakdown, the help of professionals is the best choice.
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.
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 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.
Due to this 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.
Toyota Land Cruiser 200 has been in production since 2007. This is a real old-timer of the market. And the point here is not that he has been on the assembly line for 12 years, but that he is at the same time the leader of the segment, because sales are only growing every year.
And all this is due to the fact that the brutal Japanese SUV is constantly being improved and modernized, as well as updated with new versions. And one of the last Land Cruiser 200 TRD. What is interesting about this car? Maybe it's a new competitor GLS 63 AMG or X7M?
What is TRD? TRD stands for Toyota Racing Development. This is a special division of the brand, which is engaged in fine-tuning cars. It's like AMG or M Performance. But there are some differences.
Design first. What kind of body kits were not installed on the Land Cruiser 200. At first these were projects from famous tuning studios, but now Toyota periodically releases new versions on their own. And the latest version is the Land Cruiser 200 TRD.
First of all, the car differs from the civilian version in a sports body kit. Here and in front the bumper is very massive, and in the rear there are large overhangs. All this impairs permeability. All other body parts are exactly the same as in civilian versions. The body kit is similar in style to the Executive Lounge version, but has sharper edges and TRD badges. The TRD logo flaunts on the fifth door and grille.
Interior. In the cabin, only the engine start button has changed, there is nothing new here. The only thing that has become a little more items made of genuine leather. And in the rest of the plan, everything is identical to the standard versions. Inside the Japanese frame SUV is traditionally spacious, comfortable and cozy. Ergonomics at the highest level. Unless the level of multimedia is frustrating. For that kind of money, it could have been better. But on the other hand, there are all-round cameras here, so the visibility here is ideal. And the driving position is high due to the presence of the frame.
Engine and ride quality. In the special version, they did not change anything. The car is equipped with the same engines: 4.5 liters diesel, 249 hp, 4.6 liters petrol, 309 hp. And I must say that the car is going very cheerfully.
Comparing this SUV with a frame and a solid rear axle to Mercedes-Benz or BMW is simply pointless. But there is one but. For the TRD version, the car is equipped with an adaptive suspension by default. You can also set the amount of ground clearance. It is very comfortable. It is worth noting only one minus of all Land Cruiser 200 engines. They are very voracious. If you drive a car with a diesel engine, then you can easily reach a fuel consumption of 17-19 liters of diesel per 100 kilometers.
Off-road driving. Here the SUV manifests itself in all its glory. There is a hydropneumatic suspension, and the KDSS system, and Crawl Control. You can also block the rear axle. Especially off-road cameras of all-round visibility help. And for greater safety, you can turn off the airbags. Off-road it's a must. In this one, the Land Cruiser 200 is the best. And everyone knows this.
Outcome. The new version of the Toyota Land Cruiser 200 TRD is a great addition for those who love a dynamic ride and beautiful appearance. A car in this design costs about 6.5 million rubles. And this is an acceptable price for such a reliable, frame and spacious car.
Engine Volkswagen Polo sedan has a working volume of 1.6 liters and a power of 105 horsepower. But this year there's another one volkswagen polo sedan engine the same volume of 1.6 liters, but with a capacity of only 85 horses. This engine is put on the new Volkswagen Polo sedan "Style". Today we will talk about these motors in more detail.
The main engine of the Polo sedan with a capacity of 105 hp is a 16-valve 4-cylinder gasoline engine with distributed fuel injection power 77 kW. The torque is 153 Nm. The power unit is located transversely and has the factory name CFNA, this is a classic DOHC, with two camshafts on top.
Timing drive Polo sedan uses a chain, instead of a timing belt, as on many other engines. The chain mechanism in the timing is more reliable and practical than the belt. In addition, the timing belt needs to be changed every 40-50 thousand mileage, and if oil gets on it, it will fail instantly. And the chain usually lasts much longer. Detailed engine specifications Volkswagen Polo sedan see below.
Engine Volkswagen Polo sedan 105 hp 16 valves
- Working volume - 1595 cm3
- Power - 105 hp at 5600 rpm
- Torque - 153 Nm at 3800 rpm
- Compression ratio - 10.5:1
- Cylinder diameter - 76.5 mm
- Stroke - 86.9 mm
- Fuel consumption in the urban cycle - 8.7 (5MKPP) 9.8 (6AKPP) liters
- Fuel consumption in the extra-urban cycle - 5.1 (5MKPP) 5.4 (6AKPP) liters
- Fuel consumption in the combined cycle - 6.4 (5MKPP) 7.0 (6AKPP) liters
- Acceleration to the first hundred - 10.5 (5MKPP) 12.1 (6AKPP) seconds
- Maximum speed - 190 (5MKPP) 187 (6AKPP) kilometers per hour
There is still little information about the new Polo sedan engine with a capacity of 85 horses, since it appeared on this car quite recently. This motor is combined only with 5 speed mechanics. Dynamic performance is noticeably worse than that of the main engine of the Volkswagen Polo sedan. But some characteristics are already known. The engine model has a factory designation CFNB, with the same 16 valves, this engine modification does not have a continuously variable valve timing system on the intake shaft. This is the main thing between motors, this engine also has timing chain drive.
Gas distribution mechanism with overhead camshafts, power 63 kW, distributed injection. Actually, the motors differ mainly only in the presence or absence of the actuator of the timing system. Hence the power difference. By the way, you can safely use 92 gasoline, this engine is ready even for such fuel. Detailed specifications below.
Engine Volkswagen Polo sedan 85 hp
- Working volume - 1598 cm3
- Power - 85 hp at 3750 rpm
- Torque - 144 Nm at 3750 rpm
- Cylinder diameter - 76 mm
- Stroke - 86.9 mm
- Fuel consumption in the urban cycle - 8.7 (5MKPP) liters
- Fuel consumption in the suburban cycle - 5.1 (5MKPP) liters
- Fuel consumption in the combined cycle - 6.4 (5MKPP) liters
- Acceleration to the first hundred - 11.9 (5MKPP) seconds
- Maximum speed - 179 (5MKPP) kilometers per hour
Why does the Volkswagen Polo sedan manufacturer use an outdated motor, and even a low-power one? The answer most likely lies in the financial plane, the Polo sedan engine with a capacity of 85 horses is much cheaper to manufacture. Actually, the total cost of a car may decrease, which is very important against the backdrop of a falling market for new cars in our country.
It is worth noting that in the fall of 2015, the production of a new engine for the Polo sedan began in Kaluga. All budget sedans of the 2016 model year are equipped with more modern 1.6-liter engines with a timing belt drive with a capacity of 90 and 110 hp.
