Volkswagen Polo engine knock on cold as corrected problem. Causes and consequences: knocks the polo sedan engine to prevent the edge of the polo sedan, you need
"Feature", remind, is that the piston is knocking in the smoothing. And what is so weak - "feature". The remaining features are similar to the 1.8 / 2.0 engines - more than 100,000 km around the city does not go such a motor.
So you are still proud that you have all the attributes forged piston!
And it is even funny that under warranty many changes only pistons. The block remains the same. In the comments, the owner of the compression from 9 to 17 may communicate with you after repair from the dealer. Nonxistant such scatter. There is from what to choose) Tags: Volkswagen polo engine knock on cold as corrected problem
VW Polo Sedan CFNA 1.6 engine knock after warranty repair
12 mar. 2013 - technical characteristics Volkswagen. Polo V Sedan ... before that I owned the VAZ-2112 car with an engine 1.6 16V, and ... and then weekdays began, up to 8 thousand no problems all ... ... where it is written that the knock on the cold is allowed within two three Minutes, Zhor Oil too.
Book in Engine Polo Sedan | Topic: Konstantin
I know that the problem is beaten, I discussed thousands of times. But still I will contribute. A knock appears on the cold, the hydraulic is presumably knocking. The second assumption scares - Shp. In favor of the fact that the hydraulics says one fact. If, after a long parking, you start the motor seconds for 10, and then leave another day, then with the factory after 24 hours there is no knock. Logic is such - cold oil does not have time to drain from the hydrockets. The second point - changed the oil, the sounds began to gradually disappear, after 1000 km of the run after the shift completely disappeared. Now I drove 3,000 after replacing - the sounds are again gradually returned. Is it possible to say with confidence, it's SPGs or not, because the replacement of the hydrocomerizers in this case will even reap me) the sound of the knock is applied
Artem Atext "ItemProp \u003d" Text "\u003e Does not look like a sound on hydrocompensators ...
Stepan What year of release car?
Engine knock 1.6 105l.s. CFNA (Polo Sedan, Fabia, Rapid) - DRIVE2
Story owner Volkswagen. Polo Sedan. - breakdown. ... The knock in the engine CFNA is not a problem, it is rather a feature that is available on ...
During the operation of the car Volkswagen Polo. The car owner may encounter such an unpleasant phenomenon as a knock in the engine. The causes of the origin of sound can be different, but in any case, ignore the outsiders is not recommended.
The appearance of the knock in the power plant indicates that in the field of interference parts there was an increase in the gap above the critical one.
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Engine Volkswagen Polo
Knock arising due to engine support
In the process of operating support power plant Subjected to wear. Also possible by their mechanical destruction. A knock on the engine side will in this case will be coming during intensive overclocking or braking.
Exterior view of the engine pillow
To diagnose problems with motor pillows, it is necessary to visually inspect each support. The presence of mechanical damage, deformations or other signs of wear indicates the need to replace them.
Engine knock due to oil problems
As a result low level Oils may be the appearance of a knock in the power plant. To diagnose a malfunction, it is necessary to remove the oil dipstick and determine the level of motor lubrication. If the oil volume is nearing the minimum value or below the MIN mark, then it is necessary to add oil to the "Max" level.
Also, the engine knock can also be caused by low quality oil or impaired intervals of its replacement. To eliminate foreign sounds, it is necessary to replace the product lubrication recommended by VAG. This requires fully observe the replacement intervals.
Call the bracket of the motor can also oil inappropriate by the recommended manufacturer with the recommended manufacturer. To eliminate the noise of the power plant, it is required to purchase oil, which fully complies with SAE 5W-40, 5W-30, 0W-30 standards.
Fuel
The inconsistency of the octane number leads to detonations in the power plant. This in turn causes a knock of the motor. Most often outsided sounds manifest themselves during intensive accelerations or on the revolutions of close to idle.
Table - the effect of octane number for the presence of engine knobs
To eliminate the knocking knob, it is necessary to fade a car with a gasoline octane number of 95 or 98. If the car is installed HBO, then for the diagnosis of the causes of the knock, you can compare the operation of the power unit on different types Fuel.
Student of the power plant due to hydrocompensators
The design of the Volkswagen Polo sedan is such that on the not heated motor hears the knock of the hydrocompatator. At the same time, car owners note that cold Motor May knock from a few seconds to five minutes. When the temperature is reached, more than 60 degrees go out.
To diagnose a malfunction, you need to open the hood and listen to the operation of the power plant immediately after it was launched. A ringing knock will be heard at the top of the engine. An increase in revolutions leads to a change of sound.
Many car owners note that the knock of the hydrocomathers is not a critical breakdown. The operation of the car is possible for a long time without damaging the main elements of the engine. Still, if the car owner decided to eliminate the outside sound, it is necessary to identify the knocking hydrothelter. For these purposes, it is necessary to change alternately hydrocomathers, listening to the sound of the working motor.
Very often, the sound, knocking hydrotherapists, passes when changing engine oil. Therefore, before looking for a failed hydrocompensator must be replaced. motor lubricant In the engine.
Knock in a piston group
Volkswagen Power Plant Design Polo Sedan Such is that most car owners dock with a piston bed. This is connected with miscalculations when creating engineers of the motor. In most cases, knock is not dangerous for the power plant. Despite this, when the middle of the head of the cylinder occurs from the middle of the cylinder block, you need to contact the maintenance station or to a good motorist.
One of the main reasons for knocking pistons is excessive wear piston rings. At the same time, foreign sounds are more manifested on the cold. After warming up the motor, the knock decreases or passes completely. Further operation of the power plant is dangerous in that the appearance of scaling on the cylinder mirror. This in turn will lead to expensive overhaul. In case of occurrence excessive wear Piston rings need to disassemble the engine and replace them.
Also, the knock in the piston group is possible due to excessive wear of the piston fingers. Diagnose this malfunction can be characteristic:
- the engine is most intensively knocking at acceleration;
- motor creates characteristic sounds when braking a power plant;
- recalling the candles from cylinders leads to the complete disappearance of the engine's knock.
To eliminate the malfunction, it is necessary to disassemble the cylindropore group and determine the fingers of the pistons. Excessively worn items are subject to replacement.
The muffled metal sound can talk about wear of the indigenous bearings. The appearance of gaps between the crankshaft and the liner suggests that the further exploitation of the engine without repair can lead to the emergence of looting and the need for overhaul.
Hello, according to the car repair instructions, the reasons for the hoc knocking:
1. Failed a hydrocomponator. But then the knock does not stop with a heated engine. The reasons for the failure of the GC may be different:
Mechanical damage (production) of plunger elements;
The hydrocompensator jammed due to dirt and sediments, which accumulated inside the mechanism;
It does not work in the regular mode, the valve transmitting oil. This is usually due to the dirt that fell into the valve;
The hydrocompensator is knocking due to the mechanical generation of outdoor mating surfaces. But in this case, the knock will continue on the hot engine.
2. Hydrocompensators are knocking on the cold due to the increased viscosity of the oil or due to the use of oil, which has already exhausted its resource.
3. It does not hold the valve of the hydraulic component, and the oil flows out of it in the mode when the engine is muff. In this case, the effect of recent GK occurs. But it disappears as soon as the air is turned out. Moreover, this process can take about 5-7 minutes, but perhaps more. The engine is allowed to work on 2500 rpm for 3-5 minutes. Then turns are shred to turn idle move. Then again up to 2500 rpm. Usually during this period, all air is supplanted from the system and the hydrocompensator begins to work in normal mode, and the knock disappears.
4. Babied the inlet that is responsible for the supply of oil. But as the engine heats up, the zoom is discharged, and the oil begins to flow normally. Those elements that turn out to be more viscous can score on the hydrocommovensector valve, and the oil will again not go to the system normally.
5. Low temperature On the street and inconsistency of oil temperature conditions. The oil becomes more viscous in the system due to frost, and until the engine is heated, the oil does not restore its properties.
6. The second option of this situation, but only when the valve of the hydrocompensator does not hold. The oil with a hot engine leaks through the valve. GK is naturally delivered. Then the engine cools, and the oil changes its properties. And while the engine does not warm up, the oil will not flow into the system. In this situation, there will be more prolonged pumping of the hydrocompanator while the system does not earn in normal mode. But if such a situation arose, then you need to change the oil and repair or change the GC.
7. Hydrocompensators are knocking on a cold if drove oil filter. Here it may occur and stopping the knock when the engine is heated. Some of the oil can still begin to arrive with increasing temperature. But most often, it does not occur and the GC continues to knock and with a hot engine.
Timely passage technical Reception - Pledge of workability car Engine. But, not all motorists understand how important this nuance is important. Yes, and not everything in this world is forever, sooner or later it comes to repair force aggregate.
Motor characteristics
Many motorists faced the fact that a knock in the engine was heard on the cold. Of course, you can write off everything on a broken pillow or the stapper short, but as practice shows - not everything is so simple as it seems. The famous Volkswagentian motor - CFNA is installed on the polo.
Consider the mains specifications Power plant to understand the structure:
| Name | Indicator |
| Manufacturer | Chemnitz Engine Plant. Kaluga Plant. |
| Volume | 1,6 liter (1598 cm cubic) |
| Number of cylinders | 4 |
| Number of valves | 16 |
| Fuel | Petrol |
| Injection system | Injector |
| Power | 85-110 hp |
| Fuel consumption | 6.4 l / 100 km |
| Diameter of the cylinder | 76.5 mm |
| Econorma | Euro-5. |
| Recommended oils | 0W-40 5W-30 5W-40 |
| Engine resource | 200 000 km |
| Motor use | VW Polo Sedan. VW Jetta. Skoda Fabia. Skoda Octavia. Skoda Rapid Skoda Yeti. Skoda Roomster. |
Causes of the knock
Having considered the basic technical characteristics can be seen that the power unit is quite common. The main reason for which the polo begins to knock on cold, car enthusiasts and repair masters are noted - the special structure of the piston group. All causes of the knock start from this place. This may mean that the motor will have to capital.
Pistons can knock due to a breaking finger, which means that pistons with your fingers should be changed. Another problem that can cause a knock is inserts. This means that it's time to grind crankshaft and install repair dimensions.
And now let's turn to less sad reasons than overhaul - hydrocomathers. Often, after 100,000 km of mileage, hydrocompensators are out of construction. Replace these details, you can independently, or contacting the car service.
Also, a knock may be caused by broken landing places valves. In this case, it is necessary to dismiss the head of the cylinder block and change the part to the repair or install the repair guides.
By pouring poor-quality fuel, it can cause detonation stuffs. On cold or idling Motor, heard metallic szvuk and distinguish from mechanical breakdown quite difficult. This sound disappears when driving and speed. To get away from this problem, you need to pour high-quality fuel from proven suppliers.
Output
The edge of the polo engine on the cold can be due to different reasons. In order not to "get on money", it is recommended to conduct a timely and efficiently maintenance. This will increase the life of the power plant, as well as avoid premature overhaul.
It all started with the letters of our readers - they say, the polo sedan has revealed a problem: the engine is knocking, and we, owners, can not reach the manufacturer. Meanwhile, there is a Volkswagen Polo to the autores, and with the same engine under the designation of CFNA. The car was bought in the fall of 2010 - count, from the first "Kaluga" parties. Listened - and accurately, there is an "extra" tapping. Disassembled the engine - and in all sorted out.
CFNA engines other than Kaluga Polo are equipped with Skoda Fabia and Skoda Roomster, are made exclusively at the German Volkswagen plant in Chemnitz. With such a motor, our Polo sedan was not bad for 32 thousand kilometers of highly rigid resource tests (AR№23, 2011), equal to 100-thousand runs under normal conditions, and then firmly worked in the editorial office "by farm", roll out another 72 thousand kilometers.
It must be said that on the second segment of the life path managed Polo-sedan drivers with completely different driving manners and temperament. Therefore, the claims for the car were sometimes completely polar. One, for example, complained that "the speed at the track slowly grows up," and the other was compiled on the sluggish dynamics on the fifth gear, if at 900 rpm to add a gas. In a word, a uniform and gentle handling of entrusted technique and was not close. But the engine oil changed exactly on time - and it was not bought out ababa, but only with factual tolerances.
Compression in all cylinders is normal - it means that the health of the motor is still in order
The fact that we did not notice the "excess" tapping ourselves are most likely due to the fact that our engine has started to surveny for some time ago - somewhere there happened. But she listened more carefully - and even with this "muffler" caught after the cold start of the "diesel" tapura, exactly the same as on the audio recordings posted on the network. After five minutes, the knock smoothly went to no, why I would not call him dangerous. And yet it is unpleasant: what to knock something?
Before disassembly, by itself, I measured compression and oil pressure. Both parameters were at the height, as if there was no solid run.
On the top of the cylinder mirror is visible from the piston smoke
I begin to "undress" the motor, I dug up to the heat shield of the exhaust manifold, and then the zamanka: the bolts of the coolness "Zakisli" tightly - had to "Bulgar". When the screen disappeared, a five-meantimeter crack opened the eye in the steel collector, through which the spent gases broke out. The collector I immediately brewed, because because of the cracks to give more than 47 thousand rubles for a new node, one with the neutralizer seemed unreasonable. But be our Polo under warranty, a new catcollectser would be given to me for a gift: the cases of the rogarov are not single, and the dealers are changing collectors, and instead they are upgraded.
Pistons of the EM series: on the head - distinct traces of touching the cylinder
Skeeping inserts Only slightly worn
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After removing the head and the pallet, I remove the pistons with connecting rods. The details are definitely done, but it will take close catastrophes and in risen. And the reason for the knocks is obvious! The "our" pistons showed traces of contact above the rings, at the bottom of the bottom, in the swing plane, and the fairness of the skirts, and on the mirror of the walls of the cylinders - the corresponding response marks. Hard shut down piston! And contribute to this high degree of compression 10.5: 1 in a combination with a small friction area at the skirt - its guide properties are weak. Run ahead, I will say that Volkswagen specialists are blamed in the emergence of knocks and domestic gasoline - Combustion, they say, it turns out more "tough" than it was calculated. And they say, the same gasoline affects the same motor oil, reducing lubricating properties. From here and wear.
