Car owners Skoda Superb Often faced with the dilemma: change the belt or chain of the gas distribution mechanism, and when it is better to do it. The reliability of the power units of this model directly depends on the timely maintenance of the node responsible for synchronizing the operation of the piston group and valves. Ignoring routine work can lead to fatal consequences for the engine.
Depending on the year of production and the type of engine, either a belt or a HRM chain is installed in your car. On older atmospheric engines, the belt is more common, whereas modern turbo versions are more common. TSI They're equipped with chain gear. Understanding the design of your Skoda Superb The first step to extending the life of the car without unnecessary costs.
Replacement schedule and service intervals
Manufacturer Skoda It sets a strict framework for maintenance. For belt-driven engines, the standard replacement interval is 210,000 km or every 10 years, whichever comes first. However, real-world operating conditions in our climate often require more frequent replacements.
The chain mechanisms installed on the EA888 and EA211 series engines are theoretically designed for the entire life of the car. But practice shows that the chain life can be reduced due to the quality of fuel and oil. If you exploit Skoda Superb In the start-stop mode or often drive on traffic jams, the chain can stretch as early as 150,000 km.
It is important to take into account the following factors affecting the service life:
- ๐ง Quality of engine oil and regularity of its replacement (at least 7500 km).
- ๐ง Car operation mode (city, track, sports style).
- ๐ง Ambient temperature and condition of the cooling system.
Types of engines and features of their timing system
Model range Skoda Superb It offers a wide range of power units, each of which has its own nuances. The 1.2 TSI and 1.4 TSI engines are equipped with a chain drive of the HRM, which is located on the flywheel side. This makes it more difficult to access the mechanism and increases the cost of replacement work.
Older versions with a 1.6 MPI engine use the classic belt drive. The belt is on the side of the attachments, which makes the replacement easier and cheaper procedure. However, the belt requires strict observance of replacement times, since its break is guaranteed to lead to a meeting of valves with pistons.
The 1.8 TSI and 2.0 TSI engines have specific problems with the chain tensioners. Early versions used hydraulic tensioners that could jam in cold start. In more recent models Skoda Superb This problem has been solved, but the chain condition monitoring is still mandatory.
If you are not sure about the type of engine you have, check the VIN code or look under the hood. The presence of the belt is visible immediately, and the chain is hidden behind plastic and metal casings.
Symptoms of belt and chain wear
It is difficult to determine the wear of the HRM at an early stage, since the mechanism works inside the engine. However, there are indirect signs that will suggest that it is time to go to the service. If you have a problem with the circuit, you may hear metal ringing or clanging on the cold engine, especially in the first seconds after starting.
If on your Skoda Superb the belt is installed, its condition can be checked visually by removing the protective casing. Pay attention to the presence of cracks, layers and traces of oil on the surface. Even one crack is a reason to replace immediately, as the belt can break at any time.
- ๐จ The appearance of valve timing errors on the dashboard.
- ๐จ Unstable engine operation at idle speed.
- ๐จ Increased fuel consumption and loss of power.
- ๐จ The characteristic noise of metal friction against metal when the motor is working.
โ ๏ธ Warning: If you hear a rattle or clanging when starting the engine that disappears after a couple of seconds, this is a sure sign of wear of the chain tensioner or the chain itself. Do not delay the visit to the service, as missing teeth can lead to deformation of the valves.
In some cases, computer diagnostics will show a deviation of the angles of ignition advance. This is due to the fact that the stretched chain shifts the gas distribution phases relative to the crankshaft. Diagnostics with a scanner It allows you to identify the problem before it leads to serious breakdowns.
- 1.6 MPI (Stripe)
- 1.2/1.4 TSI (Chain)
- 1.8/2.0 TSI (Chain)
- Diesel 1.6/2.0 TDI
Replacement procedure and required tools
Replacing the timing belt with Skoda Superb It is a complex technical procedure that requires specialized tools and skills. For belt-driven engines, a set of keys, a dynamometer key, devices for turning the crankshaft and tensioning the belt will be required.
When replacing the circuit on TSI motors, the process is much more complicated. The subframe must be removed, the engine may require dismantling or lifting to access the back of the unit. It is also often necessary to replace the oil pump and gaskets, as they are in the access area.
โ๏ธ Preparing to replace the timing belt
It is important to put the labels correctly. On the crankshaft and camshafts there are special marks that should coincide with the risks on the cylinder block and the block head. An error even in one tooth will lead to a violation of phases and improper operation of the engine.
For modern engines TSI Special cements are often used. These devices allow you to fix the shafts in the right position to exclude displacement when removing the chain. Using inappropriate tools can damage the gear teeth.
Hidden nuances of chain replacement
When replacing the chain with 1.8 TSI, the tensioner and sedatives are often required. It is also recommended to check the condition of camshafts, as their replacement in the future will require re-removal of the chain.
After assembly, it is necessary to start the engine and check its operation. Listen to sounds, watch oil pressure and temperature. If everything is normal, you can take a test trip.
Selection of spare parts: original or analogues?
The quality of the spare parts for the timing system is critical. Cheap analogues often do not care for even half of the declared resource. For Skoda Superb It is recommended to use original sets from VAG or trusted brands such as Gates, Continental or INA.
When choosing a set, pay attention to the complete set. The original set often includes not only a belt or chain, but also tensioners, rollers, sedators and gaskets. Buying individual items can be unprofitable and less reliable.
The prices of original parts are much higher, but this is a guarantee of long service. Savings on the HRM can lead to major repairs of the engine, the cost of which will exceed the savings on spare parts many times over.
The table below shows the approximate prices for sets for different engines:
| Engine type | Drive type | Price of the kit (ruble) | Recommended Brand |
|---|---|---|---|
| 1.6 MPI | Belt | 5 000 - 8 000 | Gates, Continental |
| 1.2 TSI | Chain | 12 000 - 18 000 | Skoda Original, INA |
| 1.8 TSI | Chain | 15 000 - 25 000 | Skoda Original, Febi |
| 2.0 TDI | Belt | 8 000 - 12 000 | ContiTech, Gates |
โ ๏ธ Warning: Never try to save money by buying a belt without rollers and tensioners. Wear of the old roller can lead to a jump of the new belt in the first thousand kilometers of run.
Before buying spare parts, be sure to check the catalog numbers with the VIN code of your car. The design of the HRM can change even within one model of the year of release.
Cost of work and service
The cost of replacement of the engine depends on the complexity of the engine design and the selected service. At the maintenance station Skoda The prices will be higher, but you will get a guarantee and use of original tools.
To replace the belt with 1.6 MPI, the work will take about 3-4 hours. Replacing the circuit with 1.8 TSI can take a whole day due to the need to dismantle the subframe and other nodes. Do not try to do this yourself unless you have experience and specialized equipment.
In addition to the cost of spare parts and work, consider the need to replace oil and filters after the chain is replaced, as during dismantling, there is often a loss of lubrication or dirt entering the system.
Regular maintenance and timely replacement of the HRM is an investment in the longevity of your car. Ignoring the manufacturerโs recommendations can lead to costly repairs in the future.
Replacing the HRM on the Skoda Superb is a critical procedure that cannot be put off. The choice of quality spare parts and professional installation will ensure the reliability of the engine for many years.
FAQ: Frequently asked questions
Can I drive if the belt is worn out but not torn?
It's not recommended. A worn belt can break off at any time, which will lead to a meeting of valves with pistons and expensive engine repairs. It is better to replace it immediately after detecting signs of wear.
How often should I check the timing system circuit on the Skoda Superb?
It is recommended to check the condition of the circuit at each planned scheduled maintenance, especially if you hear extraneous noises. Computer diagnostics also allows you to track the stretching of the chain by phase deviation.
What if the engine is not working smoothly after replacement?
This may be due to improper labeling, sensor malfunction, or the presence of air in the system. It is necessary to conduct a re-diagnosis and check the installation of phases.
Should I change the water pump when replacing the belt?
Yes, it is highly recommended to change the water pump at the same time as the timing belt, since its resource is comparable, and access to it is difficult. This will save you money on re-disassembly in the future.
How long does it take to replace the timing chain with 1.8 TSI?
The average process takes 6 to 10 hours depending on the skill of the master and the availability of a specialized tool. In some cases, more time is required due to the difficulty of accessing the node.