1.2 liter engine installed on Skoda Fabia, has become one of the most popular in the line of the Czech automaker. However, its compactness and efficiency come at the price of increased attention to the gas distribution system. Improper operation or ignoring maintenance regulations can lead to fatal consequences for the power unit.
Many owners mistakenly believe that the belt lasts forever until it breaks. In fact timing belt replacement is a planned procedure on which the life of the piston group depends. In this article we will look in detail at how to determine the need for replacement, which components to choose and how much it costs.
Replacement intervals and signs of wear
Manufacturing plant Skoda recommends replacement timing belt every 60,000 kilometers or every 4 years, whichever comes first. However, the actual service life often depends on operating conditions: in conditions of dusty roads or frequent short trips, wear occurs faster.
The critical moment comes when the belt loses its elasticity or cracks appear on it. Pay attention to the condition of the surface: even small nicks on the working part indicate an imminent break. Don't wait for the engine to knock - prevention is cheaper than repairs.
If you notice the following symptoms, you should not postpone your visit to the service:
- ๐ง The appearance of extraneous noise or whistling from under the hood when starting the engine.
- ๐ง The engine is unstable, stalls or loses power at low speeds.
- ๐ง Difficulty starting the engine, especially in the cold season.
Design features of 1.2 TSI and MPI engines
On Skoda Fabia Various modifications of 1.2 liter engines were installed. These can be naturally aspirated MPI versions (CBZA, CBZB) or turbocharged TSI (CBZC, CAXA). Each of them has its own nuances. Atmospheric engines are considered more reliable, but they are also subject to belt stretching.
The 1.2 TSI turbocharged versions require special attention to the tension rollers. They often use a hydraulic tensioner, which can leak or lose pressure. If the tension weakens, the belt will jump a couple of teeth, which will lead to a violation of the valve timing.
It is important to understand that these motors use intake camshaft with a phase shifter. Any deviation in the operation of the belt immediately affects the operation of the phase shifter and, as a result, fuel consumption and acceleration dynamics.
Choice of components: original or analogues?
When choosing spare parts for Skoda Fabia 1.2 you should not skimp on critical components. The original VAG kit includes the belt itself, a tension pulley and, often, a water pump. However, the original may be overpriced.
There are trusted manufacturers whose kits are not inferior to the original in quality. This Gates, ContiTech, INA and SKF. It is these brands that often supply components to the assembly line, so their products are the best choice for replacement.
Never change just the belt. Always replace the entire kit, including:
- ๐ ๏ธ Tensioner roller - it has its own resource and often fails before the belt.
- ๐ ๏ธ Idler roller - serves to correctly guide the belt and reduce vibrations.
- ๐ ๏ธ Pump (water pump) - if it fails later, you will have to disassemble the engine again to replace the belt.
- According to the regulations
- When it breaks
- Once every 80,000 km
- I don't know when they changed it
What happens if you put on a cheap video?
Cheap rollers often have low-quality bearings. After 10-15 thousand kilometers they begin to hum and then jam. A jammed roller instantly tears the belt, which on 1.2 interference engines leads to bending of the valves and major repairs.
Replacement procedure and required tools
Replacement timing belt on Skoda Fabia 1.2 is a labor-intensive operation that requires specialized tools. Without special camshaft and crankshaft clamps, it will definitely not be possible to set the marks. An error of even half a tooth can lead to improper engine operation.
The process begins by removing the protective covers and the right wheel. The top engine mount must be removed to gain access to the top of the belt. Next, the belt of the auxiliary units (generator and air conditioner) is removed.
For quality work you will need the following set:
- ๐ฉ Special set of timing belt clamps for VW Group 1.2 engines.
- ๐ฉ A torque wrench for tightening bolts to a certain torque.
- ๐ฉ Puller for dismantling pulleys and rollers.
โ๏ธ Preparing to replace the timing belt
โ ๏ธ Attention: Before starting work, be sure to disconnect the negative terminal of the battery. On 1.2 TSI engines there is a risk of a short circuit when removing attachments, which can damage the electronic control units.
Cost of work and average prices for spare parts
Many car owners are interested in how much it will cost to replace a timing belt with Skoda Fabia. The price consists of the cost of components and service work. The original can cost from 15,000 rubles, while a high-quality analogue costs about 8,000 - 10,000 rubles.
Work in a specialized service usually costs from 5,000 to 9,000 rubles. At dealerships, the cost can be significantly higher due to markups on parts and high hourly rates.
Below is an approximate table of prices for spare parts and labor for various regions:
| Name | Original (RUB) | Analog (RUB) | Work (rub.) |
|---|---|---|---|
| Timing kit (belt + rollers) | 14 500 - 18 000 | 7 500 - 9 500 | - |
| Water pump (pump) | 4 000 - 6 000 | 2 500 - 3 500 | - |
| Alternator belt (assembly) | 2 500 - 3 500 | 1 200 - 1 800 | - |
| Timing belt replacement work | - | - | 5 000 - 9 000 |
| Antifreeze fluid (top up/replace) | 1 500 - 2 500 | 800 - 1 200 | - |
Saving on components when replacing a timing belt is a high-risk lottery. A cheap belt may not last even half of its declared life, which will lead to expensive engine repairs.
Consequences of belt breakage and risks
Engines 1.2 liters Skoda Fabia are interference. This means that when the belt breaks, the pistons encounter open valves. The result is always the same - bending of the valves, and in the worst case - damage to the pistons and cylinder walls.
Repair after a break requires complete disassembly of the engine, replacement of valves, grinding in of seats and often replacement of the piston group. The cost of such repairs exceeds the cost of replacing the timing belt by 5-7 times. The risk of a break increases to 70-80 thousand kilometers if the regulations are violated.
You should not hope that the belt is โstill fitโ. Modern belts look very durable, but their rubber base hardens and loses elasticity over time. A visual inspection does not always provide a complete picture of the condition of internal fittings.
If you are planning on selling your car, be sure to replace the timing belt and change the oil before doing so. Having a receipt for a fresh timing belt replacement will significantly increase the liquidity of your Skoda Fabia on the secondary market.
Common mistakes when replacing yourself
Many car owners try to save money by making the replacement themselves. However, without experience and the right tools, this is fraught with mistakes. The most common problem is incorrect installation of labels. If the crankshaft or camshafts are not aligned correctly, the engine will not run properly.
Another mistake is incorrect belt tension. Too little tension will lead to slipping and jumping; too much tension will cause rapid wear of the roller bearings and pump. The tension roller must be installed strictly according to the instructions using a torque wrench.
Never turn the engine counterclockwise with the key. This can damage the belt teeth or knock off the marks if they are already aligned. Rotation must occur strictly in the direction of movement of the clock hand.
- โ Forgetting to change the pump along with the belt.
- โ Use the old crankshaft pulley bolt (it is disposable).
- โ Ignore the condition of the crankshaft seals during assembly.
โ ๏ธ Attention: On 1.2 TSI engines, the crankshaft pulley bolt is a one-time use. After unscrewing, it must be replaced with a new one. Reusing an old bolt can cause it to break off while running, with disastrous consequences.
FAQ: Frequently asked questions
Is it possible to replace the timing belt yourself without special tools?
Theoretically it is possible, but it is highly not recommended. Without camshaft and crankshaft clamps, it is impossible to guarantee the accuracy of the timing. An error of 1-2 degrees will lead to loss of power and increased fuel consumption.
Do I need to change the alternator belt when replacing the timing belt?
Yes, it makes sense. The alternator belt is in the access area when replacing the timing belt. If it is already worn out, it is better to replace it immediately so as not to disassemble the engine again in a couple of months. This will save money on future work.
What is the service life of the timing belt on the 1.2 TSI?
Factory specification: 60,000 km or 4 years. However, experienced mechanics recommend changing it every 50,000 km, since turbocharged engines operate in more severe temperature conditions, which accelerates the aging of rubber.
What should I do if the belt is noisy after replacement?
The belt may be too tight or the roller may be of poor quality. Noise can also occur due to oil getting on the belt. Check the condition of the camshaft and crankshaft seals.
Do I need to change antifreeze when replacing the timing belt?
If you drained the antifreeze when replacing the pump, then yes, it needs to be replaced. If you changed the pump without draining the entire system (which is not recommended), then simply top up the level. Antifreeze is usually changed every 3-4 years, combining this with replacing the timing belt.