Operation Skoda Octavia A5 Over time, it reveals hidden problems that at first glance seem trivial, but ultimately lead to serious damage. One of the most common causes of vibrations, knocking and jerking during acceleration is wear power unit supports. These elements serve as shock absorbers, dampening vibrations from the operation of the engine and transmission, transferring them to the car body in a minimal volume.
Ignoring signs of malfunction can lead to ruptured hoses, damaged wiring, and even deformation of engine mount components. Owners Octavia A5 Often they are faced with the fact that replacing one cushion does not completely solve the problem, since wear usually occurs on all supports at the same time. Therefore, the correct approach to diagnosis and selection of spare parts is critical to restoring a comfortable ride.
Main symptoms of engine mount wear
The first warning sign is the appearance of a characteristic vibrations on the steering wheel and driver's seats, especially when the engine is idling. If the vibration disappears when the engine is turned off or when driving, with a 90% probability the problem lies in the rubber-metal mounts. Over time, rubber hardens, cracks and loses its damping properties.
The second obvious sign is the appearance metallic knocks in the engine compartment when driving over uneven surfaces or during a sudden start from a standstill. The sound resembles metal hitting metal, which indicates complete destruction of the rubber part of the support and lack of shock absorption. In such cases, the engine begins to “walk” in the engine compartment, hitting body elements.
In addition, it is worth paying attention to the behavior of the car when changing gears. If the engine jumps too much when shifting from first to second or when braking hard, this is a sure sign that pillar or foothold stopped performing their function. In some cases, the engine may move to the side, which can be seen during visual inspection.
- 🚗 Increased vibration at idle speeds transmitted to the steering wheel and body
- 🔊 Characteristic knocks and blows at the start from the place and passing of the lying police
- 🔧 Prominent displacement of the engine in the under-hood space during sharp maneuvers
- 💥 Rubber breaks and visible cracks on the support body during visual inspection
Design features of supports on Octavia A5
Design of engine suspension on Octavia A5 It depends on the type of power unit installed and the year of release of the car. Usually, the system consists of three main elements: two upper supports attached to the body, and one lower support connecting the engine to the gearbox or subframe. Each of these supports has its own specifics and service life.
The upper supports are most often rubber metal products where the rubber element is under compression or shear load. The lower support, often referred to as the “bone” or “triangle,” operates under more stringent conditions and experiences significant dynamic loads. It is the first to fail in an aggressive driving style.
It is important to understand that on 1.6 MPI and 1.4 TSI engines, the mounting design may differ. For example, on turbo versions, the load on the transmission support is higher due to torque. Therefore, it is necessary to know exactly when replacing catalog number details that match your VIN code to avoid errors in selection.
⚠️ Warning: Never try to replace only one upper support if the vehicle is over 100,000 km away. Rubber ages the same on all elements, and the new support will quickly overload, as the old will not extinguish the vibration.
- 1.6 MPI (atmospheric)
- 1.4 TSI (turbo)
- 1.8 TSI (turbo)
- 2.0 TDI (diesel)
Selection of spare parts: original or analogues?
The spare parts market offers a wide range of options: from original products Skoda budget analogues from third-party manufacturers. The original engine cushions are usually supplied in the packaging of the VAG concern and have the best quality rubber, but are much more expensive. Their resource is an average of 100-120 thousand kilometers with careful driving.
Analogs from trusted brands such as Lemförder, Febi Bilstein or SWAGThey are often not worse than the original, and sometimes exceed it in quality materials. These companies are official suppliers on conveyors, so their products have identical characteristics. However, the market is flooded with cheap fakes that could fall apart in a couple of thousand kilometers.
When choosing, you should focus not only on the price, but also on the reputation of the supplier. Cheap Chinese counterparts often use low-quality rubber that smacks quickly in the cold or, conversely, floats in the summer. As a result, rigidity The ride is changing and the comfort of the ride returns to its original state.
| Manufacturer | Product type | Average price (RUB) | Resource (km) | Comment |
|---|---|---|---|---|
| Skoda (Original) | Rubber-metal support | 4500 - 7000 | 100 000+ | Perfect quality, high price |
| Lemförder | Analogue (OEM supplier) | 3000 - 5000 | 90 000 - 110 000 | Excellent price-quality ratio |
| Febi Bilstein | Analogue | 2500 - 4000 | 80 000 - 100 000 | Reliable option for medium operation |
| Budget brands | Analogue | 1000 - 2000 | 30 000 - 50 000 | Risk of rapid wear, low quality rubber |
⚠️ Warning: Avoid buying supports without packaging or with damaged markings. Fake parts often lack protective holograms and have rough traces of casting on the metal part.
Before buying, be sure to compare the catalog numbers on the package and on the old part. Sometimes the manufacturer changes the design of the support in the process of releasing one model, and the old numbers may not come up with a new revision.
Preparation for work and necessary tools
The process of replacing the engine supports requires a lift or observation hole, since access to the lower support from below is extremely limited. You will also need a reliable set of tools: head on 16, 18, 21 and 24, dynamometer key, jack and special stands for the engine. Without proper fixation of the power unit, work is impossible and dangerous.
To dismantle old supports often have to make a considerable effort, as bolts can be clumsy due to corrosion and dirt. It is recommended to pre-treat all threaded connections with penetrating lubricant, for example, WD-40 Or analog, and leave for 15-20 minutes. This will make it easier to unscrew and prevent the thread from breaking.
It is important to prepare a place for the installation of the engine, since when unscrewing the lower mounts, it will lose support. Use a hydraulic jack with a wooden frame under the pallet of the crankcase to distribute the load and not damage the aluminum pan cover. Security This is a priority, so the engine must be securely fixed.
☑️ Preparing to replace supports
Step-by-step instructions for replacing supports
Start by removing the top support of the engine. To do this, you need to remove the plastic decorative casing of the engine, unscrew the nuts of the support attachment to the body. Usually the nuts are used on 18 or 21. After unscrewing the fastener, the support is removed along with the bolts that may fall out.
Then move to the lower support. Lift the engine with a jack to take the load off the mount. Unscrew the bolts connecting the support to the subframe and engine. It often requires an assistant to hold the support or engine in the right position. Remove the old support by comparing it to the new one.
The installation of new supports is carried out in reverse order. It is important not to tighten bolts to the end at once, but first to cash them in to level all the holes. Only after the engine is lowered to its regular seats and the load is distributed evenly, it is possible to produce a new engine. finale with the recommended force.
Features of replacing the left support
The left support (subframe) often requires removal of the wheel arch for ease of access. If the bolts are stuck, you may need to use an impact driver or heat the bolt before removing it.
⚠️ Attention: Never tighten the mounting bolts while the engine is hanging on a jack! Tightening should only be done under a load that simulates the condition of a car on wheels, otherwise the rubber will be twisted and quickly destroyed.
After completing the work, check that the installation is correct. The engine should not be distorted, and the gaps between the power unit and the body should be uniform. Start the engine and make sure there are no vibrations. If necessary, adjust the engine position by slightly jacking it up.
The final tightening of the support bolts must be carried out strictly under a load on the engine that simulates vehicle movement on the road, otherwise the service life of the new parts will be sharply reduced.
Frequent errors and operating tips
One of the most common mistakes is skimping on the quality of spare parts. Buying the cheapest analogues leads to the fact that after a month the vibrations return, and sometimes even intensify. Cheap rubber cannot withstand temperature changes and the chemical effects of oil, quickly losing elasticity.
Another mistake is ignoring the condition of other engine mount elements. Often, the silent blocks of the subframe or generator mounts wear out along with the supports. If they are not replaced, the new supports will be exposed to extreme conditions, shortening their lifespan.
To prolong the service life of the supports, try to avoid sudden starts with slipping and overly aggressive driving. It is also important to monitor the condition of the engine oil pan, as damage to it can lead to oil leakage, which destroys the rubber elements of the supports.
Why do new supports creak?
Sometimes new supports may creak in the first 500-1000 km. This is normal, as the rubber is “grinding in.” If the creaking does not go away, check that the bolts are tightened correctly and that there are no distortions.
FAQ: Frequently asked questions
How long does it take to replace all engine mounts?
If you have a lift and work experience, the procedure for replacing all three supports takes from 1.5 to 2.5 hours. If you work in a pit without an assistant, the time can increase to 3-4 hours due to the difficulty of accessing the lower bolts.
Is it possible to drive with one broken airbag?
Short-term - yes, but it is highly not recommended. Driving with a broken support creates an increased load on other suspension elements and can lead to rupture of hoses, damage to wiring, and even to engine failure in the engine compartment during sudden braking.
Do I need to do a wheel alignment after replacing the bearings?
No, replacing engine mounts does not affect wheel alignment unless the subframe or suspension components are removed. Wheel alignment is required only when interfering with the geometry of the chassis.
Which pillow fails most often?
Most often, the lower support (gearbox support) breaks first, since it takes on the maximum torques and dynamic loads. However, on 1.6 MPI engines, the left upper support is often the first to suffer due to the design of the mount.
Is it possible to replace the support with your own hands without a hole?
It is theoretically possible if you have a powerful jack and reliable stands, but this is very inconvenient and dangerous. Without access from below, it is almost impossible to unscrew the lower bolts, and the risk of the engine falling onto a person or body is too great.