Car Nissan Almera Classic It is distinguished by a reliable design of the suspension and power unit, however, even such durable components require timely maintenance. One of the most vulnerable points in the engine mounting system is the front cushion, which takes on the main vibration and shock loads. If you feel a characteristic shaking of the steering wheel at idle or notice a beating when starting from a stop, the problem most likely lies in this element.
Ignoring wear symptoms can lead to serious consequences for the entire transmission. Front support It doesn’t just hold the engine, it dampens dynamic vibrations, preventing the destruction of body elements and adjacent components. Owners often put off visiting a service station until a loud knocking noise appears, but this is a mistake that can result in expensive transmission repairs or ruptured cooling pipes due to engine misalignment.
In this article we will look in detail at how to recognize a malfunction, what original spare parts It’s worth choosing and how to perform the replacement yourself, saving on service costs. We will also pay attention to the nuances of dismantling and installation, which are often missed in standard instructions, but which are critical for the correct operation of the unit.
The role of the front support in the engine mounting system
In design Nissan Almera Classic with a 1.6 liter engine (QG16DE series), a complex power unit suspension scheme is used. The front mount, often called the top mount, connects the cylinder block to the body frame member. Its main task is to compensate for engine jerks during sudden acceleration or braking, as well as to isolate vibrations from vibrations that occur during operation of the piston group.
The design of the support is a metal bracket, inside of which there is a massive rubber-metal element. Exactly rubber insert responsible for damping. Over time, rubber loses its elastic properties and cracks and tears, resulting in harsh metal-to-metal contact. At this point, you begin to hear a characteristic knocking sound when driving over bumps or changing gears.
It is important to understand that the load is distributed unevenly. When starting from a standstill, the front support experiences a colossal breaking force, as the engine tends to tilt backwards. If mounting bolts are weakened or the support itself is defective, this can lead to thread failure in the spar, which is an extremely serious problem for a sedan body.
⚠️ Attention! Driving with a torn front air mount can cause the engine to become dislodged so much that the coolant hose or wiring begins to contact rotating parts of the alternator or timing belt, causing instantaneous destruction.
Symptoms and methods for diagnosing a malfunction
You can determine the wear of the front support both visually and by ear. The very first and surest sign is vibration of the steering wheel and pedals at idle, which disappears when you release the clutch (if it is a manual transmission) or switch to mode D (if it is an automatic transmission). This suggests that vibration from the engine is directly transmitted to the body, bypassing the damping element.
The second symptom is the appearance of a dull knock when driving over small irregularities or during sudden starts and braking. The knocking noise occurs in the front part of the engine compartment; it can often be confused with a malfunction of the shock absorbers, but when checking pendants they turn out to be whole. To accurately localize the sound, have an assistant turn the steering wheel or step on the gas while you listen under the hood.
For a visual inspection, you will need a pit or a lift, or a jack to lift the engine. It is necessary to inspect the rubber part of the support for cracks, delamination or complete rupture. Also check the condition of the metal bracket: it should not show signs of corrosion or deformation. Mounting bolts must be tightened to a certain torque; the absence of traces of paint stripping on the bolts and head may indicate spontaneous unscrewing.
- 🔍 Visual inspection of rubber for cracks and tears through the inspection hole.
- 🔨 Checking engine play by rocking the unit with a pry bar with the ignition off.
- 🎧 Listening to characteristic knocks when sharply shifting the gas in neutral gear.
- 📏 Measuring the gaps between the engine and the body at the mounting points of the supports.
- Strong steering wheel vibration
- Clunking sound when driving
- Visual tear in rubber
- Not sure about symptoms
Choosing the right spare part: Original or analogue
When choosing a new front airbag for Nissan Almera Classic It is worth considering that the market offers many options. The original part has an article number that guarantees compliance with the factory specifications for rubber hardness and elasticity. However, the cost of the original is often overpriced, which pushes owners to look for high-quality analogues.
The most popular and trusted manufacturers of spare parts are Corteco, Febi and Sasic. These brands produce parts that are as durable as the original, and sometimes even exceed it thanks to the use of more modern rubber compounds. It is important to avoid cheap Chinese copies, as their tires often become dull after just a few months of use in our climatic conditions.
When purchasing, be sure to check the packaging and the presence of protective holograms. The original part must be clearly marked and free from casting defects. If you choose an analogue, give preference to those brands that have quality certificates and positive reviews from specialized communities of owners Nissan.
| Manufacturer | Product type | Approximate article | Indicative resource |
|---|---|---|---|
| Nissan (Original) | Rubber-metal support | 11202-AX00A | 100,000+ km |
| Corteco | High quality analogue | 80000824H | 80,000 - 100,000 km |
| Febi Bilstein | Analogue | 32896 | 70,000 - 90,000 km |
| Dubious analogues | Low quality | Various | 15,000 - 30,000 km |
⚠️ Attention! Do not buy “custom-made” supports from unknown sites without reviews. A counterfeit may not have the correct stiffness, which will cause the transmission to wear out quickly and create new vibrations that you will not be able to eliminate.
Preparing tools and work area
The process of replacing the front airbag does not require highly complex equipment, but it cannot be done without reliable engine lifting. You will need two jacks: one to lift the car and one to support the oil pan. Be sure to place a piece of thick board or car wheel under the pallet so as not to damage the aluminum pallet.
The list of required tools includes a standard set of sockets and wrenches. The main ones will be 14, 17 and 19 mm heads, as well as extensions and wrenches. To unscrew soured bolts, it is better to have on hand a can of penetrating lubricant such as WD-40 or an equivalent, as well as a pry bar for lever action.
Do not forget to prepare a container for draining the coolant if, during dismantling, you have to remove the radiator or expansion tank pipes, which may interfere with access to the upper mounting bolts. Also have rags and personal protective equipment ready, as it can be dirty under the machine.
- 🛠 Set of sockets: 14, 17, 19 mm with extensions and ratchet.
- 🏗 Two jacks: one for the car, the second to support the engine.
- 💧 A container for draining antifreeze and a set of keys for pipes.
- 🧴 Penetrating lubricant (WD-40, Liqui Moly) and a metal brush.
☑️ Preparation for replacement
Step-by-step instructions for replacing the support
Begin by disconnecting the battery to avoid accidental short circuits when working on nearby wiring. Then remove the plastic engine guard by unscrewing the fasteners and disconnecting the sensor connectors if they pass through it. This will provide better access to the top of the support.
Raise the car and place it on safety stands. Place a second jack with a wooden spacer under the engine and carefully lift the unit so that the weight of the engine transfers to the jack, but not too much so as not to damage the pipes. Unscrew the nuts securing the support to the side member and the bolts securing it to the engine bracket.
After removing the old support, be sure to clean the installation areas from dirt and rust. Apply a small amount of graphite lubricant to the threads of new bolts to make them easy to remove in the future. Install the new support, aligning the holes, and tighten the fasteners by hand to prevent distortion.
Lower the engine onto the support, making sure it fits into place without moving. Tighten the bolts securing the side member and bracket. It is important to follow the tightening sequence and use a torque wrench if you have one. The tightening torque must comply with the manufacturer's specifications.
Replace the plastic cover, connect the battery and start the engine. Check the operation of the unit at idle speed and when revving. If the knocking noises have disappeared and the vibration has decreased, the work has been completed successfully. Check the tightening of the bolts after 500 km.