Car Nissan Primera P12 is famous for its reliability and comfortable suspension, but with age, many owners are faced with the problem of vibrations and shocks in the engine compartment area. Most often, the culprits of these troubles are engine mounts, which are popularly called engine mounts. These elements play a critical role in dampening vibrations created by the power unit and ensuring its correct position in the engine compartment.
Ignoring the symptoms of wear on supports can lead to serious consequences, including damage to attachments or rupture of pipes. Owners Nissan Primera P12 you need to understand that replacing pillows is not just a recommendation, but a necessity when the first signs of damage appear. In this article we will look in detail at how to diagnose a malfunction, which parts to choose and how to properly carry out repair work yourself.
Signs of wear and diagnostics of engine mounts
The first and most obvious signal that engine mounts require replacement, is the appearance of strong vibration on the steering wheel and in the area of ββthe gearshift lever. This usually happens at idle speed or when the engine is running while the car is stationary. If you feel like the body Nissan Primera P12 trembles more than usual, you should immediately check the condition of the rubber-metal elements.
The second characteristic sign is knocking and knocking, especially during sudden starts or braking. The engine begins to shift in the engine compartment, and its moving parts may touch body or suspension elements. The sound often resembles a dull thud of metal on metal, which can be heard even in the cabin. Please note that vibration may increase when the air conditioner is turned on or when changing gears.
A visual inspection also provides a lot of information. The rubber of the supports may crack, delaminate, or completely collapse. In some cases, the hydraulic part of the support (if provided for in the design) may leak, which will lead to loss of damping properties. Don't forget to check the condition of the fastening bolts - sometimes the problem lies not in the pillow itself, but in a broken thread or a broken cup.
- β Strong vibration of the steering wheel and seats at idle
- β Loud knocks when starting or braking
- β Visual cracks or tears in the rubber on the supports
β οΈ Attention: If you notice that the engine has moved from its normal position, do not continue to operate the vehicle until the problem is corrected. This could lead to broken cooling system hoses or damaged wiring.
Design features of Nissan Primera P12 supports
Engine mount design Nissan Primera P12 has its own unique features that are important to consider when repairing. Typically the system consists of three or four supports, each of which performs its own function. The front support is often the main bearing, and the rear and side ones serve to limit the amplitude of vibrations. It is important to understand that they all work in conjunction, and the failure of one leads to overload of the others.
On series engines QG and QG18DE, which are most common in Nissan Primera P12, both conventional rubber supports and hydraulic ones are used. Hydraulic mounts provide better comfort as they dampen high-frequency vibrations more effectively. However, they are more complex to manufacture and therefore more expensive to replace. If you are planning a replacement, it is important to decide whether you will install the original or an analogue, and which type to prefer.
Particular attention should be paid to attaching the support to the body and to the oil pan. In some cases, wear occurs precisely at the joints, where the metal can deform under load. Before purchasing new spare parts, it is necessary to assess the condition of the seats. If the seat is damaged, simply replacing the seat will not solve the vibration problem.
- π§ Front support - carries the main load during acceleration
- π§ Right support - dampens engine torsional vibrations
- π§ Left support - limits the displacement of the unit in the transverse plane
- QG18DE
- QG20DE
- CD20DT
- QR20DE
Selection of quality spare parts and analogues
Spare parts market for Nissan Primera P12 offers a huge selection of options, from original products to budget analogues. Original marked with code Nissan, provides the best rubber quality and geometry accuracy. However, the cost of original pillows can be quite high, which forces many car owners to look for alternatives.
Among the trusted manufacturers of analogues, we can highlight brands Febi, Sasic, Kayaba and Patron. These companies offer products that are often not inferior to the original in terms of resources, but are cheaper. It is important to choose spare parts that have a warranty and positive reviews from other users. Cheap Chinese analogues often have low quality rubber, which quickly hardens in the cold or cracks from vibration.
When choosing, you should also take into account the year of manufacture of the car and engine modification. For diesel versions CD20DT the load on the supports is much higher, so it is better not to save money here and install the most reliable products. For gasoline engines QG16DE or QG18DE It is permissible to use more budget options, but with caution.
| Support type | Original number | Popular analogues | Average price |
|---|---|---|---|
| Front support | 11201-2Y20A | Febi, Sasic | 3500 - 5000 rub. |
| Right support | 11202-3Y20A | Kayaba, Patron | 2500 - 4000 rub. |
| Left support | 11203-3Y20A | Febi, Mapco | 2000 - 3500 rub. |
| Transmission support | 11204-3Y20A | Febi, Stellox | 1500 - 2500 rub. |
β οΈ Attention: Never buy engine mounts without checking the quality certificate. Counterfeits often have incorrect rubber hardness, which can lead to accelerated wear of other transmission components.
Preparation for replacement and necessary tools
The process of replacing engine mounts Nissan Primera P12 requires certain training and the availability of special tools. You will need a jack, safety stops, a set of wrenches and sockets, and a silent block puller (if needed). It is better to carry out work on a pit or a lift in order to have free access to the lower part of the engine.
Before starting work, it is necessary to de-energize the vehicle by disconnecting the battery terminal. This will prevent accidental short circuits when working with wiring that often runs near the support mounts. It is also recommended to prepare a container for draining the oil if you need to remove the pan or other elements that interfere with access to the mounting bolts.
An important step is fixing the engine. Since the engine will lose support when the mounts are unscrewed, it will need to be supported. Use a hydraulic jack through the wood shim to avoid damaging the oil pan. Make sure the engine is stable and cannot move to the side when removing the old mounts.
- π οΈ Set of socket heads (from 10 to 24 mm)
- π οΈ Hydraulic jack and wooden beam
- π οΈ WD-40 or penetrating lubricant for rusty bolts
- π οΈ Torque wrench for tightening new bolts
βοΈ Preparing to replace pillows
Step-by-step replacement instructions
We start replacing with the most accessible support, usually the front or left. Remove the engine protection, if installed, and unscrew the bolts securing the support to the body and to the engine. Be careful, the bolts may be stuck, so treat them with penetrating lubricant beforehand. Use a lever if necessary, but be careful not to break the thread.
After removing the old mounts, carefully lower the engine on a jack to release the old mount and remove it. Install the new support, first checking the alignment of the holes. Do not tighten the bolts all the way right away, as the engine may move and the mounting geometry will be disrupted. Tightening is carried out only after the engine has been returned to its normal position.
For proper installation, the engine must hang naturally on its supports. Lower the jack slowly, controlling the process. Once the engine is in place, tighten all bolts to the torque specified in the technical manual. For Nissan Primera P12 the tightening torque is usually approx. 60-80 Nm for basic fasteners, but it is better to clarify this value for a specific model.
After replacing all the supports, be sure to check the engine operation. Start the engine and let it idle. The vibration should disappear. If it remains, you may have installed the engine incorrectly or one of the supports is defective. Also check that hoses and wires are not touching new elements.
What to do if the bolts do not come off?
If the bolts are very stuck, do not use excessive force to avoid breaking the head or bolt. Use heat on the bolt (if it is safe for the rubber and plastic nearby) and plenty of penetrating lubricant. As a last resort, you can use a grinder to cut off the head of the bolt, but this requires great care.
Common mistakes and expert advice
One of the most common mistakes when replacing cushions is unscrewing all the supports at the same time. This results in the engine hanging on a single jack, which may slip or fail to support the weight of the unit. Always change the cushions one at a time, securing the engine at each stage of work. This ensures safety and correct installation.
Another mistake is ignoring the condition of bolts and nuts. If the threads are damaged or the bolt shows signs of corrosion, it must be replaced. Using old fasteners can lead to their unscrewing during operation, which is dangerous. Also, do not skimp on washers and spacers, which are often included with new supports.
New pillows will work in tandem with old ones that have already lost their properties, which will lead to engine misalignment and rapid wear of new parts. The best option is to replace the entire set of supports at once.
β οΈ Attention: After replacing the airbags, be sure to check the position of the throttle valve and sensors. Sometimes engine misalignment can disrupt engine management system adjustments.
Make sure the engine is level before tightening the bolts. Use a long ruler or level to check that the power unit is level.
Diagnostics after repair and final conclusions
After all work is completed, a test drive should be carried out. Listen for unusual sounds when accelerating, braking and cornering. There should be no vibration on the steering wheel or gas pedal. If everything is in order, the repair can be considered successful. If problems persist, other engine or transmission mounting components may need to be checked.
Regularly diagnosing the condition of your engine mounts will help you avoid major costs in the future. It is recommended to check their condition at every scheduled maintenance. Timely replacement of worn bearings will extend the life of the engine and transmission, and also ensure a comfortable ride on your Nissan Primera P12.
Replacing engine mounts is a job that you can do yourself if you have the tools and basic skills. The main thing is to follow safety precautions and take your time. Quality parts and proper installation will ensure your car runs like a charm again. Remember that Properly installed engine mounts are the key to the durability of the entire Nissan Primera P12 transmission.
Replacing all engine mounts at the same time ensures even loading and prevents premature wear of new parts.
How often do you need to change engine mounts on a Nissan Primera P12?
The average service life of engine mounts is 80-100 thousand kilometers, but this depends on operating conditions. If you drive aggressively or frequently drive on bad roads, they may fail sooner.
Is it possible to drive with one broken airbag?
You can drive, but it is not recommended. This places additional stress on the remaining supports and can cause damage to attachments, hoses, and wiring.
What tools are needed for replacement?
You will need a jack, socket set, wrenches, penetrating lube and a torque wrench. It is also advisable to have a pit or lift to access the underside of the engine.
Is it worth installing original pillows?
Original pillows provide the best quality and durability, but are more expensive. High-quality analogues from well-known brands (Febi, Sasic) are also a good choice.
What to do if vibration remains after replacement?
Check the correct installation of the engine and the condition of other supports and attachments. Perhaps the problem is not in the airbags, but in the crankshaft imbalance or other components.