Do you know what spark plugs are for and why they are so important to engine performance? What is the correct way to replace the spark plugs on the Nissan Qashqai and why does their malfunction cause malfunctions of the entire engine system?
In order to answer these questions, it is necessary, first of all, to understand: what are spark plugs? Spark plugs are a device that ignites the working mixture and is the main element of the smooth operation of the engine. Failure of at least one spark plug causes the impossibility of further engine operation.
Domestic manufacturers guarantee the correct operation of the device for 10-15 thousand kilometers, however, this threshold is much higher on Nissan cars.
Despite the fact that, according to their functional purpose, spark plugs must withstand constant mechanical and thermal loads, their performance can stop at any time. And here it is important to provide the car with first aid.
Spark plug replacement procedure
- Before proceeding with the replacement procedure, you must purchase a torque wrench. This tool will help you to properly distribute the effort when tightening the spark plugs.
Spark plug wrench. If you want to save a little, you can purchase an extended head and grind it on the machine to a diameter of 19 mm.
- You should not rely on memory and try to remember the original front of the work. As a rule, only large nodes are remembered. To protect yourself from unnecessary worries about the correctness of the newly assembled structure, use a camera.
- There is a pipe between the throttle valve and the filter. In order to remove it, you will need to disconnect the ventilation hose from the block head and loosen the two clamps.
- Disconnect the vacuum hose with gentle movements. Do not damage the manifold as it is made of fragile plastic.
- Remove the connector from the canister purge valve.
- Unscrew the bracket bolt from the block head with a key "8".
- Remove the hoses from the mount and unscrew the bracket under the throttle.
- By removing the bracket, you will have access to the most difficult bolt. Unscrew it with the spanner wrench last.
- The manifold is attached to the block head with 5 bolts. Unscrew them in the reverse order shown in the figure.
- Correct replacement of spark plugs on the Nissan Qashqai requires your attention and utmost care, so take your time when proceeding to each next step.
- Raise the manifold and throttle body. Attention! Remove the dipstick before lifting.
- Secure it with wire so that it does not interfere when changing plugs.
- After gaining access to work with spark plugs, remove oil and dirt from the surface. Be careful not to drop objects or tools into the inlet holes of the block head.
- Insulate the holes with a thick cloth and only then proceed to remove the connectors from the coils of the candles.
- After unscrewing the coils, arrange them in order. In order to decide on the need for further replacement of the spark plugs, unscrew them with a torque wrench. Be careful, because it is allowed to turn out the spark plugs only after the engine has completely cooled down.
- Before the subsequent installation of new spark plugs, lubricate their threads with anti-seizing sealant.
- Having installed the candles by hand and making sure that they are level, tighten them with a 22-24Nm or 2.3-2.5 kg / m torque wrench. Gently lower and tighten the spark plug coils first, then the connectors on them. After lowering the manifold after that, do not fully tighten the far left upper bracket bolt.
- A difficult bolt, to make it easier to hit the thread, should be baited with pliers with thin bent "jaws" with a raised throttle. Do not fully tighten the bolt.
- Referring to the illustration showing the reverse tightening sequence, start installing the 5 front bolts. After the job is done, tighten the far left and hard bolts with a torque wrench 27 Nm or 2.8 kg / m.
- After completing all the work on changing the spark plugs, replace the connector from the purge valve, connect the vacuum hose, put on the nipple by connecting the hose of the ventilation system. Remember to replace the dipstick.
| State | Symptoms | Consequences | Recommendations |
| Coal deposits | The presence of soot due to re-enrichment of the fuel-air mixture | Ignition misfires, unstable engine operation | Replace standard plugs with plugs with the longest insulators. They will increase your resistance to dirt |
| The normal state of the candles | Slight wear of electrodes, gray-brown color of the candles | The installed plugs correspond to the type and general condition of the engine. | No replacement required |
| Oiling | Wear of valve stem seals | Difficulty starting, unstable motor operation | Mechanical restoration work required. Replacement of candles required |
| Ash formation | Brown deposits on the electrodes | Electrode insulation, misfiring | Replacing the valve stem seals, changing the fuel grade |
| Overheat | Electrode erosion, white porous insulator, no deposits | Reduced plug life | Check the condition of the radiator, intake valve vacuum |
| Wear | Slight build-up of deposits on the electrodes. Color is normal | Difficulty starting in cold weather. Increased fuel consumption | Replacing candles with new ones of the same type |
| Ignition too early | Fused electrodes, white insulator | Engine failure | Check the glow plugs, the quality of the mixture, the cooling system |
| Detonation | Insulators are visually damaged | Damage to pistons | Check the correct adjustment of the spark plug gap |
| Electrically conductive gloss | Isolator yellowish color | Misfire at high speeds, with sharp acceleration - a sudden rise in temperature in the combustion chambers | Immediate replacement of spark plugs required |
| Splashing | Loose deposits on the electrodes | Ignition misfires caused by deposits sticking to a hot insulator | It is necessary to replace the candles with new ones of the same type. |
| Closing the electrodes | The interelectrode space is filled with waste products of combustion | Ignition failure | Waste disposal required |
| Mechanical damage | Ingress of foreign materials into the combustion chamber | Damage to the piston, failure of the cylinder to function | Removal of foreign objects from the engine is required. Replacing damaged elements |
If you have doubts about the proper operation of the engine, feel free to proceed to diagnosing problems. Timely replacement of spark plugs on Nissan Qashqai will prevent the formation of undesirable consequences for the car and eliminate the formation of mechanical damage.
Despite the fact that by diagnosing the condition of the engine yourself, you save most of the money, there is a possibility of damage to car parts. Therefore, before proceeding with the repair of Nissan Qashqai, gain strength and patience!
Spark plugs (SZ) play one of the main roles in the ignition system. Their malfunction can cause malfunctions in the entire operation of the internal combustion engine. The article is devoted to SZ for Nissan cars: when a replacement is necessary, which candles to put, how to replace the Nissan Qashqai candles with your own hands.
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When do you need to replace the candles?
SZ serve to form a spark that ignites the combustible mixture.
The smooth operation of the engine depends on the quality of sparking. If at least one of the 4 fails, then further operation of the motor will be impossible.
SZ have their own resource. According to the regulations on Nissan cars, they are changed after 30 thousand kilometers. Although SZ must withstand significant thermal and mechanical loads, they are subject to wear and tear and can fail at the most inopportune moment. To avoid an unpleasant surprise on the road, a visual inspection of the SZ should be done at each inspection.
What kind of candles to put?
To avoid problems, it is better to purchase originals for replacement. For Nissan Qashqai, such SZ as NGK Plzkar6a with an iridium tip are suitable. The average service life of the SZ is different and largely depends on the material of manufacture of the electrodes.
Chromium-nickel alloy has increased thermal conductivity and high corrosion resistance. Silver has the best thermal conductivity. The advantage of platinum electrodes is their high resistance to corrosion and resistance to burning (video author - VybratAuto - Automotive information site).
Replacing SZ with Nissan is a laborious process, so it is better to buy high-quality products right away. True, they are expensive. If you want to save money, you can find cheap analogs, which are offered in a large number on the Internet. But such savings can result in frequent replacement of candles.
DIY replacement instructions
The procedure for replacing SZ with Nissan Qashqai, Nissan Note and Nissan Juke is similar, especially in that it is not easy to get to NW. Although this process is laborious, it is quite doable even for a novice car enthusiast.
Tools and materials
To work, you need to prepare the necessary tools and materials:
- a set of keys and screwdrivers;
- special candle wrench;
- torque wrench;
- new set of SZ;
- clean rags.
If necessary, it is worth changing the gasket of the throttle assembly and the intake manifold.
The process of dismantling and replacing SZ
If the car is after the trip, then you need to wait until it cools down. The work is performed on a cold engine.
Replacing candles Nissan Qashqai consists of a sequence of steps:
- First, the decorative protective cover is removed from the engine. Under it is the collector of interest to us.
- There is a pipe between the throttle valve and the filter. To remove it, you need to unscrew the two fasteners and loosen the clamps. Before removing the pipe, it is necessary to disconnect the hose of the ventilation system from the cylinder head.
- Disconnect the vacuum hose with gentle movements so as not to damage the plastic manifold.
- The next step is to remove the manifold. To do this, unscrew 7 bolts. 5 of them are on top, 6th from the left. To get to the 7th, you need to remove the connector from the absorber purge valve and dismantle the throttle valve by unscrewing 4 bolts around its perimeter.
- By pulling out the dipstick so that it does not interfere, you can raise the manifold. You do not need to remove it completely, you can simply tie it up with rope or wire.
- SZ are now available. Before replacing them, everything should be thoroughly cleaned of dirt and oil, while not dropping anything in the cylinder head.
- As a safety net, you can cover the cylinder head outlet so that nothing falls there.
- Now we change the SZ one by one. First, disconnect the connector from the ignition coil. Then the coil itself is removed.
- SZ is located under the coil, which is unscrewed using a special spark plug wrench for Nissan.
- Then we fix a new candle in the candle wrench and screw it in by hand. Having tightened it all the way, you should take a torque wrench and tighten it to a torque of no more than 18-19 Nm. Overtightening can cause cracks in the spark plug threads and become unusable.
- Similar actions are performed for all 4 SZ.
- After replacing all SZs, the assembly is carried out in the reverse order.
After complete assembly, you need to start the engine and check its operation with the replaced plugs.
One of the types of routine maintenance of the Nissan Qashqai crossover is replacing spark plugs on gasoline power plants. This procedure is necessary to ensure the normal functioning of the ignition system and engines in general.
Replacement frequency, signs of malfunction
According to the technical documentation for the Nissan Qashqai with an engine volume of 1.6 and 2.0 liters, the frequency of replacement of spark plugs is identical and is 30 thousand kilometers or 2 years of operation. However, practice shows that original products are capable of working 40, or even 60 thousand km without any interruptions.
But it is better not to experiment and observe the replacement procedure, which will guarantee the uninterrupted operation of the power plant and reduce the likelihood of a breakdown.
Even the most expensive and high-quality spark plugs can fail or start to work intermittently, and this is immediately displayed on the engine.
The main signs of poor spark plug condition are:
- Unstable motor operation;
- Difficult launch;
- Increased fuel consumption;
- Decrease in dynamic performance.
These signs indicate that the service life of the products is exhausted or a defect has appeared in some of them that affects its performance. Moreover, even if only one spark plug is faulty, you need to change everything at the same time.
But do not forget that the signs listed above can also indicate other malfunctions in the car.
We carry out diagnostics
Replacing the spark plugs allows you to ensure the normal functioning of the power plant, and their inspection provides information on the state of its main components.
Any irregularities in the operation of the unit are manifested in the form of various deposits on the electrodes - soot, deposits, as well as erosion. Details of which engine problems are indicated by the condition of the candles are indicated in the table:
Replacing spark plugs with Nissan Qashqai 1.6 and 2.0 is a really necessary operation, it not only ensures the normal operation of the engine, but also allows you to identify problems at an early stage and eliminate them, preventing serious breakdowns and subsequent expensive repairs.
We select replacement candles
On the 1.6 and 2.0 liter Nissan Qashqai engines, identical spark plugs are used - with a heat rating of 6, a threaded part with a length of 26.5 mm and a diameter of 12 mm.
There is also no difference in the products used on engines of different generations, for example, on the J10 2.0 liter engines (1st generation), the same spark plugs are used as on the J11 2.0 liters (2nd generation).
From the Nissan Qashqai plant, it is equipped with candles produced by NGK, which are positioned by the automaker as original ones and have the article 22401-SK81V. They are sold in Nissan packaging and cost approximately $ 10 each.
Also for this car model there are original products with an iridium electrode manufactured by Denso, their article number is 22401-JD01B.
The second option is more preferable for replacement, and this is indicated by the automaker itself, but for some reason he does not install them from the factory. will cost about $ 15.
One of the problems with original candles in branded packaging is their frequent counterfeiting, moreover, they are sold at a slightly overpriced.
NGK has a direct analogue to the original product, it is produced under the index NGK5118 (article PLZKAR6A-11). In fact, a candle with the article number 22401-CK81V in a branded package and NGK5118 are one and the same, but the latter will cost less - about $ 7.
The same situation is with the iridium counterparts for Nissan Qashqai, designated by the article number 22401-JD01B, they have an analogue - Denso FXE20HR11, but in this case the price for the parts is the same.
In addition to these products, you can pick up analogs from other manufacturers.
Suitable for Nissan Qashqai:
- Bosh with article 0242135524 (electrode material - platinum, cost - $ 7.5);
- Beru Z325 (with a platinum electrode, price - $ 6);
- Champion OE207 (electrode - platinum, cost - $ 8);
- Denso Iridium Tough VFXEH20 (electrodes - iridium-platinum, price - $ 15).
The indicated cost is the average, while the real price may differ and depends on the suppliers.
Tools and equipment for work
The design features of the Nissan Qashqai power plants make it difficult to perform the operation, but this does not mean that it is impossible to replace the candles on your own.
To get to the required elements, it is necessary to remove a number of parts, but this does not require any specific devices, but a torque wrench is required.
Otherwise, the tools and equipment are common:
- Keys for 8-10 (preferably heads with extensions and ratchet);
- Candle wrench for 14 (with magnet);
- Flat screwdriver;
- Clean rags.
In addition to new spark plugs, it is advisable to purchase gaskets for the intake manifold and throttle assembly to replace the gaskets.
Replacement technology
Since replacing the Nissan Qashqai 1.6 / 2.0 candles is a procedure that requires the removal of a number of elements, it will not be superfluous to have a camera to record each stage - this can greatly help during assembly.
Having prepared everything you need, you can start replacing.
IMPORTANT: The operation is performed only on a cold engine.
Consider the replacement technology using the example of Nissan Qashqai 1.6 1.6 L:
- Having unscrewed two fastening bolts, we remove the decorative cover of the motor, there is no difficulty here;
- We loosen the clamps and remove the air duct installed between the throttle assembly and the air filter. We also disconnect the crankcase ventilation pipe from the cylinder head cover to the air duct;
- We unscrew the fastening bolts of the throttle assembly, take it to the side (without disconnecting the connectors with wiring and pipelines of the cooling system from the assembly). Connectors from the throttle body do not need to be removed or disconnected from the cooling.
Pay attention - there is a bolt under the throttle assembly, it must be unscrewed; 
- We take out the oil dipstick (it is better to close the hole with something in order to avoid the ingress of third-party small elements into the motor);
- We unscrew the 7 bolts securing the intake manifold. Unscrew the 5 front ones starting from the central one and moving to the sides.
The 6th bolt is located on the left rear of the manifold and secures it through the bracket. The 7th bolt is located to the right, below the throttle assembly bore. 
Having unscrewed all the fasteners, carefully lift and move the collector to the side (so as not to disconnect the pipelines from it); 
- We wipe the mounting holes of the collector in the block head and carefully cover it with a rag;
- We wipe the cylinder head cover from dust;
- Disconnect the connectors with wiring from the ignition coils;
- Unscrew the coil fasteners and remove them;
- We tear off the candles, but we are not yet unscrewing them, since you need to blow the wells with compressed air, wipe them with a clean rag to remove the debris;
- We unscrew the candles one by one. If the latter is with a magnet installed, it will not be difficult to remove the elements, since they will become magnetized;
- With the same key we put new candles in place and screw them a little (you cannot just throw them into the well so as not to disturb the gap between the electrodes);
- They should be screwed in using a torque wrench. The tightening torque should be 19.6-20 Nm. You cannot tighten it any longer, otherwise you can destroy the partition between the wall of the candle well and the channel of the cooling system (in case of such a malfunction, the block head must be replaced);
- We put in place and connect the wiring to the ignition coils;
- Before installing the collector in place, replace the gasket. The collector fasteners are also tightened with a torque wrench (force - 27 Nm). The intake part is tightened first;
- The same procedure, including replacing the gasket, is performed when installing the throttle assembly, but here the bolts are tightened to 10 Nm.
- Do not forget to connect the vacuum booster hose and put the dipstick back.
All other parts are installed in place in the reverse order of removal.
Nissan Qashqai has been produced from 2006 to the present day. On the domestic market, the car is presented with gasoline engines 1.6 (HR16DE) and 2.0 liters (MR20DE), as well as one modification with a diesel volume of 1.5 liters.
Spark plugs for Nissan Qashqai 1.6 and 2.0
From the factory, the car is equipped with original spark plugs under the article 22401CK81B... Original candles in Nissan branded packaging are on sale. The part is manufactured by NGK. Price - 580 rubles. Direct analogue of a branded part from the manufacturer - PLZKAR6A-11(she NGK 5118). Price - 380 rubles. In fact, this is the same spare part. Spark plugs for Qashqai do not differ in any way depending on the engine size. Also, there is no division depending on the generations of the car. The Nissan Qashqai J10 (first generation) and J11 (second generation) spark plugs have the same serial number.
Characteristics of spark plugs Nissan Qashqai 1.6 and 2.0
As the experience of many Kashkai owners shows, spark plugs in the original packaging 22401CK81B fakes are often found. The main sign by which you can distinguish the original is that candles should be in the branded box. PLZKAR6A-11 (NGK 5118). Also, a real original candle has straight electrodes, a gap of 1.1 mm, a platinum patch soldered on the side electrode, just opposite the main electrode. The O-ring cannot be removed (most often it dangles on fakes). Experts recommend buying original spark plugs for Nissan Qashqai directly from the manufacturer - NGK 5118... Fakes are much more common in original Nissan packaging.
Also for Kashkai there are original iridium candles under the number 22401JD01B... Price - 830 rubles. They are not installed from the factory, but are recommended by the manufacturer as an original spare part. The manufacturer of this part is Denso. It, like NGK, is the official supplier of Nissan spare parts. Direct analogue of the original Nissan spark plug 22401JD01B from the manufacturer Denso - FXE20HR11... Price - 840 rubles. The electrode material is iridium. As in the first case, these spark plugs are also very often counterfeited. The signs by which you can distinguish a fake are the same as those of the first factory spark plug. In a box with a number 22401JD01B there should always be a Denso spark plug FXE20HR11... In all other cases, it is a fake.
Spark plugs 22401CK81B
Spark plugs 22401JD01B
According to the manufacturers of candles with an iridium electrode, its service life is longer, and the performance is much higher. In practice, drivers did not notice any significant differences between platinum and iridium spark plugs.
Analogues of the original Nissan Qashqai spark plugs
When visiting Qashqai, you should also pay attention to the most popular analogs, which are not inferior in quality to the original, but at a slightly lower price:
0242135524 ... Manufacturer - BOSCH. Price - 420 rubles. This model of the candle has a proprietary technology "Double platinum", in which platinum is also soldered into the side electrode. This improves the ignition quality. The item has positive feedback from buyers. Electrode material - platinum;
Z325... Manufacturer - Beru. Price - 350 rubles. The electrode material is platinum. Qualitative analogue. In its overwhelming majority, the reviews about this model are positive;
OE207... Manufacturer - CHAMPION. Price - 430 rubles. Also a quality analogue from an American manufacturer. According to customer reviews, the quality of this candle model is no worse than the original.
Spark plugs BOSCH 0242135524
Spark plugs Beru Z325
Spark plugs CHAMPION OE207
Also on the forums you can often find a recommendation to put Denso Iridium Tough candles VFXEH20... Price - 850 rubles. They combine two technologies - Iridium and Platinum. That is capable of providing a long period of operation up to 100,000 km. Also, these candles are special in that they have a reduced electrode gap of up to 0.4 mm, which increases the efficiency of the engine and leads to a decrease in fuel consumption.
When change
It is recommended to change spark plugs every 30 thousand km of run, or 2 years of operation. It is recommended to check them every 15,000 km. As the experience of Qashqai car owners shows, original candles with a platinum electrode can work up to 60,000 km. Signs of the need to replace plugs are standard - not smooth engine operation, increased fuel consumption, loss of dynamism.
Today a Nissan Qashqai (Nissan Qashqai) car with a 2-liter engine, produced in 2012, on which it is necessary to replace the spark plugs, came to us. We will show you a detailed photo and video instruction on how to do it yourself.
We open the hood, unscrew the engine cover, which is held by two bolts under the head by 10:
Now we need to remove the intake manifold, unscrew the 5 bolts of its fastening to the head:
We take out the dipstick, loosen the clamps on the air duct pipe. We remove it:
We take out the connector from the throttle valve. We have two hoses for the throttle, we remove the clamps from them and plug them with bolts so that the antifreeze does not run away. Bolts 10 are ideal for these purposes. After removing the throttle valve, I recommend cleaning it at the same time; this can be done with a carburetor cleaner. Disconnect all hoses and remove the intake manifold.
In our case, dust got into the intake windows from above, it is imperative to remove it and close the windows so that nothing falls into them during operation.
We remove the ignition coils by simply pressing on their clips. We unscrew the mounting bolts, head 10:
If possible, blow out the candle wells with compressed air so that debris does not get into the engine when unscrewing the candles. Using a 14 spark plug wrench or a similar magnetic head, unscrew the candles:
We will put original candles, their article number 22401-CK81B according to NGK PLZKAR6A-11. I recommend tightening new candles using a torque wrench; according to the manufacturer's technical regulations, it is necessary to tighten them with a force of 22 to 25 Nm. We carry out the assembly in the reverse order.
Video of replacing spark plugs in Nissan Qashqai 2.0:
Backup video how to replace spark plugs in Nissan Qashqai 2.0:
