Spark plugs are found in any gasoline engine, since they generate the necessary spark that ignites the mixture of air and gasoline, which then enters the cylinders through the valve and sets the car in motion.
Due to the harsh conditions to which they are exposed, high temperatures, pressure, vibration, products quickly wear out, especially contacts, which are key elements of the device. The more powerful and faster the spark generated, the more efficient the start, minimizing wear on other components of the electrical network and battery.
In our review, we will provide recommendations: what to look for so as not to make a mistake when choosing a product, which brand model is best to buy. We will get acquainted with popular manufacturers, descriptions of ignition systems for Lada Granta, Priora and Kalina, and guide you on the average price.
Bosch fr7dcx
Bosch is a brand that has always created innovative and time-tested products.
"Bosch FR7DCX" is an economical design trusted by car enthusiasts all over the world. The model features a nickel striker and yttrium alloy ground pin, which are known to provide longer life. It is necessary to mention the design of the electrode from the original thin wire, which guarantees optimal flammability, comfort and functionality. You will get high motor efficiency thanks to the nickel-plated housing with anti-scuff properties.
"Bosch FR7DCX" - quality guarantee. In addition, continuous 360 degree laser welding provides increased durability by fusing the platinum striker. Bosch promises quick and easy installation across its entire range of products.
Technical indicators:
| Options | Characteristics |
| Thread size | M14 |
| Standard thread length | 19 mm |
| Wrench head size | 16 mm |
| Thread pitch | 1.25mm |
| Sealing method | Flat gasket |
| Number of side contacts, pcs. | 1 |
| Gap | 1.1 mm |
| Peculiarities | Resistor |
| Engine type | Petrol |
| Tightening angle | 90 ° |
| Connection type SAE | Screw-on |
| Maximum recommended tightening torque | 28 Nm |
| car model | Toyota, Hyundai, Nissan, LADA (VAZ), Ford, Kia, Chrysler, Opel, Chery, Mitsubishi, Chevrolet, Mercury, Honda, Lexus, Great Wall, Daihatsu, Suzuki, Daewoo, Isuzu, Acura, Rover, Subaru, Mazda, Saab, Dodge, Buick, Proton, Foton, Lotus, HOLDEN, MARUTI, VAUXHALL, Perodua |
Bosch FR7DCX
Advantages:
- pre-adjusted gap;
- excellent flammability and performance;
- affordable price.
Flaws:
Brisk super lr15yc
When it comes to candles, buyers always choose . This particular model uses a central fine wire nickel alloy electrode with a copper tip to reduce voltage and provide fast, efficient starting. This design increases fuel economy and service life.
"Brisk Super LR15YC" is equipped with a reliable seal that prevents any type of gas leakage, which significantly increases the ignition efficiency at startup. Modern materials used during production ensure increased performance and engine power.
"Brisk Super LR15YC" is suitable for professional racing teams, car enthusiasts who love street STREET RACING, various types of consumers, the model has received wide recognition all over the world.
Compared to conventional products, it has a copper core to remove excess degrees, an aluminosilicate ceramic insulator for better heat transfer, a metal coating that protects the body from corrosion, and a trapezoidal contact that reduces contamination.
Technical indicators:
| Options | Characteristics |
| Thread size | M14 |
| Standard thread length | 19 mm |
| Wrench head size | 22 mm |
| Thread pitch | 1.25mm |
| Sealing method | Flat gasket |
| Heat number | 15 |
| Number of side electrodes, pcs. | 1 |
| Gap | 0.7 mm |
| Engine type | petrol |
| Tightening angle | 90 ° |
| Minimum recommended tightening torque | 20 Nm |
| Maximum recommended tightening torque | 30 Nm |
| car model | Hyundai, Nissan, LADA (VAZ), BMW, Ford, Kia, Chrysler, ZAZ, Renault, Opel, Alfa Romeo, Mitsubishi, SEAT, Chevrolet, Honda, Great Wall, Daihatsu, Aston Martin, Porsche, Suzuki, Daewoo, Isuzu, Land Rover, Rover, Volvo, Fiat, Subaru, Mazda, Lancia, Daimler, Alpina, HOLDEN, VAUXHALL, Bedford, FSO, Perodua, Zastava, Rayton-Fissore, Autobianchi |
Brisk Super LR15YC
Advantages:
- fuel economy;
- anti-corrosion, extreme pressure properties;
- helps increase car power;
- prevents gas leakage.
Flaws:
Bosch YR7MPP33 (0 242 135 509) with platinum electrode
Very expensive new generation spark plugs with platinum electrodes. The thread is M12, its length is 26.5 mm, pitch is 1.25 mm. A wrench of 16 is used for tightening. The heat rating is 7. The model is used for Mercedes-Benz cars, but they are installed on any gasoline cars, including VAZ.
Recommended for the engine of modern cars, the main thing is that it is used on the injector and not on the carburetor. The model is 8-valve; it is not worth using it for a 16-valve engine, although it is possible. Very high quality, German candles. The product weighs 47 g. It costs 480–500 rubles per piece.
Central electrode with platinum tip. Lateral - one, with a cross-section of 0.6 mm, the distance between them is 0.8 mm, the gap is 3.5 mm. Provide more complete combustion of fuel due to enhanced spark formation.
These are products that really save fuel, which becomes important on powerful cars. They also help reduce the production of harmful substances in the exhaust. Thanks to self-cleaning, the kit can be driven several times further than conventional models.
Pros:
- increased sparking;
- increased mileage;
- are not afraid of low-quality gasoline;
- more complete combustion of fuel assemblies;
- help save fuel.
Champion rn9yc
"Champion" guarantees the production of products that meet customer requirements and differ from others for the better. The Champion RN9YC provides excellent performance thanks to its fine nickel wire center contact. Reliable grounding helps extend the life of the structure, making it a universal choice for everyone.
Champion RN9YC's exclusive high-temperature alloy allows the electrodes to operate efficiently once the optimum temperature is reached and then remain stable regardless of engine load. This design is recommended for use in racing cars, passenger cars and small trucks.
"Champion RN9YC" provides excellent engine performance and works with almost all types. This feature distinguishes the model from other designs, since they are not compatible with all motors. The devices are not so easy to install, although with a little skill you can do it without much effort.
Technical indicators:
Champion RN9YC
Advantages:
- the engine does not shake when cold;
- it is possible to drive in first gear with the gas almost released;
- compatibility with all types of motors;
- increased productivity;
- exclusive heat-resistant alloy body;
- quick throttle response;
- Maintains stable operating temperature.
Flaws:
- complex installation;
- The side electrode is not located above the central one.
Denso q20pr-u11
The Denso Q20PR-U11 is one of the best nickel designs on our list and is manufactured using U-groove technology to promote complete combustion. Denso Q20PR-U11 is a good product when it comes to saving gas and speeding up the car.
The insulator made of purified aluminum oxide powder provides excellent dielectric strength, thermal conductivity, the plug can easily withstand extreme loads. Additionally, the design features a nickel center pin and a reinforced titanium ground pin for exceptional performance.
The reinforced alloy of the central electrode increases the service life of the model. Moreover, Denso Q20PR-U11 starts the engine faster than any other spark plug. The design has the necessary strength for long-term use, has a full range of advantages at a very affordable cost.
Technical indicators:
Denso Q20PR-U11
Advantages:
- provides quick start, excellent engine acceleration;
- withstands extreme loads;
- affordable price;
- exceptional thermal conductivity.
Flaws:
- not compatible with some engines.
Denso w20epr-u
The following design is made of nickel using U-groove technology. The model improves engine performance, has a long service life, and reduces fuel consumption.
"Denso W20EPR-U" is a premium product equipped with nickel tips that prevent gap erosion and misfire. The manufacturer promises a quick start and smooth acceleration, which you will undoubtedly like.
The central contact with a bend operates quickly and cleanly. The ignition tip ensures the durability and superior performance of the Denso W20EPR-U. The nickel alloy side electrode guarantees precise gaps, sharper ignition and ignition, and the copper core provides good performance under all conditions.
Since Denso W20EPR-U are manufactured using advanced technology, they are ideal for Lada engines.
Technical indicators:
https://www.youtube.com/watch?v=dTXgPIOcBVM
Denso W20EPR-U
Advantages:
- easy starting, fast engine acceleration;
- optimized vehicle operation;
- durable, modern design.
Flaws:
- inaccurate factory clearance adjustment.
Ngk 5282 bcpr6e-11
The "NGK 5282 BCPR6E-11" is manufactured to the best of the industry's leading-edge specifications, providing stunning flammability, superior fouling protection and improved throttle response.
To ensure high performance, the model is equipped with a thin laser-welded nickel tip. It guarantees durability and a stable spark, ensuring maximum efficiency of the car engine.
The long insulator prevents clogging, and the conical shape of the ground electrode reduces the damping effect. No need to worry about combustion products leaking while driving, the effective flat gasket sealing method eliminates gas leakage, and the corrugated fins prevent clogging.
"NGK 5282 BCPR6E-11" effectively resists thermal wear, the body design has an extremely high melting point, which makes it one of the most popular types among vehicle owners. By purchasing “NGK 5282 BCPR6E-11” you become one of the owners of efficient engines.
In addition, the product has anti-scuff and anti-corrosion properties, which makes it last longer. Although the factory clearance dimensions may not be correct, they can be easily adjusted using the appropriate tool.
Technical indicators:
NGK 5282 BCPR6E-11
Advantages:
- durable body;
- excellent protection against contamination;
- anti-scuff properties;
- excellent flammability;
- prevents leakage of combustion products.
Flaws:
Ngk 7822 bpr6es
brings to your attention this amazing nickel alloy model that provides excellent overall performance. It guarantees better fuel efficiency, quick starting and low emissions.
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Regarding the durability factor, it is important to mention that the “NGK 7822 BPR6ES” is equipped with a thin nickel tip with a diameter of 0.9 mm, fixed using laser welding. It keeps the voltage low, so the design will last a long time. This is one of the best modifications due to its performance and stable spark.
It is necessary to mention the improved response of the NGK 7822 BPR6ES to the throttle valve due to the special configuration of the corrugated ribs of the insulator cap, which prevent contamination of the spark plug.
Providing the engine with an excellent spark is achieved due to the presence of a ground and central electrode made of nickel alloy. In addition, the metal housing coating is an excellent addition to the anti-corrosion and anti-scuff properties.
If you are worried about fuel leakage then don't do it, the product comes with an excellent seal that eliminates this problem and ensures long service life. “NGK 7822 BPR6ES” is a worthy option, economical in price, it will certainly come in handy for the car.
Technical indicators:
NGK 7822 BPR6ES
Advantages:
- low price;
- prevents fuel leakage;
- efficiency;
- excellent anti-corrosion and extreme pressure properties.
Flaws:
- The central electrode is too fragile.
Analogs
Which spark plugs are better for Priora 16 cl.? For those who do not want to buy factory spark plugs, there is a huge selection of analogues:
- Products from the British. Which spark plugs are best to choose for a Lada Priora car? How to properly replace spark plugs with your own hands? Which spark plugs are better for Priora 16 cl.? For such an engine it is worth purchasing the “Champion” RC9YC.
- Candles from German. They are little popular, but have a high resource. The marking for Priora is 14FR7DU.
- Japanese candles NGK. Zheka147 › Blog › Which spark plugs are best to choose for which spark plugs to put on Priora a for 8. Perhaps the most popular analogue of factory products. NGK marked BCPR6ES is ideal for the 16-valve Priora.
- "Denso". This is also a Japanese manufacturer. The cost is on par with NGK, and the quality is not inferior either. For Priora you should buy Denso Q20PR-U11.
- "Brisk" (Czech Republic). Another popular spark plug manufacturer. The manufacturer offers products with different heat ratings and number of electrodes. Spark plugs DR15YC-1 are suitable for Priora. The same ones are used on Kalina engines of the first and second generation, with a 16-valve timing mechanism. But judging by the reviews, the products are of low quality - the electrodes are greatly offset from the center, which is unacceptable for such products.
If carbon deposits appear
After 15 thousand kilometers, it is recommended to re-inspect the condition of the spark plugs. Sometimes brownish-yellow carbon deposits can be observed on the surface of the electrodes. This indicates the use of fuel with an octane rating that is not suitable for the vehicle. When the spark plug overheats, the carbon deposits will turn white. Erosion is also possible. The reason may be early ignition timing. Sometimes the candle is simply not screwed on tightly. Also, with early ignition, the electrode itself melts. This spark plug is for replacement only. Which spark plugs are better for Priora 16 cl., see above.
If the car is moving, you should check the part with a tester for functionality. Typically, a gun with a metal tip and cap is used for this. The tip is touched to the thread of the spark plug, and the cap is placed on the terminal for the armor wires. When you pull the trigger, a spark should occur between the electrodes. If it is not there, the element needs to be replaced.
Types of candles, their structure
Not enough horsepower during acceleration, slow start, fuel consumption is growing at a gigantic rate, is the car shaking? You need to take a closer look at the heating system. These failures can occur for other reasons, but they are the clearest sign that the ignition is not working properly.
- top terminal: ignition coil connection point;
- main body: high voltage generation and heat insulator;
- thread: screwing a product into the cylinder head;
- electrode: spark source, the most important element, the quality of the system depends on its reliability.
It is important to know the difference between the two existing types of glow systems - spark plugs and glow plugs. The former are used by vehicles with a gasoline engine, and the latter by vehicles with a diesel engine. A standard feature of both options is engine starting assistance. We list several main characteristics of the system:
- center contact material;
- spark gap size;
- heat number (the higher it is, the less the product heats up);
- overall and connecting dimensions (length and thread pitch);
- number of side electrodes;
- resource of use;
- self-cleaning ability.
There is a variety that has become very popular - iridium spark plugs. Theoretically, their design has a thinner central wire diameter than others, it conducts current better and generates a more powerful spark, which greatly simplifies engine operation.
- Heaters perform the same function in diesel engines as the ignition system in gasoline engines. They are called "preheat plugs". They are responsible for facilitating cold starts, which is especially important for diesel engines, which are increasingly found on our roads. The heater is a resistor designed to increase the temperature inside the combustion chamber. Its shape resembles a ballpoint pen, one end of which is heated before starting. It is important to remember that it is advisable to replace all elements at the same time so that the work is rhythmic.
- Plugs are elements that ignite a mixture of gasoline and air inside the combustion chamber. A spark is generated due to a difference in electrical potential. If the motor is operating normally, this process is repeated an average of 2000 times per minute.
If you replace the ignition system in time, you can avoid premature wear of other parts of the vehicle. If you notice any of the following signs, it's time to consider purchasing new devices:
- loss of power while driving;
- increased fuel consumption, because gasoline combustion occurs incorrectly due to a spark generated at the wrong time;
- difficulty starting, especially in cold weather, knocking when the engine is running;
- dark smoke on the exhaust.
Let's look at the process of attaching a new heating system, provide step-by-step instructions and tips for installing the product yourself at home.
Description of types and markings
Replacing spark plugs for VAZ 2114 8 valves. how often do you need to change spark plugs on a vaz
When the need for replacement arises, you should decide which candles are best to install. The most popular brands are Brisk, NGK and Bosh. However, they have different markings adopted in Europe, so you need to know which imported candles correspond to the domestic markings. The interpretation of this marking, according to OST 37.003 081 - 98, is as follows:
- The first letter A means the type, diameter and thread pitch - M 14 x 1.25.
- If the letter U follows, it indicates the size of the hexagon for tightening the spark plug, 16 mm. In the absence of the second letter, the product has a size of 20.8 mm.
- The number 17 shows the heat number. When the engine is running, the spark plug heats up to a certain optimal temperature, at which it self-cleanses. In the event of unfavorable operating conditions, overheating of the electrodes occurs, and the fuel in the cylinder can ignite spontaneously, without waiting for a spark to occur. This effect is called glow ignition, and the glow number of a candle is a parameter indicating the temperature regime of its proper operation. The higher this parameter, the less the product heats up (cold candle) and can work in much more difficult conditions than a candle with a low heat rating (hot). In engines with high power and high speeds, colder spark plugs are used, and for power units with lower loads, hot products are used.
Marking of imported spark plugs on Lada Priora
- The letter D indicates the length of the thread (skirt) - 19 mm.
- The letter B means that part of the insulator protrudes above the plane of the product body.
- The letter P indicates that a resistor is built into the spark plug body to suppress interference from sparking.
- The last letter M indicates that the central electrode is bimetallic with a copper core.
The question of how to choose imported spark plugs by size for a Priora is not difficult to solve. To do this, just unscrew the old spark plug and have it with you during purchase. How imported products are labeled is shown in Table 1.
As can be seen from the table, the markings of domestic and imported candles are different. In addition, there are other markings. To simplify the selection process, Table 2 shows the corresponding spark plugs from various manufacturers for installation on Priora.
Note: in Table 2, the markings in the numerator are for the 16-valve Priora engine, and in the denominator for the 8-valve engine.
It is better to purchase spark plugs from official dealers, whose representatives will be able to explain all the nuances on the spot and advise on the appropriate option, since there are high-tech products at a higher price. For example, platinum or iridium spark plugs, the central electrode of which is made of these metals.
Its diameter is only 0.4-0.7 mm, despite the fact that a standard copper electrode has a size of 2.5 mm. Such products last twice as long as regular ones, so their high cost is fully justified. Spark plugs with two, three and four side electrodes are also suitable for installation on Priora. It is believed that they create better conditions for fuel combustion and extend the life of the vehicle's power plant.
Choosing the best copy
Let's figure out which spark plugs to put on the Priora 16 valves. Many drivers agree that these ignition elements are consumables, for which there is no point in overpaying, since they will still wear out after 20-30 thousand kilometers. If you have a similar opinion, the domestically produced AU17DVRM is your choice. They are not expensive and work, in principle, quite well.
When choosing among products from foreign manufacturers, we recommend giving preference to the following companies:
- Beru (standard 14FR-7DU);
- NGK (BCPR6ES);
- Denso (Q20PR-U11);
- Bosch (FR7DCU);
- BRISK (DR15YC).
The best spark plugs for a 16 valve engine, according to Prior owners, are made by the Japanese company Denso. Their iridium spark plugs on the Priora - Denso Iridium Power - have proven themselves well, and can travel for about 50-60 thousand km without any problems.
In general, the presence of an iridium electrode significantly increases the durability of the structure; moreover, iridium models retain their original characteristics throughout their entire service life.
For clarity, we present a graph of the increase in fuel consumption as different electrodes wear out.
Graph of increase in fuel consumption as different spark plug electrodes wear (iridium and conventional)
We’ve figured out which spark plugs are best for 16-valve Priora engines – let’s move on to 8-valve engines. The situation is similar for manufacturers: the best budget option is A17DVRM from our ZAZS plant.
Let us draw your attention to the fact that domestic A17DVRMs are an order of magnitude more durable and reliable than nameless Chinese ones at the same cost, so there is no need to be led by beautiful names and bright packaging.
Versions of high-quality foreign models tested by Prior owners - NGK BPR6ES and DENSO W20EPR - they are not cheap, but they are worth their price in full.
The Bosch FR7DPX Platinum also performed well. Reviews from prior drivers indicate that with them the car drives differently - the vibration in the engine disappears and the speed picks up better, and there are no problems with ignition even in severe frost.
The most famous manufacturers and popular markings
Modern retail outlets that sell replacement spare parts, consumables and components for cars are replete with a huge selection of different spark plugs. As they say, for every taste and color. However, there is no need to rush. First, you need to clarify which manufacturers produce spark plugs for the Priora with a 16-valve engine. The most common brands for Priora 16 valves are made by the following manufacturers.
- Russia, JSC ZAZS, AU 17 DVRM
- Germany, Bosch, WR7DC
- Germany, Beru, 14R-7DU
- Czech Republic, Brisk, LR15YC DR15YC
- Japan NGK, BPR6ES
- Japan Denso, W20EPR.
Of course, according to established tradition, car owners try to replace Russian ones with imported parts. And especially Japanese and German ones. It must be clarified that now this desire practically does not justify itself in any way. Yes, German Bosch spark plugs, in recent tests in laboratories, showed slightly better results than Russian DVRM. However, domestic devices are confidently ahead of all other models. Including German "Beri" and Japanese "NZHK".
What to choose for replacement
In general, you should not chase well-advertised brands. It must be taken into account that the market is now filled with a huge number of fakes. And, as a rule, it is precisely those parts that are popular for replacement and that have the highest cost that are falsified. Therefore, Russian devices for Priora in this context are not of great interest to counterfeiters. Next to them, the Czech Brisk stands with confidence. They are very popular among our repairmen. Japanese "NZHK" and German "Bosch" are doing well. But here, fakes are very common. Suffice it to say that they cost about $2 per candle when purchased from the factory. And they have 7 degrees of protection. Imagine how much a set of real candles will cost here in Russia.
In general, the advice is this: don’t get too carried away with imported parts. Practice shows that Russian-made spark plugs for Priora perform excellent when replaced.
Fault diagnosis
The best way to determine performance is to test the spark plug under pressure. The essence of this diagnostic method is to check sparking on the electrodes under conditions close to operating conditions. To do this, a candle is screwed into a special chamber equipped with an inspection window, and a discharge is passed through it, while air is pumped into the chamber with a compressor or manually.
At a certain moment, the discharge on the electrodes will begin to fade, and then completely disappear. Record the pressure gauge readings at this moment and compare them with the pressure in the cylinder, which was previously measured with a compression gauge. Plus 2 atm should be added to the compression meter readings. since the starter speed is much less than the engine operating speed.
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The consequences of driving a Lada Priora for a long time with faulty spark plugs can be disastrous, because, in addition to loss of power, some of the unburned fuel dilutes the engine oil, which harms engine parts. Then, in the form of vapors through the crankcase ventilation system, it again enters the cylinders, supersaturates the combustible mixture, which again does not completely burn on faulty spark plugs and ends up in the oil.
Therefore, if unstable operation, jerking, or failure occurs, you should immediately unscrew and inspect the spark plugs. Thick black deposits on the electrodes plus black exhaust from the pipe when the engine is running indicate an over-enrichment of the combustible mixture or an unsatisfactory condition of the spark plug itself.
If the coating on the electrodes is white and fluffy, and bluish smoke comes out of the exhaust pipe, then this is a problem with engine oil getting into the cylinders, so the oil caps or piston rings should be changed. All these additional loads on the spark plugs have a negative impact on them, and in any case they need to be checked for functionality and, if necessary, replaced ahead of schedule.
Conclusion
To ensure that the car never fails, it is necessary to regularly inspect the engine compartment of the car, change spark plugs and filters in a timely manner. Candles must be selected exactly according to the manufacturer’s recommendations. Never throw away old spark plugs, but store them in the luggage compartment of your car; you can use old spark plugs to get to the nearest service station at any time.
Sources
- https://enginehack.ru/svechi-zazhiganiya-priora/
- https://FB.ru/article/341997/kakie-svechi-luchshe-na-prioru-kl-obzor-vidyi-i-rekomendatsii
- https://priorik.ru/lajfhak-svechi-na-prioru-diagnostika-neispravnostej-zamena-tsena/
- https://prometey96.ru/lada-remont/svechi-na-prioru.html
- https://1ladapriora.ru/remont/svechi-luchshe-postavit.html
Instructions for replacing spark plugs on a 16 cl engine
So, if we are replacing spark plugs on a 21126 engine, then before removing the plastic decorative cover, it is necessary to remove the absorber purge valve from it. The photo shows that the valve simply lifts up and moves out of the way.
Remove the absorber purge valve
Next, remove the plastic decorative cover and see in front of you 4 ignition coils, which are mounted on spark plugs. To get to the spark plugs you will need to unscrew all the coils.
Removing the decorative cover
We disconnect the plugs from the coils, and using the E8 sprocket, unscrew each of them. We take them out of the block and you can start replacing the spark plugs. For a 16 cl engine, the spark plugs come with a “16” thread, so we take a 16 wrench and carefully unscrew each spark plug. If the replacement is made for the first time, the spark plugs may “go tight”.
Disconnect the pads from the ignition coils
We take out the spark plugs and install new ones. They should be tightened first by hand, so as not to damage the thread, and only then with a wrench.
We take out the old ones and install new spark plugs
The tightening torque for the spark plugs on the Priora is 25–30 Nm. There is no need to pull the thread too hard
After replacing and tightening all the spark plugs, install the ignition coils and reassemble in the reverse order. Look at the old candles, we have already written above about their soot and what it can mean.
Let's get started
So, first, open the hood and remove the decorative engine cover.
It is installed on clips. Next, remove the terminals from the ignition coils. The latter also needs to be removed (using the key at “10”).
Note! When removing the high-voltage cord, do not hold the cord - it may be damaged. You only need to grab the rubber tip. If the element is damaged, misfire may occur. The engine will start to stall, and the car itself will begin to consume a lot of fuel (since it needs more energy to push the idle piston in the cylinder).
Now let's move on to the candles themselves. We lower a specialized key into the shaft and begin to unscrew the spark plug counterclockwise using the handle.
You need to remove it very carefully - you must not allow it to fall into the well. Otherwise, part of the insulator may break off and fragments will fall into the cylinder.
Helpful advice: if you don’t have a key with a magnet, you can use the ignition module itself - install it on the end of the spark plug and pull it back out. This way we can remove the old element carefully and without damage.
Instructions for replacing spark plugs on an 8 valve engine
Unlike 16th grade. engine, there is one module (ignition coil) on the 8-valve engine, and not on each spark plug, so the process of replacing them is less labor-intensive.
Remove the plastic decorative engine cover, if present.
We remove the PVN (high-voltage wire) tips from the spark plugs. To avoid confusion, you can replace the spark plugs one by one.
Remove the tips from the spark plugs
To prevent dust and dirt from getting into the candle well, we clean the area next to it.
Using a 21 mm spark plug wrench, unscrew the spark plug, take a new one, screw it in and tighten it. Before installation, you can check the spark plug gap. For injection cars, it should be 1.0-1.1 mm.
The tightening torque of the spark plugs is 30-40 N*m.
After replacing all the spark plugs, check whether you have connected the PVP correctly; if so, you can start the engine and test the operation.
Video on how to replace spark plugs
Installing new ones
How do you then replace the spark plugs? Before installing new ones, you should check the gap between the side and central electrodes. It should be about one millimeter. The parameter is checked using a round probe. It is shown in the photo below:
Please note: over time, the spark plug gap increases. Once every 15 thousand kilometers it is recommended to check this parameter and, if necessary, adjust it.
If the gap is OK, put the spark plug on the tip of the ignition module and lower it into the shaft. Next, use a wrench to tighten it until it stops. There is no need to pull hard. The recommended tightening torque is 25 to 30 Nm. At the next stage, screw the coils and insert the terminals.
Next, we put the decorative plastic cover on the engine and try to start the engine.
How to replace spark plugs
Before installing a new product and removing failed spare parts, you must disconnect the negative pole of the battery, which, unlike the positive one, is black and has a “-” symbol. The cost of replacing the device is very low, starting from 150 rubles each. The cost will increase or decrease depending on the volume and number of cylinders.
On average, gasoline vehicles are serviced every 60,000 km. However, depending on how intensively the car is used, this interval may be shorter and the glow system will fail between 35,000 and 40,000 km.
Remember that if only one spark plug is faulty, it is advisable to replace them all at once. Below we provide step-by-step instructions necessary for installing the equipment:
- a wrench of a certain width so that you can unscrew and secure the new device;
- ratchet or hexagonal head to facilitate removal of the product;
- a compressor with compressed air to thoroughly clean all openings and connections;
- goggles to protect your eyes from debris that may bounce off during blowing;
- You need to put gloves on your hands, they will come in handy when working with cables.
1. First of all, keep in mind that the engine must be cold, you need to start working after 2 hours from the moment of using the equipment. The spark plugs are usually visible or under a plastic protector. They have a characteristic shape that will be very easy to find.
2. Disconnect the high-voltage cable from the required plug, carefully pulling it towards the top so as not to damage it. Do this carefully, remembering the location of all the wires so that you can then secure everything in its place.
3. Remove the fork and spool using a hex wrench, appropriate ratchet, or wrench. To remove the device, you need to turn the tool counterclockwise.
4. Then blow out the mounting hole, completely clearing it of dirt. It is important to wear safety glasses when doing this.
5. Secure the new product. Lubricate it and start screwing it in carefully by hand, applying a little force, then use a wrench to tighten the device, being careful not to overdo it too much.
6. Insert the ignition coil, tightening it with the screws and ratchet you used earlier. Be careful not to apply too much pressure as this may damage the threads and the reel itself.
7. Connect the cable and repeat the same process for each design.
If you did everything correctly, used the appropriate key size, unscrewing the heads, the car will start and work more efficiently.
How to choose the right spark plug
It is important to purchase high-quality spare parts for a car; in order to buy a good product, you need to pay attention to the following selection criteria:
1. It is necessary to order a product compatible with the machine's engine. Most of the best brands clearly indicate the vehicle models their product will be compatible with. Therefore, you need to carefully review the manufacturer's compliance list.
2. Apart from compatibility, you need to choose the design type as there are various options available. The most common:
- Copper-Nickel: The name may confuse you because these products are primarily made of nickel, with only the inner core being made of copper. It conducts current well, which is why most electrodes are made from it. The product is inexpensive, its disadvantage is that it has a short service life, even if used in a high-energy ignition system without a distributor. Many vehicles will benefit from this option; it is suitable for natural gas engines.
- The next type has a platinum center contact. It is expensive due to the rarity of this element, which is harder than nickel, so you can be sure that the product will not corrode. The platinum will prevent the tip gap from widening and wearing out, which directly affects the efficiency of the engine. There are models with one or more electrodes. This helps generate the spark in the best possible way. In terms of service life, it is twice that of standard nickel/copper construction.
- Iridium Product: If you want flawless, smooth motor performance, there is nothing better than an Iridium product. It has a longer service life than traditional models. The thin wire central contacts are designed to conduct current most efficiently. These are expensive products, but the price is offset by incredible performance.
- Silver candles are an option with the best thermal conductivity. The problem with this product is its durability. The precious metal cannot match the durability of platinum or iridium models.
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All designs fit any vehicle in one way or another, but the platinum-based option is more universal. It is relatively affordable than iridium and much better in performance and durability than copper-nickel devices.
3. It is important to decide: “What kind of ignition is needed, cold or hot?” To give a very simple but precise definition, we can say that candles that glow during operation are hot. And those that do not reach high temperatures are cold.
The metal shell of the structure operates at the same heat as the head. The elements are screwed together to form a chamber in which heat is distributed evenly. Hot models have a long insulator tip with a large surface area, causing all parts to become hot. At the same time, cold ones have a small cap that helps quickly remove excess degrees from the combustion zone.
Russian-made models usually have a numerical heat rating. Their assessment is not always consistent because some brands give higher values while others underestimate.
It becomes extremely difficult for buyers to choose the right product with so many options. It is best to order the design in accordance with the car's engine and year of manufacture.
4. If you do not want to suffer for a long time during replacement, it is better to choose a design that is easy to install. Using the above selection criteria, you can easily determine a productive model.
Below is a table of compatibility of spark plugs for a Lada car:
What else to look for when buying candles
Perhaps this advice will be unnecessary for many, but there have been cases when motorists got into trouble. So, when purchasing, you need to pay attention to the date of manufacture. According to the manufacturer's claims, it is only three years, even if it did not work. Preserved candles, that is, with a special preservative lubricant applied - 5 years. If you do not pay attention to the date of manufacture, then it is quite possible to purchase a low-quality, stale product. And then you shouldn’t be surprised that the same “same” spark plugs for Priora will last a minimum period.
The first thing to remember is that it is advisable to change the spark plugs as a whole set. But do not throw away the functional ones from the old kit. As a result of several replacements, you can collect a working set of used spark plugs, which you can carry with you in case of sudden failure.
Which spark plugs for Lada cars are best to choose?
08 October 2022 Lada.Online 368 323
A malfunction of the spark plugs immediately affects the operation of the engine; it begins to stall, jerk, does not pull, or starts poorly. To solve the problem, simply replace them with new ones, but which spark plugs are better to choose?
All modern 8 and 16 valve power units have the same manufacturer's recommendation. In other words, advice on choosing spark plugs will be similar for all modern Lada cars.
In the user manual for Lada Priora, Kalina, Granta, Vesta Largus, Niva and XRAY cars, the engine technical specifications contain the following data:
| Engine | VAZ 11183, VAZ 11186/11189 | VAZ 21126, VAZ 21127 | VAZ-21214 | VAZ-21129, 21179 | HR16/H4M | K4M/K7M |
| Automobile model | Granta, Kalina, Largus, Vesta | Granta, Kalina, Priora | Lada 4x4, Niva Chevrolet | Vesta, XRAY | Vesta, XRAY | Lada Largus |
| JSC "Robert Bosch Saratov" or EZ, Russia | A17DVRM/ A15DVRM | AU17DVRM/AU15DVRM | AU17DVRM | AU17DVRM | ||
| BERU, Germany | 14R-7DU | 14FR-7DU | 14FR-7DUX | |||
| CHAMPION, England | RN9YC | RC9YC | RN9YC4 | RYCLC87 | ||
| NGK, Japan | BPR6ES | BCPR6ES | BPR6E | LZKAR7D-9 | ||
| DENSO, Japan | W20EPR | Q20PR-U11 | ||||
| BRISK, Czech Republic | LR15YC-1/ LR17YC-1 | DR15YC-1/DR17YC-1 | DR15YC-1 | |||
| BOSCH, Germany | WR7DCX | FR7DCU | WR7DC | FR7DCU | ||
| SAGEM | RFN58LZ | |||||
| FINWHALE | F510 | |||||
| Renault | 224011561R 224019372R | 7700500168 |
The gap between the spark plug electrodes should be within 1...1.15 mm. Let us remind you that Lada Vesta and Lada XRAY can be equipped with a Nissan-Renault HR16/H4M engine. The spark plug gap in this case should be 0.85...0.95 mm. For K4M/K7M engines (more about spark plugs), the gap between the spark plug electrodes is 0.95 -0.05.
According to the requirements, the manufacturer must guarantee uninterrupted operation of the spark plugs for 18 months, provided that the vehicle mileage does not exceed 20,000 km. However, with good technical condition of the engine and proper operation, the service life of the spark plugs can be significantly longer. Thus, spark plugs are often replaced every 3 years or after 40 thousand km.
Marketers suggest improving engine performance by installing, for example, iridium, platinum or multi-electrode spark plugs on the Priora, the price of which is higher than usual. AVTOVAZ recommends using conventional, single-electrode spark plugs for its engines. In a review by ZaRulem magazine, a survey was conducted that shows that the majority of drivers follow the factory’s recommendations and choose simple, inexpensive spark plugs.
As part of the same review, nine different spark plugs were tested. As a result, they all passed the tests, and the winner was determined by summing up the points:
So what spark plugs should I put on the Priora/Granta/Kalina/Vesta? Based on the recommendations of AVTOVAZ, the test results of a popular car magazine and a survey of the social network VKontakte, we can conclude that the best choice would be spark plugs from manufacturers: NGK, Bosch, Denso, Brisk and EZ Standard.
Where can I buy? Original LADA spark plugs can be purchased in our online store:
What kind of spark plugs do you use? What is the main factor when choosing them? Let us remind you that a high-quality battery also affects engine starting.
Keywords: ignition system Lada Priora | ignition system for Lada Kalina | ignition system for Lada Granta | Lada Priora engine | Lada Kalina engine | Lada Granta engine | ignition system for Lada Vesta | Lada Vesta engine | ignition system Lada Largus | 4x4 ignition system | ignition system lada xray | Lada Largus engine | 4x4 engine | lada xray engine | Niva ignition system | Niva engine | universal article
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Varieties of candles
Spark plugs are divided into multi-electrode and two-electrode. For multi-electrode spark plugs, one is located in the middle and the rest are located at the edges. It is believed that such spark plugs last longer than two-electrode spark plugs. They have only two electrodes - one in the center, the other on the side. Spark plugs are also divided into regular, iridium or platinum.
Iridium spark plugs for Priora
Another characteristic of candles is their potassium number. The heat number is the average pressure at which it is easier to heat candles during testing. So, they are distinguished by types: cold (heat number above 20), medium (17-20), universal type (11-20), hot (11-14).
Classification
You need to approach your choice as responsibly as possible. It is worth deciding which type of spark plug is best suited for the car.
So, these elements have their own classification according to:
- Number of electrodes: two- and multi-electrode. The first type consists of several elements. These are the side and central electrodes. These are installed standard on Priora. As for the second type, they have one central and three side electrodes. As reviews note, these candles have a longer service life and are more reliable.
- Type of material. Often spark plugs are equipped with copper electrodes. What are the best spark plugs for Priora? Judging by the reviews, they have a short resource - up to 30 thousand kilometers. But recently more “tenacious” iridium analogues have appeared on the market. Their resource is about 60 thousand. By the way, such candles have a slightly smaller diameter of the central electrode. If on copper it is 2.5 millimeters, then on iridium it is 0.7 millimeters.
- Thread diameter. When purchasing, check with the seller for which engine you need spark plugs. Thus, 16-valve valves are equipped with elements with a smaller head size and thread diameter. Spark plugs from an 8-valve engine simply won’t work in a 16v Priora.
- Heat number. This parameter means the pressure at which it is easier to heat the candle. There is a cold and a hot type. The glow number of these candles is 20 and higher for the first and 11-14 for the second. Which spark plugs are better for Priora 16 cl.? There is no clear answer to this question. But there are also universal options. In this case, the glow number is from 11 to 20. These are the spark plugs that many motorists use. They behave well both in summer and in cold weather.
What are the dangers of choosing the wrong candles?
Correctly selected spark plugs for Priora are an essential condition for normal engine operation. The choice of spark plugs depends on what engine is installed in your car. 8 and 16-valve power units require this device with a different heating range. The heating range is the amount of thermal energy that the spark plug is capable of conducting into the combustion chamber of the fuel mixture.
Using a spark plug with an inappropriate heating range can cause problems and engine malfunctions. For example, using an excessively “warm” one causes it to overheat and not have time to cool down to the required temperature during the operating cycle of the engine.
Excessively “cold” igniters of the fuel mixture, operating in a temperature range of up to 400 degrees, on the contrary, are at risk of completely losing their functional properties due to the soot of burnt fuel formed on their electrodes.
What is the difference between spark plugs for 8 and 16 valve priors?
As mentioned above, Priors with 8 and 16 valve engines require different spark plugs. According to the recommendations of Auto-VAZ, spark plugs for 16 valve Priora must comply with the A17DVRM standard, and for 16v engines - AU17DVRM.
In fact, the differences between them lie solely in the design features - devices labeled A17 are designed for a standard hexagon, AU17 - for a smaller one.
You can see the features of marking of domestically produced products in the image.
Features of marking spark plugs of domestic production
What does the manufacturer recommend?
The Volzhsky Automobile Plant regularly uses spark plugs marked AU17DVRM.
. Judging by the reviews, the service life of these spark plugs is 25 thousand kilometers. This is quite good, considering the low cost - 400 rubles per set. But products with this marking perform poorly in cold weather. What spark plugs should I put on the Priora 16 valves for winter use? Here it is better to use “Priority A 15 DVRM”. These candles have a lower heat rating. They ignite more easily at subzero temperatures.
