Rating of the best spark plugs for Lada Granta, Priora and Kalina 2022

Tips for choosing spark plugs for Lada Priora

Automotive spark plugs are a material that has a certain service life. They cannot be used forever, and sooner or later every motorist is faced with the need for their planned, or even urgent, replacement. And here the problem arises of choosing which candles, which brand and which marking to replace. After all, each manufacturer produces spark plugs for a specific gasoline engine. Its operating temperature, speed, load - all this must be taken into account. Both the Lada company and the Priora car in particular are no exceptions.

Where are the spark plugs on Priora?

Spark plugs for Priora: choices

The manufacturer of Priora recommends installing domestically produced spark plugs, but they can easily be replaced with foreign analogues. Let's consider the classification:

• All spark plugs are divided into two-electrode and multi-electrode. Two-electrode ones have a side and a central electrode, while multi-electrode ones have one central and several side electrodes, respectively (usually 3). It is believed that multi-electrode ones have a greater lifespan and durability.

Spark plug

• Spark plugs differ in Priora and by type of material. So, the standard, classic option is copper electrodes. There are also rarer materials: iridium, platinum. Thus, iridium spark plugs on Priora are characterized by a smaller diameter of the central electrode, which ranges from 0.7 to 0.4 mm, while in standard nickel spark plugs this parameter is 2.5 mm. And a completely new product is pre-chamber spark plugs, in which the body itself is given the role of electrodes.
• Also, spark plugs are divided by thread diameter and size for the wrench head. Thus, spark plugs for a 16-valve Priora have a smaller thread diameter and wrench head size than spark plugs for a Priora 8-valve model.
• There are also four types according to such a parameter as heat value. The heat number is the average pressure at which it is easier to heat candles during testing. So, they are distinguished by types: cold type (heat number above 20), medium type (17-20), universal type (11-20), hot (11-14).

It is not always easy to figure out such complex technical parameters on your own, because a beginner does not understand many things, for example, what is the spark plug gap on a Priora. Therefore, when deciding which spark plugs to install on a 16-valve or 8-valve Priora, it is best to turn to specialists or follow the recommendations of the car manufacturer.

Spark plug gap

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.

Manufacturer's recommendations

It is unlikely that anyone will doubt which spark plugs the manufacturer will recommend for a Russian car? Naturally, domestic production. And this is natural - not always European, let’s say, refined quality can work effectively with our equipment. And so, spark plugs for Priora 16 valves must be marked - AU17DVRM. For an 8-valve engine – A17DVRM. A15DVRM are best suited for winter driving, as they are characterized by a low heat rating and, accordingly, will be easier to ignite in cold conditions.

Spark plug markings

However, many motorists choose foreign-made spark plugs for their Priora cars. Thus, the German companies BOSCH (WR7DC, FR7DCU), BERU (14R-7DU, 14FR-7DU) are very popular. The English company CHAMPION (RN9YC, RC9YC) is not far behind them. Automotive stores also have Czech ones, for example BRISK (LR15YC, DR15YC). These are high-quality, reliable spare parts, which, however, are no better or worse than domestic ones. Just a little more expensive.

Manufacturers and prices of analogues

It is not always possible to find a standard set of spark plugs for the VAZ-2170 in the nearest stores. Therefore, you can install four new parts, in accordance with the number of cylinders under the hood. The choice of elements, thanks to other manufacturers, has become more diverse:

• Bosch (manufactured in: Russia) au17dvrm. Price – about 250 rubles per set;
• Denso (Japan) w20epr. Price – 140 rubles per piece;
• Brisk (Czech Republic) lr15yc. Four pieces – 300 rubles;
• NGK (Japan) bcpr6es. One piece – 150 rubles;
• NGK (Japan) bcpr6es price per unit – 200 rubles;
• Bosch (Germany) fr7dcu. One piece – 100 rubles;
• Lecar Kit – 230-250 rubles;
• Valeo 246871. One piece – 170-180 rubles;
• Beru (Germany) 14R-7DU. One piece – 140-150 rubles;
• Champion (England) RN9YC. One piece – 230-250 rubles.

When to change spark plugs

According to the technical inspection regulations, spark plugs on Priora must be replaced every 30 thousand kilometers. However, this interval is not always maintained, and they are subject to emergency replacement.

The need for replacement can be determined by engine performance. It becomes unstable at idle, the engine starts poorly, and increased fuel consumption is observed. Also, her appearance can tell about her condition. First of all, you should pay attention to burnt electrodes, both central and side. Cracks on the insulator of the central electrode are also a bad signal; chips in it should also be a warning. General sootiness indicates poor ignition, and gasoline or oil indicates its complete inoperability.

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.

Reasons for incorrect spark plug operation

• One of the main reasons for their premature failure is low quality fuel. Gasoline may contain various impurities and may not meet standards.
• A malfunction of the valve system can also lead to malfunctions in the spark plug. As a rule, malfunctions of the valve system lead not only to burnout, but also to valves and pistons. So they may well become good “diagnosticians” for many automobile diseases.
• The wrong choice of spark plugs is another reason why they become covered with soot. So, if the heat rating is higher than recommended for a given engine, the tone may well fail.
• Sometimes oil gets into the combustion chamber, and then a black, oily coating forms on the spark plug, which makes it difficult to work.
• Black soot can not form from such reasons as contamination of the air filter, wear of the cylinder-piston group, or a crack in the insulator.
• Melting or burnout of the electrodes occurs if the cooling system is faulty.
• Even trying to start the engine in cold weather can cause the spark plug to fail. In this case, they may be flooded with a flammable mixture.

FakeHeader

Comments 51

The service life of these candles will most likely be shorter, since the material of the electrode has not been changed and the refractoriness is the same, and the thinner it is, it can burn

I change it every 10 thousand, I think it will last that long =)

something often happens, but it’s not easier to install iridium ones like that, they run 30k. and if it gets dirty, just rinse it by cleaning the carburetor. It will be more profitable in the end. p.s. brown coating is normal, lousy red or white or very black

my father-in-law told me so

But in general, for me it’s better to immediately take an expensive one than 3 times a cheap one, and change it every 10k is still too often, it’s not oil

Lada Priora - replacing spark plugs

Spark plugs do not always require complete replacement. Sometimes they can be annealed, which will return it to working condition. After this, clean with a soft steel brush to remove any remaining carbon deposits. Experienced motorists are advised to purchase a special gun to check the performance of spark plugs. This device can detect a defect in the spark breaking through to the spark plug body, or the spark wandering along the side electrode. But if, nevertheless, it is necessary to change the spark plug, then a certain procedure should be followed.

1. The first thing you need to do is remove the plastic casing from the engine block.
2. Then the mounting bolts of each coil are unscrewed, after which they can be removed using a flat-head screwdriver.
3. Next, the candles are unscrewed one at a time.
4. Since the spark plug is located in a recess, you will need a special long spark plug wrench to unscrew it.
5. Unscrewing a candle requires some effort, because high temperatures create a sticking effect on the thread.
6. Care must be taken as excessive force may damage the spark plug insulator. Removing the fragments will not be easy, and if they get into the cylinder, a labor-intensive operation will follow to disassemble the entire block.
7. After the candle has been removed, you need to carefully examine it. You should be alert to burnt electrodes, traces of gasoline and oil, mechanical defects in the insulator, and large deposits on the body. The condition of the candle is important not only in itself. It may also indicate the condition of the engine. So it is important not to neglect the opportunity to make a “diagnosis” of your motor.
8. A new spark plug is inserted into the head and then installed in place. Its twisting, on the contrary, should not take place with effort. Inaccurate movements can easily damage the threads of the cylinder head, which will require expensive repairs.
9. After the candles are in place, you need to carefully tighten them with a knob.
10. All other procedures are carried out in reverse order.

When faced with the need to replace spark plugs on a Priora for the first time, it is advisable to do this under the guidance of an experienced person. However, this procedure does not contain anything particularly complicated. As a last resort, you can watch the replacement of spark plugs on a Priora 16 valve video.

After all, it is always better to see once than to read several times.

How to replace? Preparing the tools

So, we have decided which spark plugs are better for the Priora 16 cl. Now you need to prepare the tools for replacement, namely:

• Spark plug wrench set to “16” (preferably with a strong handle).
• Slotted screwdriver.
• If you don’t have a wrench, a 16” socket spark plug head with an extension will do. It is advisable that it have a magnet or rubber band at the end - this will make it easier to remove the candle from the well.

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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.

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

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.

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.

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.

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.

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.