The durability of the engine and its service life largely depend on the condition of all its components and parts, as well as on the quality of consumables that are used to service the power unit. One of the most important elements on which the trouble-free operation of the engine directly depends are the parts that ignite the fuel, spark plugs. According to the Priora operating instructions, after every 30 thousand km, it is necessary to replace the spark plugs. However, this interval can vary significantly in one direction or another, depending on many factors that should be considered in detail. In addition, you need to have a good understanding of what spark plugs can be installed on a VAZ 2170.
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.
The best spark plugs for Priora
During surveys on website forums, it was revealed that most of all Prior owners trust domestic spark plugs AU17DVRM and spark plugs NGK N11. It is these products of domestic and Japanese production that are the most reliable spark plugs for AvtoVAZ engines.
NGK spark plugs for Lada Priora
The service life of these spark plugs can reach up to 30,000 km of vehicle mileage, which is quite good. But these figures can only be obtained with proper use of the car, because even new spark plugs can quickly fail. Quite often, spark plugs fail precisely because the internal combustion engine is started in cold weather. They are filled with gasoline and eventually pierce the insulator or electrode, after which the spark plug becomes inoperative.
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.
LADA spark plugs: top 10 options
The rating contains 10 modifications of spark plugs, without division into specific car models.
10th place: ZZ A17 DVRM
The list of the best offers opens with an effective model that is in demand among a large number of buyers. Such prevalence is ensured by the stable quality of products. In the original packaging it is impossible to find a defective part or a spark plug with a broken gap. A significant advantage of the products is the ability to work actively even when the voltage drops to 6V in the on-board network. Similar spark plugs in the VAZ 2107 are often found due to their moderate cost.
The indicators are overshadowed by bad statistics - as of 2020, 35% of the kits on the market are fakes, which forces motorists to carefully select products in stores.
- reasonable price;
- durable;
- simple design.
9th place: TZ 17 DVRM
The next representative of the rating implies the presence of as many as three electrodes on the working part of the device. A large number of motorists install such spark plugs on a VAZ carburetor or even an injection type. Thanks to the use of advanced developments in design, the manufacturer has increased the service life of the electrode.
Pirate copies also play a role here - there are a large number of them, which makes buyers cautious about purchasing products.
- good performance;
- long period of operation;
- wide use.
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 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. 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.
What spark plugs are currently best for VAZ 16 cl.? When choosing, you should give preference to the original - AU17DVRM. By the way, the packaging says “BOSH Group”, but the products were manufactured in Russia. For those who want to use an analogue, NGK candles are suitable. They are distinguished by a good resource and low cost.
Recommended spark plugs for Lada Priora 16 valves
The manufacturer recommends using domestically produced single-electrode spark plugs on the Priora, type: AU17DVRM. These spark plugs can be replaced with imported analogues of the following brands: Bosch, Denso and NGK.
It should be noted that it will be impossible to install spark plugs from 8-valve cars on a 16-valve engine, since the hex nut on the spark plug is larger and simply will not fit into the spark plug well of a 16-valve engine. Therefore, it is recommended to purchase spark plugs designed specifically for your engine.
Table of interchangeability of spark plugs for all Lada Priora engines (depending on the number of valves).
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.
Which spark plugs for VAZ are better to choose?
There are a large number of different modifications of the part, which complicates life for motorists. The problem is that each motor is designed for a specific type of spark plug. If you supply the wrong part, a number of negative consequences can arise.
- Misfire of the mixture due to the gap between the electrodes of the element being too wide.
- Interruptions in the operation of the internal combustion engine caused by too low spark power.
- Instant failure of the device due to too much electrode protrusion.
Also, depending on the inconsistencies present, other malfunctions may “pop up” that reduce the comfort of using the car.
What to look for when choosing.
Specialists from the AvtoVAZ plant recommend selecting spark plugs according to a number of parameters.
- Heat number. The parameter characterizes the rate of heat removal from the working part of the candle. At the same time, the electrode transfers excess heat to the spark plug skirt in a timely manner, which ensures stable operation of the part. If energy is removed too quickly, scale forms on the working part of the part, which prevents normal spark breakdown. If the withdrawal is too slow, the thin electrode overheats. The process provokes the formation of glow ignition. This prevents the engine from operating normally due to detonation of the mixture or its early ignition. Under normal thermal conditions, a spark adequately breaks through the spark plugs and does not form excessive carbon deposits.
- Spark gap. Some users know that for the engine to operate correctly, the spark gap on the spark plugs must be maintained. The working gap on VAZ spark plugs is strictly set by the manufacturer of the power plant and is necessary due to the fact that the formed electric arc has a certain strength. As the distance increases, the spark loses stability, which can lead to misfires. In the opposite case, easier starting of the engine is ensured, but when the gas is released, the electric arc current may not be enough. This is justified by the fact that each ignition coil has a certain transformation ratio, usually equal to 2000 units. This means that during the start-up of the internal combustion engine, the elements produce up to 14 kW, and during normal operation it is already 24. Consequently, failure to comply with this parameter can lead to serious disruptions in the operation of the motor.
- Departure of the working part of the electrodes. The parameter is critical for adequate operation of the power plant. The spark plugs on the VAZ 8-valve injector, as well as for carburetor models, have electrodes strongly pushed forward. This is due to the fact that the structural parts are located in the corner of the combustion chamber, where there is no adequate ventilation. The overhang of the working part allows for better ignition of the mixture and stabilizes engine operation. If the spark plugs are mounted in a multi-valve engine, where the inserts are located in the center of the valve head, it is recommended to install spark plugs with a deep-set core - this will prevent damage to the electrodes by the piston bottom and an abundance of carbon deposits on the structural elements.
- Number of electrodes. Initially, manufacturers position this parameter as a definite plus. When one electrode “burns out,” the spark plug switches to another, which significantly increases its service life. However, not everything is as simple as it seems at first glance. If the mixture is sprayed unevenly in the cylinder (poor ventilation of the combustion chamber), and at this moment the spark jumps to the shadowed part (the place where the exhaust remains), misfire may occur, which will lead to unstable operation of the power plant. Additionally, this fact increases the wear of the catalyst and engine oil, which is critical for VAZ cars.
- Manufacturer. The manufacturer of the product is also an important parameter. Users recommend buying from trusted brands that have been on the market for a long time. The cost of such candles will be significant, but with proper selection and operation they will work for a long time and without significant complaints.
By adhering to the specified parameters, a car enthusiast can buy a fairly high-quality product, while saving on the frequency of car servicing and repairs.
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.
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.
What is a candle for?
A car's spark plug is one of the main elements of the internal combustion engine. It is this that forms a spark in the combustion chamber of the engine, thereby igniting the air-fuel mixture in the cylinder block, which sets the piston group in motion. For each car there are certain spark plugs that are recommended by the manufacturer. They differ in the long thread of the spark plug, the number of contacts, resistance and hex head.
