When servicing cars with gasoline engines, special attention must be paid to the correct selection of spark plugs. If you buy an incompatible part, this can provoke a failure of the power plant, lead to an increase in fuel consumption and a number of other troubles. Consider the main criteria for choosing spark plugs when self-servicing a vehicle. Despite its simple design, such a component is a high-tech development with precise geometric shapes and dimensions.
What is the threat of choosing the wrong candles?
There is a wide range of spark plugs on the auto parts market, which gives car owners some inconvenience when choosing the right model. The main difficulties are associated with the fact that each engine is designed for a specific modification of the plugs. When installing incompatible options, the following problems may appear:
- misfiring of the air-fuel mixture due to an excessively large gap between the electrodes;
- malfunctions in the functionality of the engine due to the low power of the spark;
- quick damage to the spark plug due to the sticking out of the electrodes.
Other types of malfunctions are not excluded, which negatively affect the comfort of vehicle operation.
Basic tips for choosing candles for a VAZ
Representatives of the AvtoVAZ auto concern advise choosing spark plugs taking into account the following features:
- Heat number. The indicator indicates the intensity of the removal of heat energy from the working part of the candle. The electrode sends excess heat to the skirt of the part in time, ensuring its proper functioning. When the energy is transferred too quickly, scale builds up on the surface of the candle, preventing spark breakdown. If the tap is weak, it will overheat the thin electrode. The phenomenon provides the formation of glow ignition, which prevents the normal operation of the power plant due to the ignition of the air-fuel mixture before the required time. With a balanced heat exchange, the spark plugs normally break through without creating carbon deposits.
- Spark gap. For the smooth operation of the engine, it is necessary to maintain the correct gap on the spark plugs - this parameter is determined by engine manufacturers for VAZ. It is needed due to the presence of the corresponding force in the electric arc. When the gap widens, the spark becomes unstable, which provokes misfires. If the distance narrows, the unit starts up faster, but when the accelerator pedal is pressed hard, there is a shortage of electric arc current. Such phenomena are due to the fact that in each ignition coil there is a special transformation ratio, which, by default, is 2,000 units. This indicates that when the engine is started, the parts generate up to 14 kW, and during normal operation, already 24 kW. In case of non-observance of the parameter, dangerous deviations in the functioning of the motor are not excluded.
- Departure of the main part of the electrodes. This property is an indispensable requirement for the correct operation of engines in VAZ vehicles. Candles for models of the domestic auto industry with 8-valve injectors and carburetors have electrodes slightly pushed forward. Such a design is associated with the following: the parts are located in the corner of the combustion chamber, where there is no normal air exchange. The presence of a departure contributes to a more efficient ignition of the mixture and the establishment of engine operation. If the spark plugs are in an engine with multiple valves, where the inserts are in the center of the valve heads, it is better to choose a deep core plug. Such a modification will eliminate the problem of electrode failure when interacting with the piston bottom, as well as prevent the formation of carbon deposits on important elements.
- Number of electrodes. In the past, spark plug suppliers argued that the more electrodes a part has, the better it is. In case of "burnout" of one element, the candle automatically switches to another, serviceable one, which has a positive effect on its service life. But in practice, the situation looks different: if the fuel-air mixture is sprayed unevenly (due to poor air exchange in the combustion chamber), and the spark ends up in the exhaust accumulation zone, this can provoke a misfire and incorrect engine operation. The factor increases the likelihood of catalyst and engine oil wear, which can become a critical breakdown for AvtoVAZ cars.
- The reputation of the manufacturing company. An important selection criterion is the rating of the company that supplies the product to the market. Experts recommend purchasing spark plugs from trusted suppliers. In this case, the components will work properly and for a long time without disrupting the functionality of the power plant.
Guided by the listed tips, you can choose a truly high-quality part, reducing the frequency of vehicle maintenance.
The best spark plugs for VAZ - TOP-9
The list contains 9 modifications of spark plugs that are suitable for VAZ cars. The selected models are distinguished by good build quality and reliability in operation. This is the best there is on the market.
The best spark plug for VAZ - NGK B9Eg-3530
The undisputed leader of the rating is the NGK B9Eg-3530 model, which is supplied to AvtoVAZ enterprises as a standard part for cars.
The product has a nickel coating on the electrodes, which prevents the appearance of scale and is responsible for the correct operation of the spark. This saves fuel and prevents catalyst wear. The advantages of the NGK B9Eg-3530 spark plug include:
- high build quality;
- lack of cheap analogs and fakes on the market.
No flaws were found during testing of NGK B9Eg-3530 candles. The owners claim that the part copes with its tasks with high quality and serves as long as possible.
Denso PK20PR-P8 for VAZ
The next line in the list is occupied by the Japanese product Denso PK20PR-P8. This kit features a good build and a great service term. The presence of plastic solders on the electrodes contributes to the correct spark slip and the resistance of the part to corrosion or mechanical stress.
The model is in demand due to the optimal price-quality ratio, as well as the prevalence in the market. The negative sides are associated with the difficulties of choosing the right series due to the wide range in the company's model range.
Good candles Brisk Extra Dr15Tc-1
The owners of Lada Kalina cars and other relatively new models of AvtoVAZ speak positively about Brisk Extra Dr15Tc-1 candles. The outlet has a unique design of working elements, has 3 electrodes and guarantees the elimination of the problem of misfire even on old batteries or when using low-quality fuel.
An equally important advantage of the candle is the almost complete absence of fakes on sale. Candles are difficult to counterfeit due to the structure of the insulators and electrodes. The list of advantages also includes the low cost and stability of the part.
However, the Brisk Extra Dr15Tc-1 candle is far from suitable for all VAZ models.
Bosch Platinum WR7DP
The product of the German company Bosch has earned respect from car owners due to its compatibility with the latest car models from VAZ. The platinum-plated version ensures the correct operation of the system for 60 thousand kilometers, which is a record figure in comparison with standard releases.
The presence of a thin core with a competent fit to the insulator contributes to the timely transfer of excess thermal energy and stabilization of the engine's behavior at peak speeds.Such features are highly appreciated by fans of high-speed driving or movement in poor cross-country conditions.
The advantages of this series of spark plugs boil down to excellent workmanship, unusual design and stability. The only negative is the slightly overpriced price.
Bosch WR7DPX
The five top spark plugs for VAZ include the BOSCH WR7DPX series, which is produced in China, but fully complies with European quality standards. The model is adapted for power plants in Lada X-ray cars. It has a thin electrode coated with a special alloy, which contributes to correct operation for a long time, even with a critical battery charge.
The reinforced insulating layer ensures efficient heat dissipation from the arc. These characteristics contribute to quality performance, especially in heavily loaded engines that operate under conditions of frequent overheating and high crankshaft speed.
BOSCH WR7DPX is popular because of its stability, long service life and the minimum number of counterfeits. However, such candles are quite expensive, and they are not installed on simple motors.
NGK BPR6 ES-11
This series of spark plugs is well suited for Lada Granta cars. NGK BPR6 ES-11 is made in a French company, which is a guarantee of high quality workmanship. At the same time, spark plugs are relatively cheap, so their appearance is far from ideal.
But external shortcomings are justified by stable operation for a long time and normal adaptation to partial wear of the piston - spark plugs continue to generate a spark even in contact with oily substance and soot.
The model is ideal for both old and new engines. Its main disadvantage is the variety of counterfeits on sale.
BRISK LR15YCY-1
BRISK LR15YCY-1 - high-quality spark plugs with increased overhang of the working part. They are suitable for VAZ 2107 carburetor engines with an 8-valve configuration.
In terms of working properties, this budget kit is not inferior to many expensive editions. Therefore, it can be used not only for cars from VAZ, but also on some used foreign cars.
The product generates a spark even at a voltage of 6.2 V within the mains, which is much better than competing models. The only drawback of candles is the high price.
DENSO W20EPR-U11
DENSO W20EPR-U11 kit is designed for injection engines, providing an optimal balance between price and quality. The model is relevant for old VAZ 2106 cars and more recent novelties of the domestic auto industry.
It implements a special technology that improves the stability of spark generation. Such innovations have positively influenced the life of the part and reduced the frequency of auto maintenance. It also reduced the voltage drop to 6.5 V.
EZ A17DVRM
The rating is completed by the spark plug ЗЗ А17 ДВРМ. The kit is widespread in the domestic market due to its stability and good workmanship. In the original box, it is impossible to see a defective version or a model with a knocked-down gap. Additional advantages include active work even when the voltage drops to 6V in the on-board network. Such candles are common on VAZ 2106 cars due to their low cost.
Conclusion
The choice of a spark plug for a VAZ is an important process that requires special attention from the car owner. Therefore, in order not to be mistaken with the selection of a suitable model, all the nuances and selection criteria should be taken into account.
|| list |
- What is the threat of choosing the wrong candles?
- Basic tips for choosing candles for a VAZ
- The best spark plugs for VAZ - TOP-9
- NGK B9Eg-3530
- Denso PK20PR-P8
- Brisk Extra Dr15Tc-1
- Bosch Platinum WR7DP
- Bosch WR7DPX
- NGK BPR6 ES-11
- BRISK LR15YCY-1
- DENSO W20EPR-U11
- EZ A17DVRM
