What spark plugs to put on a VAZ 2107 Injector

VAZ spark plugs - how to choose, the best

Tips on how to choose spark plugs for VAZ cars: 9 popular models of spark plugs, nuances of choice. Video about installing spark plugs.

What are the dangers of choosing the wrong candles?
Basic tips for choosing spark plugs for VAZ
The best spark plugs for VAZ - TOP-9
Denso PK20PR-P8
Brisk Extra Dr15Tc-1
Bosch Platinum WR7DP
Bosch WR7DPX
NGK BPR6 ES-11
BRISK LR15YCY-1
DENSO W20EPR-U11
EZ A17DVRM
Video about installing spark plugs

When servicing cars with gasoline engines, special attention should be paid to the correct selection of spark plugs. If you buy an incompatible part, this can cause failure of the power plant, lead to increased fuel consumption and a number of other troubles. Let's consider the main criteria for choosing spark plugs when servicing a vehicle yourself. Despite the simple design, such a component is a high-tech development with precise geometric shapes and dimensions.

An error in choosing spark plugs can “kill” the engine. Spark plugs can affect fuel consumption. There are “incompatible” spark plugs and high-voltage wires. In this article, we'll look at what you really need to know and consider if you service your car yourself. After all, this small device, which looks so simple, is in fact a complex and high-tech product with strictly adjusted dimensions, made from materials specially designed for candles.

Spark plug device

Device

The candle is assembled in a metal case, which has a threaded part (thread diameter from 8 to 18 mm) and a hexagon (from 13 to 25.4 mm). A ceramic insulator is installed in the housing, with an electrode running through the center. The lower part of the insulator forms a thermal cone, which is placed on a heat sink for better heat removal. Depending on the design, a resistor or glass sealant is placed between the central electrode and the contact rod. The assembled insulator is rolled into the housing. In the lower part, one or more side electrodes are welded to the end of the housing.

“Hot” and “cold” or what is the heat rating

The part of the spark plug that is inside the combustion chamber must have a strictly defined temperature when the engine is running at full power - from 500 to 600 degrees Celsius. Engines with different degrees of boost have different thermal load, based on which the size of the thermal cone and the contact area between it and the housing are selected.

If the temperature is lower, the candle will not “self-clean” and will become covered with soot. After some time, the electrodes will close and the spark plug will stop working. This happens when the installed spark plugs are too “cold” - they have too high a heat rating: for example, if instead of A17 you install A23, the engine “doesn’t like” such spark plugs, it will begin to have difficulty starting, often “triple”, and shake at idle. The engine loses power and gasoline consumption increases. This is, of course, bad.

It is much worse when spark plugs that are too “hot” are installed in the engine, that is, those with a lower heat rating. Due to the high temperature of the electrodes and the thermal cone of the insulator, the combustible mixture, entering the cylinder, is ignited not by a spark, but by the hot parts of the spark plug. This happens “spontaneously” - sometimes earlier, sometimes later, the engine suddenly loses power, runs after the ignition is turned off, and the valves and piston may “burn out.”

Highly accelerated, high-speed engines are usually equipped with “cold” spark plugs. They feel great under heavy loads, but long periods of idling or light loads will lead to the formation of a layer of carbon deposits.

Engines with an average degree of boost, for example VAZ engines, require spark plugs with an average heat value.

Low-speed, unboosted engines are equipped with spark plugs with low heat ratings – “hot”.

What you need to know about the marking of spark plugs and which ones to put on the VAZ-2107

According to domestic GOSTs, this is A17DVRM , where 17 is the heat number (candles are produced from 10 to 23 units). The remaining letters indicate design and dimensional features. Today we need the letter “P” to indicate that a noise suppression resistor is built into the spark plug.

Here is an example of NGK markings: BPR6ES11 . Here the number 6 is the heat number (on a scale from 2 to 13 units), the letter R indicates the presence of a resistor. Expensive brands of candles have the letter “Z” instead of “R” - this is an inductive resistor, it does not lead to loss of spark energy. The number “11” at the end of the mark indicates a gap of 1.1 mm. These spark plugs are suitable for injection “seven”.

For carburetor models, choose spark plugs without the letter “P” or “R” in the marking: A17DVM, BP6E . They do not have a built-in noise suppression resistor, which will weaken the already not very powerful spark.

Expensive spark plugs with platinum and iridium electrodes have good performance and last a very long time. But it is very difficult to find a model for carburetor engines among them - they all come with a built-in resistance. The solution is to select a model with an inductive resistor (Z in the marking).

Recommended spark plug kits for Lada Vesta

Many car enthusiasts do not attach much importance to the choice of devices for igniting the combustible mixture. And in vain, in a modern engine they play no less a role than, for example, the timing belt and its performance. It doesn’t hurt to remember here that VAZ offers several engines on Vesta, each of which has its own design features.

Factory recommendations for choosing mixture igniters are similar for all modern AvtoVAZ models. Do not forget to take into account the fact that they are equipped with both eight-valve and sixteen-valve engines. The official data for replacing spark plugs on the new Lada Vesta sedan is as follows.

8-valve engine VAZ-11189

A17DVRM – JSC “Robert Bosch Saratov”.
14R-7DU – Beru.
RN9YC – Champion.
BPR6ES – NGK.
W20EPR - Denso.
LR15YC-1 – Brisk.
WR7DCX – Bosch.

16-valve engines VAZ-21129 and VAZ-21179

AU17DVRM – JSC “Robert Bosch Saratov”.
DR15YC-1 – Brisk.
FR7DCU - Bosch.
Q20PR-U11 – Denso.
BCPR6ES – NGK.

Renault-Nissan HR16DE/H4M 16-valve engine

LZKAR7D – NGK.

The differences between the listed devices for igniting a combustible mixture lie not only in the name and manufacturer, but also in design features. Kits for eight-valve internal combustion engines are unscrewed with a standard spark plug wrench, and for sixteen-valve engines they are designed for a reduced hexagon size.

Marketing technologies are actively promoting multi-electrode, iridium and platinum igniters. The cost of such products is higher than that of ordinary ones. If you have the opportunity, you can join the latest technologies, but reviews from owners assure that single-electrode devices are quite functional and reliable.

How to replace spark plugs on a VAZ 2107 injector?

On a properly operating VAZ 2107 engine, spark plugs can last more than 30,000 km. However, it is recommended to check the spark plugs after every 10,000 km and, if necessary, clean them. In the process of checking and replacing spark plugs, you should be very careful and careful: before unscrewing the spark plugs, you must clean the seats. This will prevent dirt from entering the engine cylinders. Also, do not use excessive force, as a large load on the cylinder block can lead to damage.

Already registered? Sign in here.

There are currently 0 users on the page

There are no users viewing this page.

VAZ 2107 is a middle class car, produced in Russia for more than 30 years. The five-seater sedan is universal and can be used both on city roads and in rural areas. The car is presented in several modifications, which differ in power plants. The first models were equipped with carburetor engines with 4 and 5-speed gearboxes. Later, engines with fuel injection appeared. The second version is characterized by economical gas consumption.

Stable engine operation is ensured by high-quality spark plugs. They can be of both domestic and foreign production. The factory equipment offers spare parts of the A17 series. Their resource is small, so analogues are often installed. For example, Japanese spark plugs NGK VAZ 2106.

To choose the right candles, you need to be guided by only two important parameters:

Dimensions . If you buy spark plugs that are larger or smaller than the nominal threaded connection, you will not be able to install them correctly. In this case, they simply will not spin.
Heat number . A very important parameter that can be larger or smaller. The lower this number, the quieter the car is designed for driving. If you are the owner of a standard family car, then you need to choose these spark plugs.

A completely different matter is a large number, which allows the electrodes to withstand enormous thermal loads. These spark plugs are designed for use on sports cars that are designed for fast driving.

Before you go to the store to buy spark plugs, you need to read the technical documentation for the car. It will detail the parameters that also apply to devices designed to create spark discharges.

Among other things, it is worth considering the latitudes in which the car is used. If this is the southern part of the country, then the service life of such spark plugs will be much less. Northern and middle latitudes imply long-term operation of devices.

Characteristics of candles

The service life of candles does not particularly depend on the manufacturer, since we are not talking about stuffed technological equipment. In our case, this is a piece of metal of the correct shape with dielectric elements of the body. If the spare part meets certain requirements, then there is no need to fool your head.

They should not lose their insulating properties at temperatures of a thousand degrees;
Without interruption, they must provide a stable voltage of 40 kilovolts;
Resistance to thermal shock;
The metal must withstand chemical reactions at the installation site;
The thermal conductivity of electrodes and insulators must comply with the standards.

When replacing, visually compare the old and new spark plugs.

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.

Significance of the ignition system

The importance of the ignition mechanism of the combustible mixture in the operation of internal combustion engines can hardly be overestimated. That is why replacing spark plugs on a Lada Vesta must be done in a timely manner. Do not forget that their unsatisfactory condition can cause:

Detonation of the mixture in the combustion chamber.
Reduced motor power.
Overloading and heating the catalytic converter.
Excessive consumption of fuel.

Problems with spark plugs can also signal problems in other vehicle systems. For example, a product with obvious traces of oil on the electrodes, especially on the threaded part, indicates the unsatisfactory condition of the oil seals. Unfortunately, the first reviews of the Lada Vesta pay more attention to the exterior and driving comfort than to technical problems.

How to replace spark plugs on a VAZ 2107 injector?

DIY replacement instructions

Replacing spark plugs on VAZ 2114 and 2115 is not a complicated process. This work can be performed by any motorist, following the step-by-step instructions given below.

Tools and materials

To carry out the procedure you need to prepare:

key for removing protection;
a set of round probes;
spark plug key;
new set of SZ.

To avoid counterfeiting, you should purchase original products.

The process of dismantling and replacing SZ

Unscrewed from the SZ socket
The procedure for unscrewing and replacing spark plugs must be performed on a cooled engine to avoid burns.

The process itself consists of the following steps:

First you need to open the hood. Then you need to remove the protection from the engine, if present.
After removing the decorative trim, you need to remove the protective caps with high-voltage wires that are placed on the contacts. The caps should be removed carefully so as not to damage the wiring.
The areas near the NW should be cleared of dirt so that they do not get into the engine cylinders.
Now, using a spark plug wrench, you need to unscrew the S3 from the cylinder head. You can start twisting from any side. First you need to move it from the dead center, and then you can carefully unscrew the SZ from the socket.
Having turned out the old SZ, you need to wipe the thread with a rag.
Before screwing in new products, it is advisable to check the gap on each of them. For cars with an injector, it should be from 1 to 1.13 mm.
Installing the SZ is the same simple procedure as unscrewing; it is carried out in the reverse order. New products are placed in the seats of old candles. You need to screw it in carefully so as not to damage the threads in the cylinder head or on the product.
Next you need to put on the ends of the high-voltage wires. In this case, you need to make sure that the numbers of the wires that are printed on them match.
At the final stage, the decorative overlay is returned to its place.

After replacing the SZ, it is necessary to observe how the engine operates. If it works intermittently, it is possible that one of the SZ has defects. To detect it, you need to sequentially disconnect each high-voltage wire. A faulty spark plug should be replaced.

Price issue

High-quality products always cost more. Domestic products are several times cheaper, but the quality leaves much to be desired. Therefore, it is worth buying imported candles that will last much longer than domestic ones. At the same time, the service life of the engine will be extended, and fuel will be consumed more economically.

1. Czech SZ Brisk (price per set from 275 rub.)

2. Set SZ Denso (price from 121 rub.)

3. SZ company NGK (price from 180 rub.)

Loading …

How to choose spark plugs

To choose the right candles, you need to be guided by only two important parameters:

Dimensions . If you buy spark plugs that are larger or smaller than the nominal threaded connection, you will not be able to install them correctly. In this case, they simply will not spin.
Heat number . A very important parameter that can be larger or smaller. The lower this number, the quieter the car is designed for driving. If you are the owner of a standard family car, then you need to choose these spark plugs.

A completely different matter is a large number, which allows the electrodes to withstand enormous thermal loads. These spark plugs are designed for use on sports cars that are designed for fast driving.

Before you go to the store to buy spark plugs, you need to read the technical documentation for the car. It will detail the parameters that also apply to devices designed to create spark discharges.

The gaps in the spark plugs should be set depending on the ignition system and power system. If the spark plug gap is larger than required, gasoline consumption will increase; if the gap is smaller than required, the car will jerk at low speeds.

According to the operating manual for VAZ-2105, VAZ-2107, the gap between the spark plug electrodes for a contact ignition system (KSZ) should be 0.5-0.6 mm, for a contactless ignition system (BSI) - 0.7-0.8 mm, spark plug gaps in an injection engine are 1.0-1.3 mm.

In summer, the gap in the spark plugs can be slightly increased, in winter - reduced, literally by 0.1-0.15 mm.

Below are several options for the condition of the spark plugs, from which you can draw conclusions about the operation of the engine:

The electrodes of the spark plugs are covered with black carbon deposits - the fuel mixture is over-rich; the carburetor needs to be checked.
spark plug electrodes are covered with a whitish coating - the fuel mixture is too lean
burnt out electrodes may be due to an incorrectly selected type of spark plug, too early ignition angle, or the use of poor gasoline (low octane number)
Oily electrodes - usually appear on the engine with age and indicate the need to repair the piston group.

Advantages and disadvantages of the three best spark plugs according to experienced mechanics

Nickel spark plug with original design NGK BPR6ES saves fuel consumption. The manufacturer claims that this model has a lifespan of twenty-five thousand kilometers. In practice, it can withstand even more, according to experienced car owners.

The only downside is the rapid accumulation of carbon deposits on the surface of the part. Otherwise there are only advantages:

long lifespan;
the price/quality ratio is excellent;
rapid ignition.

Second place is occupied by Bosch Group, A17DVRM 0.7. Experienced mechanics say that these spark plugs guarantee rapid ignition at minus fifteen degrees below zero. The parts from this manufacturer have no disadvantages. But here are some of the advantages:

long lifespan;
fuel economy;
positive effect on the functioning of the power unit.

In third place are spark plugs of the NGK 4919 BCPR6EIX-11 model for power units of the Lada Granta FL. Among the disadvantages, experienced mechanics note that the cost is too high. The advantages of this candle are as follows:

durable electrode, resistant to corrosion;
improving the performance of the Lada Granta FL power unit;
excellent quality.

Let's sum it up

Taking into account the above information, it becomes clear that choosing Lada Granta spark plugs for an 8-valve engine is quite simple. You can use both original solutions supplied by the manufacturer and analogues from other manufacturers.

The main thing is to choose the spark plugs correctly, that is, taking into account the basic parameters for an internal combustion engine of this type (heat rating, physical dimensions, etc.). It is also important to buy spark plugs from trusted sellers to eliminate the possibility of purchasing a fake.

We also recommend reading the article on how to determine the condition of the engine by spark plugs. From this article you will learn how to diagnose an engine using spark plugs, as well as what nuances you should pay attention to as part of such a check of the condition and quality of operation of the power unit.

Finally, we note that the above basic rules and recommendations are also relevant for many other cars with a similar type of engine (for example, selecting Grant 16 valve spark plugs and replacing them.) Only the parameters of the spark plugs themselves will differ, and there may also be some individual nuances in terms of replacement on a motor of one type or another.