Spark plugs for VAZ 2107 injector » Drive

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.

What spark plugs to install in a VAZ 2107

Car ignition system

Spark plug gap, mm.

NGK contact ignition system:

BP6ES code 7811 (standard)
BP6ES V-LINE No. 4 code 5637 (with a v-shaped cutout on the central electrode)
BPR6EIX code 6637 (with resistor and iridium center electrode)
BUR6ET V-LINE No. 1 code 2876 (with resistor, three-electrode, with a v-shaped cutout on the central electrode)

NGK contactless ignition system:

BPR6ES code 7822 (standard with resistor)
BPR6ES V-LINE No. 2 code 2268 (with resistor and v-shaped cutout on the central electrode)
BPR6EIX code 6637 (with resistor and iridium center electrode)
BUR6ET V-LINE No. 1 code 2876 (with resistor, three-electrode, with a v-shaped cutout on the central electrode)

NGK BPR6ES-11 code 4824 (standard with resistor)
NGK BPR6ES-11 V-LINE No. 13 code 5339 (with resistor and v-shaped cutout on the central electrode)
NGK BPR6EIX-11 code 3903 (with resistor and iridium central electrode)
NGK BUR6ET V-LINE No. 1 code 2876 (with resistor, three-electrode, with a v-shaped cutout on the central electrode)

When to change spark plugs in Lada (VAZ) 2107

If original spark plugs are used, then the replacement schedule is 15-20 thousand kilometers. For others it is different and replacement of spark plugs may be carried out later. In this case, it is necessary to monitor their quality of work. If problems arise with starting the engine or the unit begins to stall, then it is necessary to install new spark plugs.

Automotive electrical
Spark plug

Spark plug FINWHALE VAZ 2108-2110 (injector) 1 piece

Spark plug VAZ 2110 APS injector 1 piece AU17 dvrm ind. pack F01H7K0079HZ3

Spark plug BOSCH, x4 VAZ 2108-010 injector 8-valve 1.1mm WR7DCX+ 0 242 235 915

A17DV-1-Spark plug VAZ 2101-07 Ufa

Spark plugs BRISK SUPER LR15YC-1 (VAZ) injector 8 valves with resistor gap 1.1 set

Spark plug NGK VAZ-2101-2107,21213(1.6) BP6E box 4 pcs.

Spark plug BOSCH, x4 VAZ 2101-09 8 valve 4 electrodes WR78 0 242 232 803

Spark plug VAZ 2101-07 A17 dvrm 1pc EZ group. pack

Spark plug FINWHALE (VAZ 1118-19 (Kalina), 2108-2110 (injector), 2123) (set of 4 pieces)

Spark plug AU 17 dvrm EZ injector VAZ 2110 set.

Spark plug FINWHALE PRO (VAZ 2108-2109 1 piece

Spark plug FINWHALE (VAZ 2101-2107, ODA 1.6 ZAZ 1102 Tavria) (set of 4 pieces)

Spark plug BOSCH, x4 VAZ 2108-010 injector 8 valve Yttrium WR7DCX+ F01H7B0150HZ6

Spark plugs Bosch Group, A17DVRM 0.7 4pcs

Spark plug VAZ 2108-10 injector 16 valves 4pcs AU17 dvrm Behind the Wheel

Spark plug FINWHALE PRO (VAZ 2108-2110 injector 1 piece

Spark plug CHAMPION, x1 VAZ 2108-15 injector OE048/R04

Spark plug VAZ-2108-2190, 21073 (8 class engineer) EXTRA (set of 4 pcs) (1331)

Spark plug FINWHALE PRO (VAZ 2110 (16 valve injector) 1 pc.

Spark plug FINWHALE (VAZ 2110 (16 valve injector) (set of 4 pcs)

A14DV-Spark plug VAZ-2101-07, GAZ-14, AI-76 Engels

Spark plug BRISK L15Y (J-4pcs) vaz.carb.2101-08

A17DV-Spark plug VAZ 2101, -02, -03, -04, -05, -06, -07, -21 Ufa

Spark plug VAZ 2110 Injector Vl13 Bpr6Es-11 5339 Ngk 5339

Bosch Wr7dcx+ Spark plug 2108-2112 (injector, 8 cells) (1 piece) 0242235707

Spark plug Champion, X1 VAZ 2108-15 Injector Oe048/r04

GAZ Spark plug dv.4216,4213 EURO-3\VAZ-2101-21213 (carbure)

LADA Wiring harness from distributor to spark plugs VAZ-2107

Spark plug FINWHALE (VAZ 2101-2107, ODA 1.6 ZAZ 1102 Tavria) (set of 4 pieces)

Spark plug NGK CR6HSA

Spark plug VAZ 2110 Injector 16 valve 1 piece Vl12 Bcpr6E 6129 Ngk 6129

Spark plug FINWHALE (VAZ 2110 (16 valve injector) (set of 4 pcs)

Spark plug BRISK L15Y (J-4pcs) vaz.carb.2101-08

ZAZS Candle A17DV (APS) 406-409 VAZ-2101-2107

Spark plug FINWHALE PRO (VAZ 2110 (16 valve injector) 1 pc.

Spark plug NGK BPR6E (6464)

Spark plug VAZ 2101-09 APS 1 piece A17 DV individual pack.

Spark plug FINWHALE VAZ 2108-21099 1 piece

High-voltage wires for VAZ 2105-2107, 21214, set 4 pcs.

Spark plug Brisk VAZ 2110 Injector Extra Lr15Tc-1-J Lr15Tc-1-J

Ignition coil (module) for VAZ 2111, 1118, 2170 (8 cells) (SC 0111) startvolt (OEM: 2111-3705010,F000 ZS0 211)

We will select NGK spark plugs (Japan-France) for carburetor and injection engines of “classic” VAZ cars (2101, 2102, 2103, 2104, 2105, 2106, 2107) with contact and non-contact ignition systems.

The list below is far from complete, but includes the most common and most frequently used NGK spark plugs on “classics”.

General requirements for spark plugs for carburetor and injection engines VAZ 2101-2107

— Heat number — 17

— Length of the threaded part — 19 mm

— The heat cone protrudes beyond the spark plug insulator

— The gap between the electrodes is 0.7-0.8 mm (contact and non-contact ignition systems, carburetor engine), 0.9-1.1 mm (injection engine)

— Availability of an interference suppression resistor for spark plugs for engines with non-contact ignition systems and injection engines

— Hexagon (nut) — 21 mm

Selection of NGK spark plugs for “classics”

Contact ignition system

BP6ES code 7811 (standard)

BP6ES V-LINE No. 4 code 5637 (with a v-shaped cutout on the central electrode)

BPR6EIX code 6637 (with resistor and iridium center electrode)

BUR6ET V-LINE No. 1 code 2876 (with resistor, three-electrode, with a v-shaped cutout on the central electrode)

Contactless ignition system

BPR6ES code 7822 (standard with resistor)

BPR6ES V-LINE No. 2 code 2268 (with resistor and v-shaped cutout on the central electrode)

BPR6EIX code 6637 (with resistor and iridium center electrode)

BUR6ET V-LINE No. 1 code 2876 (with resistor, three-electrode, with a v-shaped cutout on the central electrode)

Injection (injection) engines

BPR6ES-11 code 4824 (standard with resistor)

BPR6ES-11 V-LINE No. 13 code 5339 (with resistor and v-shaped cutout on the central electrode)

BPR6EIX-11 code 3903 (with resistor and iridium central electrode)

BUR6ET V-LINE No. 1 code 2876 (with resistor, three-electrode, with a v-shaped cutout on the central electrode)

Notes and additions

— Spark plugs for a contact ignition system, with some exceptions, are not recommended for installation on engines with a contactless system or fuel injection, but vice versa is possible.

— The “classic” injection engines discussed in the article are 2104 and 21067.

Why after 10? Xs the book says about replacement every 30. An extra 200 rubles at a maintenance cost of about 3000-4000 doesn’t make a difference, given that I have three maintenance jobs a year. I try not to tinker with the car myself, I don’t feel like it.

And who buys iridium and why - ask those who buy

We are from peasants, we are not taught to read and write. We do not read books. 200 rubles is not at all extra, and 4 NGK candles are not worth 200 rubles. She's a little thing about a hundred rubles. costs.

Maintenance on a Lada costs 1010 rubles: – BP Visco 3000 barrel oil in your own canister, 640 rubles for 4 liters; – MANN filter – 170 rubles; – air filter – 200 rubles.

We tinker with the car ourselves and willingly - an excellent reason to take a break from pressing matters.

I agree, it’s still 400, I was wrong. And as for picking, to each his own. I don't get sick from picking at the hardware. I tinkered with the Lada a little, but with the current one I avoid it. I just feel like an idiot when I realize what I mean. I'm in a pose all day long over some node in the absence of special tools, albeit successfully, while I could have paid 1-2 rubles for it and left by car in an hour with my hands intact and in a good mood.

This is not a matter of boasting or arrogance: everyone should either do what he likes or get paid for it. I’ve just been sorting out part of a rocket’s jet engine, for example :)) and let those who are interested in it or those who have a financial interest in it do the car work.

You didn't understand me. A specific example. This summer I decided to fix the problem in the rear drum brakes myself. The story is long, but the point is that it was necessary to eliminate the crunching noise when braking, which the service center could not do, but I finally figured out the reason. The operation boiled down to “remove the pads, clean a couple of places, put everything back.” So, instead of going to the service center, pointing a finger and telling me what needs to be done, I decided to get into it myself. Exactly what it's about. I spent almost the entire daylight (this is all easy and simple in the book), slightly damaged the brake cylinder boot and cursed the Korean genius.

All this could be done in an hour and for 2000 rubles in the club service.

Well, is it necessary? I guess Saturday wasn't worth it.

Types of ignition systems

The first is the contact system used on the VAZ 21074 of the first releases. Its basis is a mechanical ignition distributor (distributor). Sparking occurs when the contact group is closed in the distributor housing, the conversion to the highest voltage is carried out using a coil, which is a step-up transformer. And only after the spark spreads with the distributor, it appears on the VAZ spark plugs. Such a system is obsolete, since the presence of contacts significantly reduces the service life due to their frequent burning.

Bosch is known for high quality products.

The non-contact ignition system, which was introduced into the VAZ 21074 at the end of the last century, when the carburetor was replaced, is considered more progressive, reliable and durable. The same distributor, only instead of a contact group, is a Hall sensor, which responds to the passage of a cylindrical iron plate with slots next to it.

The system is controlled by a switch that increases the signal coming from the Hall sensor and feeds it to a high voltage coil. The greatly enhanced spark enters the coil's ignition coil through a slide distributor; so if the electrodes break, replace the VAZ 2107 spark plug to the last one.

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Replacing spark plugs with your own hands - step-by-step instructions

Preparing to replace spark plugs

Before removing the coils (or wires) and the spark plug itself, it is necessary to thoroughly blow off the working surface so that the dust and sand that accumulate on it do not get inside the cylinder and damage the cylinder mirror and elements of the piston group. This must be done with a professional, powerful compressor.

Remove debris and dirt before replacing spark plugs

The compressor that many people carry in their car to inflate tires will not work. The air flow needs to be strong. The price of the issue is the health of the piston group.

If there is no compressor, but you need to unscrew the spark plugs, you can try the following scheme: unscrew the spark plug a few turns and clean the surfaces with a brush or brush. However, this method cannot be used on all cars. You can also use a vacuum cleaner. However, none of these methods guarantee clean cylinders.

Removing old spark plugs

After the preparation is completed, you can begin to remove the candles:

You will need a spark plug wrench of the appropriate size with a wrench and an extension.

The procedure is not complicated:

You need to find the spark plug with a key and remove it from the lock by pulling the tool towards you.
Unscrew the spark plug.
Repeat with the remaining parts.

It is not recommended to use electric or pneumatic tools when replacing spark plugs, since the head is delicate and it is better to control the efforts with your hands.

If you plan to leave the wells open even for a short time, for example, to clean and inspect unscrewed spark plugs, you must cover them with a rag to prevent dust from flying in there.

Installing new spark plugs

First of all, you need to carefully inspect all the new spark plugs one by one. There should be no chips on the ceramic insulator, the threads should be clean, good, and there should be no other externally visible damage.

Proper installation of the spark plug can only be done using a torque wrench. This is a wrench with a built-in dynamometer - a device for measuring force. If you do not hold the connection, this is fraught with overheating and loss of compression; vibrations to which the spark plug may be exposed during engine operation can destroy it, microcracks will appear on the insulator, and heat dissipation characteristics will be disrupted, which in general will lead to the spark plug not normally producing a spark and igniting the fuel-air mixture. If the load on the spark plug exceeds the recommended norm, the sealing ring will be overtightened, overheating will occur and there will be a possibility of destruction of the spark plug, which may simply break. It is also possible to strip the threads of the cylinder head, which will require an expensive and complex repair. Thus, tightening the candles is an extremely important point and doing it “by eye” is highly not recommended, even though this rule may be neglected even in some services.

All instructions about how hard it is necessary to twist the candles are usually given on their packaging. If there are no such instructions, in any case there should be information about where this information can be found. As a last resort, you can always consult with the seller of the store where these candles are purchased, since this information will probably be on the wholesale packaging. Sometimes on the packaging there are instructions on how to tighten a spark plug without a torque wrench: it says how many degrees you should turn a regular wrench.

Procedure:

Fit the candle by hand until it stops. Carefully ensure that the candle fits strictly along the thread.
Then you can proceed directly to tightening, using a torque wrench, on which you first need to set the required indicators. Tightening continues until a click is heard from the tool.
Repeat the manipulations with the remaining candles.
Taking this opportunity, you should inspect the wires and coils for damage, after which you can put them on the spark plugs.

After all the spark plugs have been tightened, you must immediately loosen the torque wrench. It cannot be stored in a tense state, as it begins to “lie.”

What spark plugs to install in a VAZ 2107

Car ignition system

Spark plug gap, mm.

NGK contact ignition system:

BP6ES code 7811 (standard)
BP6ES V-LINE No. 4 code 5637 (with a v-shaped cutout on the central electrode)
BPR6EIX code 6637 (with resistor and iridium center electrode)
BUR6ET V-LINE No. 1 code 2876 (with resistor, three-electrode, with a v-shaped cutout on the central electrode)

NGK contactless ignition system:

BPR6ES code 7822 (standard with resistor)
BPR6ES V-LINE No. 2 code 2268 (with resistor and v-shaped cutout on the central electrode)
BPR6EIX code 6637 (with resistor and iridium center electrode)
BUR6ET V-LINE No. 1 code 2876 (with resistor, three-electrode, with a v-shaped cutout on the central electrode)

NGK BPR6ES-11 code 4824 (standard with resistor)
NGK BPR6ES-11 V-LINE No. 13 code 5339 (with resistor and v-shaped cutout on the central electrode)
NGK BPR6EIX-11 code 3903 (with resistor and iridium central electrode)
NGK BUR6ET V-LINE No. 1 code 2876 (with resistor, three-electrode, with a v-shaped cutout on the central electrode)

When to change spark plugs in Lada (VAZ) 2107

And who buys iridium and why - ask those who buy

Maintenance on a Lada costs 1010 rubles: – BP Visco 3000 barrel oil in your own canister, 640 rubles for 4 liters; – MANN filter – 170 rubles; – air filter – 200 rubles.

We tinker with the car ourselves and willingly - an excellent reason to take a break from pressing matters.

All this could be done in an hour and for 2000 rubles in the club service.

Well, is it necessary? I guess Saturday wasn't worth it.

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.

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Which parts to choose?

When choosing spark plugs for a VAZ 2106 car, you must be guided by the numerical value indicated on the marking. It denotes the heat value of the element, which characterizes the candle’s ability to remove heat and self-clean from carbon deposits during operation. According to the Russian classification, elements are divided into the following groups:

If you install too “hot” or “cold” spark plugs on a VAZ 2106 car, the engine will not be able to function in normal mode with maximum efficiency. The letter indices on the marking indicate less important parameters, but they also need to be taken into account. For example, a product with the designation A17DV is suitable for engines with a carburetor and an ignition system with mechanical contacts, and A17DVRM is suitable for power units with an injector.

The trouble is that the classification of imported candles differs from Russian ones, and there is no single measurement system; each manufacturer has its own. Therefore, before you buy reliable products from the Japanese company NGK or another brand for the VAZ 2106, it is recommended to study the table.

Type of power and ignition system	According to Russian classification	NGK, Japan	Bosch, Germany	Beru, Germany	Brisk, Czech Republic
Carburetor, mechanical contacts	A17DV, A17DVM	BP6E	W7D	W7D	L15Y
Carburetor, electronic	A17DV-10, A17DVR	BP6E, BP6ES, BPR6E	W7D, WR7DC, WR7DP	14-7D, 14-7DU, 14R-7DU	L15Y,L15YC, LR15Y
Injector, electronic	A17DVRM	BPR6ES	WR7DC	14R7DU	LR15Y

Using the table, you can select elements from some foreign brands for classic Zhiguli models with different fuel supply methods and types of sparking systems.

What spark plugs to install in a VAZ 2107

Car ignition system

Spark plug gap, mm.

NGK contact ignition system:

BP6ES code 7811 (standard)
BP6ES V-LINE No. 4 code 5637 (with a v-shaped cutout on the central electrode)
BPR6EIX code 6637 (with resistor and iridium center electrode)
BUR6ET V-LINE No. 1 code 2876 (with resistor, three-electrode, with a v-shaped cutout on the central electrode)

NGK contactless ignition system:

BPR6ES code 7822 (standard with resistor)
BPR6ES V-LINE No. 2 code 2268 (with resistor and v-shaped cutout on the central electrode)
BPR6EIX code 6637 (with resistor and iridium center electrode)
BUR6ET V-LINE No. 1 code 2876 (with resistor, three-electrode, with a v-shaped cutout on the central electrode)

NGK BPR6ES-11 code 4824 (standard with resistor)
NGK BPR6ES-11 V-LINE No. 13 code 5339 (with resistor and v-shaped cutout on the central electrode)
NGK BPR6EIX-11 code 3903 (with resistor and iridium central electrode)
NGK BUR6ET V-LINE No. 1 code 2876 (with resistor, three-electrode, with a v-shaped cutout on the central electrode)

When to change spark plugs in Lada (VAZ) 2107

I decided to write an article about the choice of spark plugs for classic Zhiguli models. Since the choice on the market is very large, but there are not very many worthy ones.

Main characteristics of spark plugs for VAZ 2101, 2102, 2103, 2104, 2105, 2106,2107, 2121

1) Thread type of spark plugs: M 14/1.25 2) Thread length 19 mm 3) Heat rating 17 4) Gap between electrodes 0.5 - 0.7 mm 5) Thermal housing protrudes beyond the spark plug insulator

BOSCH (Germany) W7D

Inexpensive and fairly high-quality spark plugs made in Germany. There is no detonation, the engine runs smoothly and clearly. Average price 300 rub.

BRISK (Czech Republic) L15Y

The engine starts clearly and runs without noise or detonation. Suitable for use at any time of the year!

Average price 280 rub.

DENSO (Japan) W20EP

Very smooth ride of the car. Significant fuel savings. Durability and good Japanese quality.

Average price 200 rub.

NGK (Japan/France) BP6E

Great for cold weather, good spark. Smooth engine operation. Impeccable quality.

Average price 380 rub.

HOLA (Netherlands) S12

The best combination of price and quality. A budget option. More suitable for use in warm conditions.

Average price 180 rub.

CHAMPION (England) N10Y

They run great for 30,000 km. Excellent quality, practically no residue remains. Adequate fuel consumption.

Since spark plugs (SPS) are consumables, every car owner is forced to change them from time to time. The normal performance of the SZ contributes to the optimal operation of the power unit, which is especially important for domestic cars. From this material you will learn how to select a spark plug for a VAZ car and what to consider when purchasing.

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).

Selection options

To select good SZ, you must be guided by the following criteria:

The first parameter to consider when purchasing is the heat rating. It should be noted that this parameter is conditional and not universal, so it must be selected in accordance with the model of a particular motor. This number shows the pressure level in the internal combustion engine cylinder at which glow ignition occurs. The use of SZ with a higher heat number is allowed, but is not prohibited if it is lower.
Another parameter is the possibility of self-cleaning. Unfortunately, this parameter can only be accurately verified in practice, since all SZ manufacturers promise consumers a high level of self-cleaning. If this indicator is really high, then carbon deposits will not form on the SZ, which is especially important for their optimal operation.
When buying spark plugs from a VAZ, you also need to take into account their gap. Each manufacturer sets the appropriate gap for individual product lines. If we are talking about domestically produced cars, then in this case this gap on the VAZ spark plugs should be 0.5-0.7 mm.
Traditional SZ are equipped with two electrodes - one central and one side, but not so long ago global manufacturers began producing devices with 3 and 4 electrodes. These electrodes cannot produce multiple sparks - their purpose is to provide more consistent sparking. Accordingly, the use of such SZ contributes to more stable operation of the power unit due to improved ignition procedures.
Before purchasing SZ, carefully inspect them for mechanical damage. If you see that there are cracks on the device’s body, then it is better to refuse to purchase such SZ. Also, before installation, check that the gap is the correct size.
To diagnose purchased SZ, you can install them in a pressure chamber, of course, if you have such an opportunity, then adjust the pressure in it to about 10 kg/cm2, and the current should be connected with a value of 22 kV. As a result, a spark should begin to form. If the spark appears intermittently, this indicates that the SZ is not working, but if the sparking is continuous, then the devices can be purchased (the author of the video is Nail Poroshin).

Spark plug selection criteria

Spark plugs have a standard set of characteristics, which include materials, number of electrodes, heat rating, etc. These are the ones that are taken into account when choosing a spark plug model for a car:

manufacturing materials. Spark plugs are made from nickel, platinum and iridium. Nickel models are designed for a mileage of up to 50,000 km. The resource of platinum ones is 60,000 km. Iridium specimens are considered the most durable and last up to 100,000 km;
number of side electrodes. The service life of the spark plug directly depends on the number of electrodes. The more there are, the longer the spare part will last. Multi-electrode spark plugs are designed for high-quality gasoline and are not available for all brands of cars;
gap between electrodes. The gap determines the size of the spark and the voltage level it requires. Increasing this gap results in a longer spark. If this indicator is too high, it will not be easy to break through. The gap gradually increases with use, so it should be checked regularly;
heat number. The indicator is determined by the size of the heat removal section of the candle and the rate of its cooling. The heat rating divides candles into three categories - cold, medium and hot. Hot spark plugs are designed for driving in urban conditions. Cold spark plugs work well on high-level gasoline;
dimensions. The size of the spark plug is determined by the length of the thread. Depending on this parameter, models are divided into three categories: short, medium and long. For each car, the spark plug is selected individually - it should not be more or less than the values recommended by the manufacturer.

Video - How to choose the right spark plugs

TOP best manufacturers of spark plugs for VAZ

So which SZ for VAZ is better to choose?

Below is a list of the most popular device manufacturers:

ZAZS. VAZ vehicles are equipped with such SZ during production. The manufacturer recommends using ZAZS, citing the fact that these spark plugs are most optimal for domestic engines. However, many car enthusiasts do not trust this manufacturer and install SZ from other brands on their cars.
Beru. In particular, we are talking about the 14FR-7DU model. The main feature of such SZ is the use of a copper central electrode in the design, which has a nickel shell. Thanks to this, the SZ of this model is more resistant to corrosion and wear. The skirt is made in a conical shape, thanks to which the device quickly switches to self-cleaning mode. In addition, the spark power in these fire protection systems is quite high; accordingly, the combustible mixture will burn most efficiently.
Champion, namely the RC9YC model. If you believe the manufacturer, then such SZ have lower performance in terms of gasoline consumption. In addition, they are more stable, and their power when operating at higher engine speeds is higher.
NGK is one of the brands that supplies the highest quality products to the domestic market. The nickel model BCPR6ES-11 is currently considered one of the most affordable options. A power unit with such devices will operate more steadily. And when the driver presses the gas pedal, the engine can operate 4% more powerful than with traditional SZ. Separately, we should highlight the iridium spark plugs on the VAZ. If you decide to purchase iridium spark plugs at VAZ, you will be faced with a large assortment of models. They differ from each other both in cost and in characteristics. It should be noted that iridium spark plugs on VAZ have a longer service life. Depending on the model, iridium spark plugs on a VAZ can last up to 100 thousand kilometers or even more. Of course, such advantages also affect the cost of SZ as a whole. Iridium spark plugs on VAZ have an iridium electrode, which makes the spark even more powerful.
Denso Q20TT. Such devices have a thinner electrode, for the manufacture of which precious metals are not used. Accordingly, this has a positive effect on the price of SZ. As practice shows, when using such devices, the engine power will be higher, its dynamics will increase, and fuel consumption can be reduced. Of course, we are talking about a normally running engine.
Czech-made devices Brisk DR15YC are equipped with a copper core, as well as a longer electrode insulator, thanks to which the SZ can more quickly switch to self-cleaning mode. Accordingly, the use of these models is more relevant for vehicles that are used in urban environments. As for the replacement interval, in this case it largely depends on the quality of the fuel.
Bosch FR7DCU. Such SZ are equipped with a copper core mounted to a chromium-nickel shell. Accordingly, this enables the electrode to be more resistant to erosion or corrosion. Thanks to the use of nickel plating, the likelihood of thread sticking is minimized.
Finwhale F516. The body of this model is characterized by galvanic coating and is made of ductile steel. In addition, this model has good electrical insulation, as a result of which heat conductivity will be higher, which is ensured by the high content of aluminum oxide on the insulator.

Price issue

When to change spark plugs: main signs

Opinions about the service life of spark plugs vary among car enthusiasts. Some are ready to adhere to the most stringent requirements and change spark plugs at every maintenance, others believe that you can drive on spark plugs for more than 100 thousand km, the main thing is to clean and restore the gap in time.

To understand the specific timing of replacing spark plugs, you need to refer to the technical regulations of the car on which this operation must be performed. This is done due to the fact that depending on the make and year of manufacture of the car, the requirements vary.

The simplest and most error-free option would be to replace the spark plugs every 15 thousand km. This figure is a common requirement. Since replacing spark plugs is a fairly simple and inexpensive procedure, there is nothing wrong with replacing them earlier than required. But if you wait until the spark plug immediately fails, you can also end up with a breakdown of other elements (which will be discussed below).

The auto parts market offers a separate type of spark plugs with an iridium insulator, which, according to manufacturers, have a longer service life than conventional spark plugs. Manufacturers promise the performance of iridium spark plugs up to 100 thousand km. mileage

Spark plugs can certainly work longer than 15 thousand km. This is a common recommendation among automakers and spark plug manufacturers to help prevent spark plugs from failing while on the road. This situation entails a loss of power and interruptions in engine operation, which creates the likelihood of getting into an emergency situation.

In addition, there are recommendations for replacing spark plugs as needed, regardless of mileage. At the same time, the need to check the suitability of spark plugs every 10 thousand km is indicated.

During routine vehicle maintenance, it is important to pay attention to the condition of the spark plugs, not only to determine their performance, but also because the spark plugs are an indicator of the quality of the engine and ignition system. By the appearance of the spark plug you can determine one or another malfunction of the car.

In this case, it is important to understand which spark plugs are suitable for use. This can be done by checking the spark on specialized equipment

The performance and serviceability of spark plugs is checked only at elevated pressure. Since in real-life conditions the spark plug is working in the cylinder, the spark plug experiences enormous pressure. The presence of a spark at normal atmospheric pressure, even with a wide spread of electrodes, does not mean that everything is in order with the spark plugs.

In addition, the performance of the spark plug can be assessed by external inspection.

The working spark plug should not have chips, cracks or other even minor damage to the body and insulators. Otherwise, such spark plugs must be replaced immediately.

It is not permissible to use a candle that has a layer of carbon deposits on the central insulator, including if there is a black coating on only one side.

The most important factor is the size of the gaps between the central and side electrodes. For each car and for each type of spark plug, manufacturers have established a clearly defined distance that must be between the electrodes, which must be maintained for optimal operation of the part.

The presence of at least one of the listed qualities should prompt the car owner to either replace the spark plugs or repair them (cleaning, establishing the required gap).

The following signs in the behavior of his car may prompt a car enthusiast to check the condition of the spark plugs:

Reduced car power, inability to accelerate at high speeds.
Difficulty starting the engine.
Jerks in engine operation, uneven operation.
Increased fuel consumption.

Each of these signs will indicate a problem with the spark plugs.

Video “Checking the gap on new SZ”

A specialist in the video (author - Nail Poroshin) will tell you more about what a modern VAZ owner needs to know about diagnosing the gap on the SZ.

Spark plug type	Spark plug type
Contact	A17DVR	0,5-0,6
Contactless	A17DV-10	0,7-0,8
Injection engine	A17DVRM	1,0-1,1
Spark plug type
Contact	A17DVR	0,5-0,6
Contactless	A17DV-10	0,7-0,8
Injection engine	A17DVRM	1,0-1,1