Selection of NGK spark plugs for VAZ 2108, 2109, 21099

The most common type is gasoline cars, which require full maintenance. Usually a simple part like spark plugs doesn't raise many questions. However, the unit requires more attention than most motorists think. The stability of the engine and the service life of the ignition system depend on the correct choice.

In 2022, there are a large number of models and companies on the market that, in their opinion, produce the best spark plugs for VAZ and other car models. But it is not always the case.

Selection of NGK spark plugs for VAZ 2108, 2109, 21099

NGK spark plugs are currently one of the most common. They have mostly good reviews about their work on VAZ engines in recent years. There are standard NGK spark plugs, plugs with a V-shaped center electrode, plugs with a thin, high-strength iridium center electrode, plugs with a platinum center electrode, and plugs with multiple ground electrodes. Some types of NGK spark plugs are suitable for carburetor and injection engines of VAZ 2108, 2109, 21099 cars.

Selection of NGK spark plugs for carburetor and injection engines of VAZ 2108, 2109, 21099 cars

First, we will select NGK spark plugs for carburetor 8-valve engines of VAZ 2108, 2109, 21099 cars with a contactless ignition system.
These are the following models: VAZ 2108, 2109, 21099 with a 1.1 liter carburetor engine (53 hp);

VAZ 2108, 2109, 21099 with a 1.3 liter carburetor engine (63 hp);

VAZ 2108, 2109, 21099 with a 1.5 liter carburetor engine (72 hp).

Let's see what general requirements apply to spark plugs for the engines of these cars.

The gap between the spark plug electrodes is 0.7 – 0.8 mm

Length of the threaded part – 19 mm

Thermal cone with a central electrode protrudes beyond the spark plug insulator

Presence of noise suppression resistor

List of NGK spark plugs meeting these conditions:

BPR6ES, code 7822

Copper central electrode, one side electrode, noise suppression resistor, gap between electrodes 0.8 mm.

BPR6E V-LINE No. 2, code 2268

Copper V-shaped center electrode, one side electrode, noise suppression resistor, 0.8mm electrode gap.

BPR6EIX, code 6637

Iridium central electrode, one side electrode, noise suppression resistor, gap - 0.8 mm.

BUR6ET V-LINE No. 1, code 2876

Nickel center electrode with V-shaped cutout, three side electrodes, noise suppression resistor, gap - 0.8 mm.

Now we will select NGK spark plugs for the 8-valve injection engine of VAZ 2108, 2109, 21099 cars. This is a VAZ 2111 engine with a distributed injection system. First, let's again look at the general requirements for spark plugs for this engine.

The gap between the spark plug electrodes is 0.9 - 1.1 mm

Length of the threaded part – 19 mm

Thermal cone with a central electrode protrudes beyond the spark plug insulator

List of NGK spark plugs that meet these conditions:

BPR6ES-11 code 4824

Central copper electrode, one side electrode, noise suppression resistor, gap between electrodes 1.1 mm.

BPR6ES-11 V-LINE No. 13, code 5339

A central copper electrode with a V-shaped cutout, one side electrode, an interference suppression resistor, the gap between the electrodes is 1.1 mm.

BPR6EIX-11, code 3903

Iridium central electrode, one side electrode, noise suppression resistor, gap between electrodes - 1.1 mm.

Notes and additions

— Standard spark plugs for 8-valve carburetor engines of VAZ 2108, 2109, 21099 cars - A17DVR, A17DVRM, A17DVRM1, for the injection 8-valve engine 2111 - A17DVRM.

Source

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VAZ 2106, 2107, 2108 and 2109 cars are very similar to each other in their design and engines. However, they were produced with both an injector and a carburetor, so when choosing spark plugs you need to focus on the fuel system and ignition option (contact or non-contact). The manufacturer of original spark plugs for all of the above cars is the Russian company “E3”, Engels.

According to the rating of spark plugs for the VAZ 2106 on PartReview dated 05/07/20, owners prefer NGK products. Manufacturers BRISK, Denso and Finwhale also stand out.

Denso spark plugs for VAZ 2108, 2109, 21099 engines

Denso is a Japanese company that produces various components for cars of different brands. In particular, very good spark plugs for car engines. We will select spark plugs produced by Denso for the carburetor and injection engines of front-wheel drive VAZ 2108, 2109, 21099 cars.

General requirements for spark plugs for carburetor engines of VAZ 2108, 2109, 21099 cars (1.1, 1.3, 1.5 l engines) with a contactless ignition system

The gap between the spark plug electrodes is 0.7-0.8 mm

The length of the threaded part is 19 mm

Thermal cone with a central electrode protrudes beyond the spark plug insulator

Denso spark plugs meeting these conditions

W20EPR-U , index 3047 (D2)

Conventional single-electrode spark plug. Nickel central electrode. Interelectrode gap 0.8 mm. With noise suppression resistor. U-shaped notch on the electrode.

W20TT , index 4602(#4)

Single electrode spark plug. Interelectrode gap 0.8 mm. Nickel alloy central electrode. With noise suppression resistor. The manufacturer claims a longer service life of the spark plugs (30-40 thousand km) since it uses Twin Tip technology to improve spark formation - the central and side electrodes are reduced in diameter.

Denso iridium spark plugs with an interelectrode gap of 1.1 mm are also suitable for carburetor engines VAZ 2108, 2109, 21099.

IW20 , index 5306 (#4)

Single electrode spark plug. Iridium thin central electrode. Interelectrode gap 1.1 mm. Noise suppression resistor.

IW20TT , index 4709 (#4)

Single electrode spark plug. The central electrode is iridium, platinum (platinum needle). Interelectrode gap 1.0 mm. Twin Tip technology for improving spark generation has been applied. Noise suppression resistor.

General requirements for spark plugs for the injection 8-valve engine (2111) of VAZ 2108, 2109, 21099 cars

The gap between the spark plug electrodes is 1.0-1.1 mm

The length of the threaded part is 19 mm

Thermal cone with a central electrode protrudes beyond the spark plug insulator

Presence of noise suppression resistor

Denso spark plugs meeting these conditions

W20EPR-U11 , index 3049 (D13)

Single electrode spark plug. Nickel center electrode. Interelectrode gap 1.1 mm. Noise suppression resistor.

W20TT , index 4602(#4)

Single electrode spark plug. The interelectrode gap is 0.8 mm (despite the small gap, it is still recommended for the 2111 engine). Nickel alloy central electrode. With noise suppression resistor. The manufacturer claims a longer service life of the spark plugs (30-40 thousand km) since it uses Twin Tip technology to improve spark formation - the central and side electrodes are reduced in diameter.

IW20 , index 5306 (#4)

Single electrode spark plug. Iridium thin central electrode. Interelectrode gap 1.1 mm. Noise suppression resistor.

IW20TT , index 4709 (#4)

Single electrode spark plug. The central electrode is iridium, platinum (platinum needle). Interelectrode gap 1.0 mm. Twin Tip technology for improving spark generation has been applied. Noise suppression resistor.

Source

Types of ignition systems

The very first is the contact system, which was used on the VAZ 21074 of the first production. Its basis is a mechanical ignition distributor (distributor). A spark is formed when the contact group in the distributor body is closed; conversion to high voltage is carried out using a coil, which is a step-up transformer. And only after the spark is distributed by the distributor does it appear on the VAZ spark plugs. This system is obsolete, because the presence of contacts significantly reduces the service life due to their frequent burning.

Bosch is famous for its quality products

The non-contact ignition system is considered more progressive, which began to be used on the VAZ 21074 towards the end of the last century, when the carburetor was replaced by an injector, reliable and durable. The same distributor, only instead of a contact group there is a Hall sensor, which reacts to the passage of a cylindrical metal plate with slots near it.

The system is controlled using a switch, which amplifies the signal coming from the Hall sensor and supplies it to a high-voltage coil. From the coil, through a distributor with a slider, a much stronger spark is supplied to the spark plugs, so if the electrodes break down, it is necessary to replace the spark plug on the VAZ 2107 with a new one.

Checking and installing spark plug gaps in VAZ 2109 – 21099

Almost all spark plugs produced today have a factory-set gap between the electrodes. It is different for each manufacturer. It is also different for spark plugs for carburetor engines with contact and non-contact ignition systems, and for spark plugs for injection engines.

For example, the gaps between the electrodes of spark plugs for VAZ 2109 carburetor engines vary between 0.5-0.7 mm for a contact ignition system, 0.7-0.9 mm for a non-contact ignition system.

Moreover, it is recommended to make the gap smaller by 1 mm in winter, and larger by 1 mm in summer. In this way, improved engine starting and stability of its operation at different atmospheric temperatures are achieved.

It is believed that prolonged cranking of the engine with the starter at low ambient temperatures can discharge even a new battery so much that its voltage is not enough to form a spark if the gap between the electrodes is too large or normal. At the same time, increasing the gap creates additional load on the ignition coil.

For VAZ 2109 injection engines, the gap is in the range of 0.9-1.1 mm. There are no recommendations for changing the gap size for different seasons.

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

What you need to know about the marking of spark plugs and which ones to put on a VAZ-2107 For classic VAZ models with contact ignition

For models with contactless protection

How to choose high-voltage wires

A mistake 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.

Reasons for replacing elements

The spark plug in any car must function in difficult conditions, solving the following problems:

• promptly ignite the air-fuel mixture compressed in the cylinder;
• provide an even and powerful spark discharge on its contacts;
• sparking should not deteriorate under any engine operating mode.

For ignorant car enthusiasts, checking spark plugs comes down to a “spark” test. This gives rise to an erroneous statement: if, when connected to a source, a spark jumps between the contacts, then the element is in good working order.

But the conditions inside the combustion chamber differ from normal atmospheric ones, since there is high pressure (over 10 Bar), and instead of air there is fuel plus high temperature. Often, a spark plug that produces a reliable spark discharge in air, in the cylinder, works with misfires or does not spark at all.

The operability of the elements can only be determined on a stand with high voltage applied and pressure created in the chamber. Such a check is not available to most ordinary motorists; the only way out is to promptly replace the VAZ 2106 spark plugs by purchasing high-quality products from well-known manufacturers. These include famous brands NGK, Bosch, Beru and Brisk.

Russian spark plugs of the A17 series cannot boast of a long service life and fail after 15-20 thousand kilometers, as evidenced by the following signs:

1. The engine "troits". Moreover, sometimes it is impossible to understand which cylinder is failing, since all 4 spark plugs skip ignition cycles.
2. The car performs poorly and is unstable until it warms up.
3. With high fuel consumption, a drop in power is observed.
4. A particularly bad case is when the oil pressure light comes on. This is the result of long-term driving on bad spark plugs, when the fuel that does not burn in the cylinders flows into the crankcase and dilutes the oil, causing its pressure to drop.

Every car enthusiast should remember that if the power unit malfunctions, the first step is to unscrew the spark plugs and visually check their condition.

The color and thickness of carbon deposits on the contacts can tell a lot to an understanding motorist:

• black carbon deposits on the contacts indicate that the fuel in the chamber does not burn completely, perhaps the spark plug has failed;
• a white coating on the electrodes indicates a poor air-fuel mixture, the spark plug is working;
• red carbon deposits indicate that the fuel contains harmful additives; the spark plug is most likely in good working order;
• thick “fluffy” carbon deposits are the result of combustion of oil entering the chamber through the seals or piston group.

Checking the gap between the spark plug electrodes

When installing new spark plugs on an engine or checking old ones, it is necessary to measure the gap between their electrodes. Old spark plugs should be cleaned of carbon deposits. The check is carried out with a round probe of the required diameter.

When checking and replacing spark plugs, be careful - if the engine is hot, you can get burned.

Measuring with a flat probe will be inaccurate, since there is almost always a small indentation on the side electrode of the spark plug due to metal transfer to the central electrode. This is especially true for candles that have already worked for some time.

What are the dangers of choosing the wrong candles?

There is a wide range of spark plugs on the automotive spare parts market, which causes some inconvenience for car owners when selecting the appropriate model. The main difficulties are related to the fact that each engine is designed for a specific modification of spark plugs. When installing incompatible options, the following problems may occur:

Other types of malfunctions that negatively affect the operating comfort of the vehicle cannot be excluded.

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.

How do candles work?

To understand what is happening and why, we need to understand the nature of the phenomenon occurring, and the roots of the phenomenon are hidden deep under the hood:

• The chain reaction that leads to the VAZ 21093 i flooding the spark plugs begins when you just turn the key in the ignition
• When a combustible fuel-air mixture is supplied to the combustion chamber, which consists of a mixture of gasoline and air that entered this chamber through the intake valves. These valves were brought into operation by the starter. Everything is clear here for now
• The spark plug at this point in time provides an ignition spark, which “comes” through the high-voltage wires from the ignition coil
• Then the mixture of fuel and air ignites from a spark, and a small micro-explosion occurs, after which the engine starts, valves and pistons, and all other mechanisms begin to move

Scheme for detecting problems in the ignition system based on the state of the spark plugs

So that you can independently identify faults in the ignition system, the photo above shows a table. So:

• As you understand, the most important elements in this chain of interactions are the spark and the combustible mixture of fuel and air
• Therefore, if there is no spark for some reason, the motor simply does not work.
• Therefore, after a few minutes of rotating the engine with the starter, the spark plug is filled with unburnt fuel, causing it to get wet.
• It turns out that the VAZ 21093 floods the spark plugs and there will be no normal spark, and without a spark there is no ignition
• You should be aware that in damp autumn or cold winter weather, ignition of the combustible mixture of air and fuel may not occur, even with fully working spark plugs
• Simply, when the temperature of the surrounding atmosphere (environment) drops below 15 degrees, the mixture of fuel and air is cooled to such a limit that ignition problems begin to arise
• In addition, problems arise with the spark; the spark plug does not work in normal mode, but in high load mode
• If the engine does not start immediately, the owner stubbornly continues to rotate the engine with the starter
• Then the VAZ 21093 gets flooded with spark plugs (like any other car), and they stop functioning completely

Notes and additions

— For spark plugs for carburetor engines with a contact ignition system for VAZ 2101, 2102, 2103, 2104, 2105, 2106, 2107 cars, the recommended gap between the electrodes of the spark plugs is 0.5-0.7 mm, for VAZ 2108, 2109, 21099, 2105, 2107 with a contactless ignition system 0.7-0.9 mm.

For injection engines of VAZ 2107, 2108, 2109, 21099 cars 1.0-1.1 mm.

An incorrectly set gap between the electrodes of the spark plugs leads to problems with starting the engine, unstable engine idle speed, jerking when starting and driving, “dips,” loss of power and throttle response, and an increase in the engine’s fuel appetite. Normal engine operation can only be ensured by a spark plug with a gap specific for a given engine type.

Regularly check the reliability of the connections of the high-voltage wires with the spark plugs, coil and ignition distributor.

With a smaller gap, the spark will be short and weak, combustion of the fuel mixture worsens, with a large gap, the voltage required to break through the air gap between the electrodes of the spark plug increases. In this case, there may be no spark at all.

There is no need to set the gap on multi-electrode spark plugs.

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.

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.

Checking and replacing spark plugs VAZ-2109

You will need: a spark plug wrench, a round dipstick.

Replacement frequency: After 30,000 km.

Before starting work:

Disconnect the wire from the “─” terminal of the battery.

Spark plug type: A17DVR, A17DVRM, FE65PR, FE65CPR. Until 1988, spark plugs of types A17DV and FE65P were installed on the VAZ-2109.

We recommend replacing spark plugs every 30,000 km, even if they are still in working order: old spark plugs can increase fuel consumption.

Troubleshooting

Systematic checking of spark plugs with your own hands allows you to get rid of a lot of problems and financial expenses, as well as give the car the opportunity to demonstrate its full potential on the track:

• It is important to detect and replace a faulty spark plug as quickly as possible.
• Based on the carbon deposits formed on it, you can easily diagnose the operation of the engine and ignition system components
• A typical cause of spark plug malfunction is incorrect selection when replacing
• Despite the fact that all car manufacturers literally shout: “Use only spark plugs recommended for this vehicle, or acceptable analogues”
• However, sometimes our own laziness gets in the way, and sometimes we don’t have the opportunity to purchase the right candle
• Therefore, we often establish what will turn up on a car
• We often justify such actions by saying that we don’t understand anything about replacing spark plugs.
• And you just need to choose and buy new ones in the image and likeness of the previous ones, and with the cooled engine turned off, unscrew the spark plugs using a special key, and then screw in new ones
• The main thing to remember is that new spark plugs must perfectly match all the geometric and thermal characteristics of the previous spark plugs installed by the factory
• Otherwise there will be problems
• If the heat value is insufficient (the so-called degree of thermal conductivity), the owner will face immediate problems with the operation of the engine and the entire ignition system
• And if the spark plug has a mismatch in the geometric dimensions of the threaded part (shorter than it was or longer), then it will either become clogged with carbon deposits or filled with gasoline and naturally work poorly
• Advice to those who do not like to tinker with equipment often, you just need to follow one simple rule to avoid problems with the engine:
• It is only necessary to change the spark plugs every 30 thousand kilometers.
• Check and clean every 5 thousand kilometers
• It turns out that to prevent faulty spark plugs from causing problems, you need to remove carbon deposits from the spark plugs 10 times (within two years with constant driving).

The best candles for Niva

Based on reviews from forums, it has been repeatedly revealed that Nivovody gives their preference to NGK candles. These spark plugs are excellent for the Niva engine and can withstand high temperature loads. NGK spark plugs make it easier to start the engine in cold weather and even reduce fuel consumption due to their structure. The closest to standard spark plugs and suitable in design to the Niva engine will be NGK No. 11 spark plugs.

These spark plugs easily overcome the 30,000 km barrier without any damage.

The influence of the correct clearance on engine performance

The gap is a really important parameter. It can either be big or too small.

Small gap

If small values ​​are set between the electrodes, then misfires will occur in the ignition system. The thing is that the spark that forms between the electrodes, which are as close to each other as possible, is not enough to ignite the fuel mixture. The spark, although strong, is not sufficient. This is why many cars will really jerk when driving and not develop enough speed. The carburetors may have flooded spark plugs, which will only cause problems – it will generally cause problems. The gap needs to be increased!

How much is a small gap? If we talk about size, it is approximately from 0.1 to 0.4 mm. We definitely check the candles after purchase, I’ll give practical recommendations below, but for now let’s talk about long distances.

Big gap

You know, many manufacturers set the normal distance between the electrodes in advance. But over time, it can increase on its own.

It's all about spark plug wear, which manifests itself with high mileage - this is natural. After all, the electrodes are made of metal, which, under the influence of temperature and constant electrical discharges, begins to slowly burn out. Both the upper one, which resembles the letter “G”, and the lower one suffer. The top one becomes thin, instead of a rectangular shape, it begins to be rounded, because the sides burn out. The bottom one just sags down.

Due to this distance, the spark that passes between the contacts weakens. And significantly! It may also not be enough to ignite the fuel.

Often, because of this, the insulator of the lower contact is pierced; the whole point is that the spark tries to find the shortest path between the electrodes.

In winter, there is a high probability that the car simply will not start.

Another important aspect is that deposits in the form of soot may more often appear on distant electrodes; the spark “suffers” from the long distance, and so does deposits! It may not pass at all. Therefore, it is important after a certain mileage, with our fuel it can be already 15,000 km, to unscrew the spark plugs if necessary, change them, or clean them.

Large distance - from 1.3 mm and above.

BRISK Classic L15Y

A characteristic feature of the Classic L15Y model is the ability to operate at reduced secondary voltage energy, which is suitable for older VAZ cars. A slightly lower heat rating and a small gap allow you to confidently start the engine at sub-zero temperatures; the spark plug warms up quickly and is not prone to sparking and carbon deposits.

However, because of this, the products may fail under loads and high temperatures, but for low-powered classic VAZ engines this will not be a discouraging factor. The service life is average in the class of budget candles based on copper and nickel.

The cost in the store is about 80 rubles per piece.

Source

Niva's original spark plugs

The Niva is supplied from the factory with domestic spark plugs from the Engel plant, which specializes in the production of automotive spark plugs. The plant installs AU17DVRM brand spark plugs; these plugs have proven themselves well and meet all quality standards and service life.

A large number of analogues of these spark plugs have appeared on the market, which are no worse than factory ones, and sometimes even better. Analogues of candles can be both imported and domestic.

Below is a table of spark plugs suitable for a Niva car from well-known brands such as DENSO, BOSCH and Brisk.

DENSO 3043 W20EP-U

DENSO 3043 W20EP-U

The best candles for this application took first place in the ranking. Experienced car service workers always recommend Denso products, knowing that the client will be satisfied. There will be no complaints about the candles; the products guarantee their operation regardless of the mode - idle or load.

There are some downsides - the U-Groove technology does not prevent you from driving on a cold engine at low speeds, soot formation is possible, the spark plugs are a little colder in heat rating than inexperienced drivers would like.

The gap on the product is 0.8 mm, therefore, it is not suitable for a carburetor engine.

The cost, on average, is 130 rubles per unit.

Advantages and disadvantages

• Excellent quality, which is why spark plugs are installed on many cars from the factory.
• Copper core ensures reliability.
• Increased flame spread thanks to the U-shaped groove of the side electrode.
• Soot quickly forms on candles.

Modern technologies

What I want to say in conclusion, many will think “come on,” why should I bother with some distance between the electrodes! Guys, very wrong thoughts.

Firstly, you can save on fuel, studies show up to 5 – 7%

Secondly, smooth engine operation is the key to driving safety.

Third, the correct gap between the spark plugs increases their service life; there is no chance that the insulator will break through (with an increased distance).

I would like to note that some companies, on the contrary, increase the number of contacts (electrodes), strengthen the coils and the ignition system, all so that the mixture is ignited better.

There are also more modern technologies now, which I think will soon replace them - such as plasma candles.

They have no electrodes at all, and the fuel is ignited by a beam of plasma that is generated by electricity. As they write, the production is now undergoing tests and they say that the combustion efficiency of the fuel mixture is increasing, which means a little more power, a little more economy and environmental friendliness of the engine.

And that’s all for me, read our AUTOBLOG, it will be interesting.

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