Spark plug injector for VAZ 2107 – Which spark plugs for the VAZ 2107 injector are better

Every gasoline engine vehicle requires spark plugs to operate. Plugs, along with fuel, ensure the reliability and uniformity of operation of the entire power plant; if the spark plugs reach their service life, various interruptions in the operation of the engine may occur, including stopping.

This article talks about the spark plugs used in the VAZ 2114 car, namely about their timing and replacement methods, gaps and brands that are perfect for the engine of the “fourteenth” Lada model.

After studying this article you will find a lot of interesting and useful information about choosing spark plugs for your car.

Adjusting the ignition of the VAZ 2107

Acceleration dynamics, fuel consumption, trouble-free engine starting and exhaust toxicity of carburetor VAZ 2107 directly depend on correctly installed ignition. If the ignition system (IZ) of newer injection models does not require special adjustments, then cars with an older contact system require periodic adjustment.

In what cases is ignition adjustment required?

Over time, the factory ignition settings get lost or no longer correspond to the operating conditions of the vehicle. Thus, the need to adjust the SZ arises when using low-quality fuel or fuel with a different octane number. To assess the feasibility of this procedure, the ignition timing is determined. This is done as follows.

1. We accelerate the car to 40 km/h.
2. We sharply press the accelerator pedal and listen to the sound of the engine.
3. If noise appears and disappears when the speed increases to 60 km/h, then there is no need to adjust the SZ.
4. If the noise and detonation do not disappear as the speed increases, then the ignition is early and requires adjustment.

If the ignition timing is set incorrectly, fuel consumption will increase and engine power will decrease. In addition, a number of other problems will arise - an incorrectly installed ignition will reduce the service life of the power unit.

If a spark forms on the spark plug earlier than expected, the expanding gases will begin to counteract the piston rising to the top position. In this case, they talk about early ignition. Due to too early ignition, the rising piston will expend more effort to compress the resulting gases. This will lead to an increase in load not only on the crank mechanism, but also on the cylinder-piston group. If a spark appears after the piston passes the top dead center, then the energy generated from the combustion of the mixture enters the exhaust without performing any useful work. In this situation they say that the ignition is late.

The ignition system consists of the following elements: 1 - spark plugs; 2 — ignition distributor; 3 - capacitor; 4 — breaker cam; 5 - ignition coil; 6 — mounting block; 7 - ignition relay; 8 — ignition switch; A - to terminal “30” of the generator

Required Tools

To adjust the ignition of the VAZ 2107 you will need:

• key to 13;
• screwdriver;
• spark plug key;
• special key for crankshaft;
• vol (12V lamp).

Signs of faulty spark plugs

Signs of faulty spark plugs:

• Reduced power of the power unit and increased fuel consumption;
• Wave-like acceleration when sharply pressing the gas pedal;
• Stopping the power unit at high speeds;
• Prolonged cranking of the starter when starting the power unit;
• Triple.

Some symptoms may appear under special operating conditions. For example, when warming up the engine at sub-zero temperatures. However, this still indicates that the ignition element is faulty.

How to measure the spark plug gap in a VAZ 2107 car

The spark plug gap in a VAZ 2107 can be measured with a special probe. It should pass between the spark plug electrodes with barely perceptible resistance. If necessary, it must be adjusted down or up. Although, by and large, candles are relatively inexpensive and it’s easier to carry an additional set of candles with you so that, if anything happens, they can replace the previously installed ones.

A lot depends on the correct spark plug gap. If the gap is larger, fuel consumption will increase. If it is less, the engine will start to jerk or refuse to work at all. As mentioned above, the gap depends on the engine power supply system. For example, in a VAZ 2107 and with a carburetor engine, the spark plug gap with a contact ignition system is 0.5-0.6 mm. If the system is non-contact, then the gap is larger and is 0.7 -0.8 mm. If an injector is installed on the seven, then the gap is already 1 - 1.3 mm.

In general, injection engines always have a larger spark plug gap. Cars with injectors have more powerful coils and better design of high-voltage wires. They maintain a gap of 1 mm. If, for example, you put spark plugs from a carburetor V8 on a Kalina, with a gap of 0.7 -0.8 mm, it will run without problems, although the performance characteristics will deteriorate. But if you put spark plugs from Kalina with a gap of 1.1 on the same “eight”, then most likely it won’t run.

Before you go to the store to buy a spark plug, read the instructions for your car. It usually indicates what type of candle, with what marking, should be used. It is better to buy spark plugs from well-known manufacturers such as Bosch, NGK, Denso, Finwhale, Brisk and others. In most cases, you will thereby protect yourself from marriage.

And don’t forget that spark plugs on a car cannot last forever and they need to be changed periodically. The frequency of replacement is also written in the instructions. Usually this is from 15 to 30 thousand km.

Spark plugs for VAZ 2106, 2107, 2108, 2109

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.

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.

Best premium spark plugs DENSO 4712 IXEH22TT

• with iridium soldering;
• mileage - up to 120 thousand km;
• increase engine power and service life;
• save fuel.

Reliable spark plugs for cars with a central electrode made of iridium alloy. The latter is ultra-thin, its cross-section is 0.4 mm. The service life of the product is 120 thousand kilometers. The design provides significant fuel savings and more complete combustion of fuel. The thread is M12, its length is 26.5 mm. A 14 mm wrench is used. Heat number – 22, refers to cold ones, gap – 1 mm.

The part is intended for use on Japanese (Subaru, Mazda, Toyota, Infiniti, Lexus, Nissan) and European (Mercedes-Benz, Renault) cars. They are also installed on VAZ. In particular, you can use these spark plugs on Grant 8 valves with an injector. But this is not always justified - in order for the model to reach its service life, you need to use high-quality fuel.

According to this parameter, Russian gasoline does not meet all the requirements. As a result, DENSO 4712 IXEH22TT will last not 120 thousand km, but 50–60 thousand km. At the same time, the cost of one piece is 710–870 rubles - which is why it makes sense to use them only on expensive cars with a mileage of at least 5,000 km per year and using only the best gasoline.

Reviews

Users like it for its long service life, increased efficiency, better spark formation, increased service life and engine power. The only drawback is the increased cost.

Pros:

• service life – up to 120,000 km;
• powerful spark;
• efficient combustion of the fuel mixture;
• less stress;
• increasing engine life and power;
• environmentally friendly.

Minuses:

Gap in spark plugs VAZ 2107

Did you know that the size of the gap between the side and central electrodes of the spark plugs affects many parameters of the car engine? Today we will tell you how to correctly adjust the spark plug gap on a VAZ 2107 with your own hands.

1.

Firstly, if the spark plug gap is set incorrectly, then the VAZ 2107 will not start as well as with optimal parameters.

2.

Secondly, the dynamic characteristics will become much worse, since the mixture will not ignite correctly and will not all burn out.

3.

And the consequence of the second point is an increase in fuel consumption, which will affect not only engine parameters but also the wallet of VAZ 2107 owners.

We recommend that you read the instructions on how to replace the valve cover gasket on a VAZ 2107 to eliminate oil leaks. This problem is very pressing in almost every car, and the owners don’t even pay attention to it.

What gap should there be on the VAZ 2107 spark plugs?

Due to the fact that “classic” models use both contact and non-contact ignition systems, the gap is set in accordance with the installed spark generation system.

— If you have a distributor with contacts installed, then the gap between the electrodes should be within 05.-0.6 mm.

— In the case of installed electronic ignition, the spark plug gap will be 0.7 - 0.8 mm.

How to set the gap between the spark plug electrodes on a VAZ 2107?

In order to adjust the gap, we need a spark plug wrench or head, as well as a set of feeler gauges with plates of the required thickness. I bought a model from Jonnesway in an online store for 150 rubles. This is what he looks like.

First of all, we unscrew all the spark plugs from the engine cylinder head. (instructions for replacing spark plugs on a VAZ 2107)

Then we select the required thickness of the probe for your ignition system and insert it between the side and central electrodes of the spark plug. The probe should fit tightly, not with much effort.

We carry out a similar operation with the remaining candles. We screw everything into place and are satisfied with the excellent operation of the engine.

Types of spark plugs: iridium and regular

The first iridium spark plugs for cars were produced by Denso. Today they claim that such parts, unlike conventional ones, have a longer service life. We installed such parts on the Priora, but did not notice the difference - perhaps this is just a marketing ploy. We don’t think that the Priora is anything special and there will be a noticeable difference on other cars. But still in terms of technology: durability is due to the gas-tight insulation of the central electrode, aluminum oxide insulators, reduced loss of electric current, a high degree of insulation, and a large volume of the ignition zone.

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Denso even produces special models for AvtoVAZ. The electrodes are coated with a lubricant mixture, which increases their gas impermeability, while the temperature in the ignition unit remains optimal - premature or late ignition is excluded. The side electrode is designed in such a way that it allows ignition to be optimized; in this case, even a lean mixture will be ignited.

You can install iridium spark plugs on the Lada Priora, the advantage of which is clear - they need to be changed much less often. But the service life of these elements will be significantly lower than that declared by the manufacturer. The fault lies not in the malfunction of the car - the quality of gasoline leaves much to be desired.

As mentioned earlier, iridium spark plugs can even light a lean mixture. When they work with a contaminated mixture (and the risk of running into unscrupulous filling remains high), they suffer even more. This is comparable to the work of the lungs of a person who lives in a non-ecological area: not only does fumes settle everywhere, the wear and tear of the “organs” accelerates.

Valve replacement of ignition elements for Lada Priora 16 valves is real. Manufacturers producing analogues for this VAZ car produce similar copies from iridium. But don’t rush to rejoice: even if you are promised that the spark plugs will last about one hundred thousand kilometers, on Russian roads this is unlikely to be true.

However, take care to ensure that the cylinder head gasket is always completely sealed against leaking oil. If oil gets on your iridium spark plugs, your expensive purchase will be rendered useless.

We are in contact: Ask a question - get an answer! Article rating: ( 4 votes, average: 3.75 out of 5) Loading

How to check spark plugs in a VAZ 2107 - step-by-step instructions

Attention: When performing the following operation, do not pull on the high-voltage wire. Force should only be applied to the tip of the high-voltage wire.

1. Remove the tip of the high-voltage wire from the spark plug.
2. We clean the dirt from the cylinder head and blow it with compressed air around the spark plug.
3. Using a 21mm spark plug wrench or a deep socket wrench, remove the spark plug from the threaded hole in the cylinder head.
4. Visually assess the condition of the spark plug.
5. For a working spark plug, when the engine is adjusted on a VAZ 2107 car, carbon deposits on the spark plug insulator should be from gray-yellow to gray-brown. If carbon deposits on the spark plug are black, the spark plug may be faulty or the engine adjustments may be incorrect. If the spark plug insulator is cracked or damaged, the spark plug must be replaced.
6. Using a round feeler gauge, check the gap between the electrodes at the spark plug. If the spark plug gap does not meet the standard, set the spark plug gap according to the table. 13.3, bending or bending the side electrode.
7. We install a spark plug in the engine of a VAZ 2107 car, wrapping it by hand, and then tighten it with a wrench to a torque of 3-4 kgf-m.
8. Similarly, we replace the spark plugs of other cylinders on a VAZ 2107 car.

Caution: Over-tightening the spark plug may damage the cylinder head bore threads.

When do you need to change spark plugs?

The replacement interval of 30 thousand km is very arbitrary. The AvtoVAZ company equips Priora engines with domestically produced single-electrode spark plugs marked A17DVRM for a 16-valve unit and AU17DVRM for an 8-valve unit. Practice shows that even on a new car, these spark plugs often fail long before the end of the service interval, causing unstable engine operation and increased fuel consumption. For this reason, many car enthusiasts prefer imported products.

Fault diagnosis

The best way to determine performance is to test the spark plug under pressure. The essence of this diagnostic method is to check sparking on the electrodes under conditions close to operating conditions. To do this, a candle is screwed into a special chamber equipped with an inspection window, and a discharge is passed through it, while air is pumped into the chamber with a compressor or manually.

At a certain moment, the discharge on the electrodes will begin to fade, and then completely disappear. Record the pressure gauge readings at this moment and compare them with the pressure in the cylinder, which was previously measured with a compression gauge. Plus 2 atm should be added to the compression meter readings. since the starter speed is much less than the engine operating speed. If the pressure in the cylinder is higher than the spark attenuation pressure at the electrode, the spark plug should be changed, because in operating mode it does not ensure complete combustion of fuel, and its excess begins to enter the engine oil sump.

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The consequences of driving a Lada Priora for a long time with faulty spark plugs can be disastrous, because, in addition to loss of power, some of the unburned fuel dilutes the engine oil, which harms engine parts. Then, in the form of vapors through the crankcase ventilation system, it again enters the cylinders, supersaturates the combustible mixture, which again does not completely burn on faulty spark plugs and ends up in the oil.

Therefore, if unstable operation, jerking, or failure occurs, you should immediately unscrew and inspect the spark plugs. Thick black deposits on the electrodes plus black exhaust from the pipe when the engine is running indicate an over-enrichment of the combustible mixture or an unsatisfactory condition of the spark plug itself.

If the coating on the electrodes is white and fluffy, and bluish smoke comes out of the exhaust pipe, then this is a problem with engine oil getting into the cylinders, so the oil caps or piston rings should be changed. All these additional loads on the spark plugs have a negative impact on them, and in any case they need to be checked for functionality and, if necessary, replaced ahead of schedule.

Spark plug

Plugs are used to ignite the fuel-air mixture in the engine cylinders when high voltage is supplied from the ignition coil. The main elements of any spark plug are a metal body, a ceramic insulator, electrodes and a contact rod.

Spark plugs are necessary to generate a spark and ignite the fuel-air mixture in the engine cylinders

Checking spark plugs for VAZ 2107

There are many ways to check spark plugs. The most popular are the following algorithms.

1. With the engine running, remove the high-voltage wires one by one and listen to the operation of the engine. If after disconnecting the wire no changes occur, then the corresponding spark plug is faulty. This does not mean that it necessarily needs to be changed. In some cases, you can get by with cleaning it.
2. The spark plug is unscrewed and a high-voltage wire is put on it. The spark plug body is leaned against a mass (for example, a valve cover) and the starter is cranked. If the part is working properly, the spark will be clear and bright.
3. Sometimes spark plugs are checked with a special tool - a gun. The spark plug is inserted into a special hole and checked for the presence of a spark. If there is no spark, the spark plug is faulty.

   
   You can check the serviceability of the spark plugs using a special tool - a gun

4. Candles can be checked with a homemade device made from a piezo lighter. The wire from the piezo module is extended and attached to the tip of the candle. The module is pressed against the spark plug body and the button is pressed. If there is no spark, replace the spark plug with a new one.

Video: checking spark plugs

Selection of spark plugs for VAZ 2107

Various models of spark plugs are installed on VAZ 2107 carburetor and injection engines. In addition, the parameters of the spark plugs depend on the type of ignition system.

The choice of spark plugs for the VAZ 2107 is determined by both the ignition system and the engine type

Auto stores offer many types of spark plugs for the VAZ 2107, differing in technical characteristics, quality, manufacturer and price.

Table: characteristics of spark plugs depending on the type of VAZ 2107 engine

You can install spark plugs from various manufacturers on VAZ cars.

Table: manufacturers of spark plugs for VAZ 2107

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.

How to check and how to set it

The process is not as complicated as it seems at first glance. To begin with, we simply unscrew the spark plugs, then look for damage; if there is none, then you can first clean it, then check the gap.

Of course, the gap can be measured with conventional measuring instruments, just a ruler. However, it is very difficult to determine 0.5 or 0.7 mm by sight! Therefore, now in stores you can buy so-called sets of “feelers” or special keys for checking the gap.

The probes are similar to metal curved letters “G”, with different sizes; we simply place them between the electrodes and determine the gap with an accuracy of 97%. If it is larger, for example on an injector than 1.1 mm, then the contacts are brought closer to each other, you can simply tap with the handle of a screwdriver. If it’s too close, then we move them apart from each other, again checking with a probe.

Watch my video about the gap.

Normal clearance size

The permissible limits of the interelectrode distance are from 0.6 to 1.2 mm. A more precise value is selected depending on the type of engine, power supply and ignition system:

• old-type carburetor engines with a low compression ratio and a mechanical spark generation system - 0.6–0.7 mm;
• the same engines equipped with non-contact electronic ignition – 0.8–0.9 mm;
• in turbocharged and naturally aspirated power units with fuel supplied by injection (injector), the gap on the spark plugs should be from 1 to 1.2 mm.

Advice. The best way to correctly determine the interelectrode clearance for a particular vehicle is to carefully study the operating instructions. In the vast majority of cases, this value is indicated among other setting parameters.

Since the owners of many vehicles equipped with gasoline engines switch to liquefied gas, the size of the spark plug gap requires adjustment. For high-quality combustion of a mixture of propane and air, it is recommended to increase the ignition intensity by increasing the clearance by 0.1 mm from the rated value. The load on the high-voltage coil will increase slightly, and the gas will burn better.

For example, the spark plug electrodes of a carburetor engine with electronic ignition must be bent to 0.9 mm, if the operating instructions indicate the figure 0.8. Do not listen to bad advice and do not make the gap too large, because automobile gas installations of all generations start on gasoline, and then automatically switch to supplying a propane-butane mixture from a cylinder. In addition, you will still have to use gasoline fuel to get to the gas station when the gas in the tank runs out.

Correct gap on spark plugs VAZ 2107 carburetor

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.

Product added to bookmarks!

APPLICABILITY: VAZ 2104, 2105, 2106, 2107, VAZ 2108, 2109, 21099, VAZ 2110, 2111, 2112, VAZ 2113, 2114, 2115, VAZ 1117, 1118, 1119 (LADA-Kal ina), VAZ 2170, 2171, 2172 (LADA-Priora), VAZ 2190, 2191 (LADA-Granta), VAZ 2192, 2194 (LADA-Kalina 2), VAZ 21214, 21313 (Niva), VAZ 2123 (Niva-Chevrolet, Chevrolet NIVA) with 8V injection engine

The V-Line spark plugs have advantages that apply to the entire program.

From a technological point of view, this principle is brilliantly simple - but very effective:

A V-shaped notch is made in the central electrode of the V-line spark plugs. As a result, the ignition spark jumps to the outer edge of the central electrode. There is more fuel in this place than between the electrodes. And one more thing: the required ignition voltage is reduced. This way, the reliability of ignition increases! Especially in modern engines, which use a very lean fuel mixture to reduce emissions of harmful substances. NGK's design now guarantees completely reliable ignition of the mixture.

Reliable ignition – a higher degree of environmental protection.

The risk of misfires is reduced to a minimum thanks to the V-Line design. This makes it possible to avoid such negative consequences of misfires as the release of harmful substances.

Reliable ignition: higher degree of protection for the catalytic converter.

The importance of ignition reliability is demonstrated by the catalytic converter: its service life and efficiency are often limited by unnoticed misfires. V-Line spark plugs provide effective protection for the catalytic converter.

Safety for the driver: the quality of the supplier of device products.

NGK spark plugs are quality products. Confirmation: they are used worldwide by high-volume engine and car manufacturers such as Alfa Romeo, Audi, BMW, Honda, Mazda, Mitsubishi, Renault, Saab, Toyota, VW, etc.

Carburetor damage and spark plug color for VAZ 2107

Every car owner knows that an internal combustion engine uses spark plugs. The principle of their operation is quite simple and intuitive, but still, many problems can arise. The service life of the spark plugs is very high, everything depends on whether the carburetor or injector supplies fuel. It must be emphasized that replacing the spark plug on a VAZ 2107 may not lead to the expected result, because of the state of maintenance of the engine and other systems.

For the VAZ 21074 carburetor, only those spark plug models are suitable that are suitable for this type of injection. If the injector is installed in a car, the requirements will be slightly different. The type of ignition system is also important in determining spark plug performance. In addition, the color of the electrode can be diagnosed with a lot of problems. To answer the question why dark or red candles, experience and logic will help.

Read

Velvety dark carbon will be the answer to high fuel consumption, so you need to change the air filter, or the injector (carburetor) must be adjusted. Gray and 100% snow-white carbon. There is a huge amount of air in the fuel mixture, it is quite unsafe to drive with such options. It is necessary to neutralize the mixture, otherwise overheating and burnout of the valves are common. Replacing valves is not a replacement for the VAZ 2107 , it can fly like a penny.

READ Replacing the heater radiator VAZ 2107

If the electrode has a reddish color, this indicates a high level of additives in the fuel. Change the bandage, narrow, on the spark plug skirt, as a result of which the spark will not pass through, and the engine will simply stop or begin to “triple”. If there are traces of oil, you should pay attention to the oil reflective caps. As a result, you will notice higher lubricant consumption.

If the valve is destroyed, you will see oil stains, gasoline residues and dark deposits on the spark plugs. In addition, it will contain small iron particles. There is no way around this without repairs. Working with detonation can damage the clay part of the part; in this case, it is necessary to replace the spark plug on a VAZ 2107.

Correct clearance VAZ 2107 with injection engine

As I have already shown in the table, the correct spark plug gap for a VAZ 2107 with an inverter engine will be: 1.0-1.1 mm

If the gap is set incorrectly, your car may experience the following types of problems:

• the appearance of unstable engine idle speed,
• jerking when starting and moving, “dips”,
• loss of power and throttle response,
• increase in the fuel appetite of the engine.

The best spark plugs of 2021: rating of engine models (top 6)

Important parts of a gasoline engine car are the spark plugs. They are responsible for igniting the air-fuel mixture in the cylinders. In order for the motor to operate smoothly, they must operate stably, produce a high-quality spark, and be durable.

We decided to compile a rating that includes the best spark plugs for the 2021 engine

.
We were assisted in this work by Pavel Ivantsov , an auto mechanic with 15 years of experience
.

There are a lot of models and manufacturers of auto parts of this type. It is quite difficult to understand such an assortment.

The top spark plugs include reliable products with various types of electrodes:

Noble metals: practical meaning of application

As we already said in the last paragraph, the transition to a multi-electrode circuit did not bring much practical benefit in increasing the service life of spark plugs. In fact, the fight against the very cause of natural wear of spark plugs, that is, erosion of contacts, was replaced with a palliative - the substitution of “spare” ones. To increase the immediate reliability of the electrodes, the design of the spark plugs was significantly redesigned.

In “platinum” and “iridium” spark plugs, the main feature that catches the eye is a very thin central electrode, which precisely localizes the point of origin of the spark - opposite it, a plaque of the corresponding metal is soldered on the side electrode, and the central electrode is also covered with it.

The advantages of such candles are obvious: the electrodes have a service life that, under normal conditions, is two to three times longer than that of conventional candles. The thin central electrode is perfectly self-cleaning, which also contributes to reliable operation.

The disadvantages, alas, are also significant. The first is the price: a set with the Platinum or Iridium inscription will cost at least two to three times more than regular candles. The second, oddly enough, is tenderness: non-fading carbon deposits instantly kill such candles, and mechanical cleaning is contraindicated for them, just like the old-fashioned burning with a torch. First of all, we are, of course, talking about the notorious ferrocene, which is still not uncommon to encounter.

Spark plug. Right choice

Candles

for 8kl motor

VAZ

for LPG and Gasoline Brisk LR15SXC, LR15YS BOSCH WR78X Denso W20tt For 16kl engine

VAZ

.

Soot. bad sign

Carbon deposits on spark plugs can indicate any malfunction, including incorrect adjustment of the fuel mixture. You can find out why the candles are black. During normal engine operation in compliance with all operating rules and regulations, the spark plug electrodes will have a light brown color. Carbon deposits can be found, but in very small quantities the same applies to deposits. In any case, the fuel is often dirty, with impurities that are not completely burned and remain on the walls of the combustion chamber and on the spark plugs.

What is a candle for?

A car's spark plug is one of the main elements of the internal combustion engine. It is this that forms a spark in the combustion chamber of the engine, thereby igniting the air-fuel mixture in the cylinder block, which sets the piston group in motion. For each car there are certain spark plugs that are recommended by the manufacturer. They differ in the long thread of the spark plug, the number of contacts, resistance and hex head.

Candle device