Which spark plugs are best for the VAZ 2107 injector: TOP 10 best spark plug manufacturers

How to choose the right spark plugs for a VAZ

When choosing the best spark plugs for a VAZ engine, you should be guided by the parameters of the car and engine:

1. Heat number. If a spark plug is approved for use on a specific car, then it will be suitable in terms of its thermal characteristics. Small deviations play a seasonal role and depend on the owner’s driving style.
2. Geometric dimensions - diameter and thread pitch, length of the threaded part of the body. Protrusion or recession of the electrode area into the material of the block head is not allowed.
3. The nominal gap between the electrodes can be adjusted. The spark plug will operate uninterruptedly at the factory-set value.
4. The wrench size is of secondary importance and affects the applicability of the existing tool. It is always safer to choose the size that matches the factory size.
5. The sticking out of the electrodes has an indirect effect; the heat rating depends on it.

You should not get carried away with high-reliability spark plugs that have two to four side electrodes instead of the standard one. This will do little, but massive protruding parts can shield the working gap from the mixture flows in the cylinder, which will worsen the conditions for uninterrupted ignition.

All kinds of “patented” products mentioning plasma ignition, annular gap or with miniature prechambers are mostly advertising gimmicks; they will not work normally in all modes. It is better for the engine not to mess with such devices.

With contact ignition

Contact battery ignition was used on outdated engines with a carburetor and 8 valves, for example, VAZ models 2106, 2107 and the like. Such products have a reduced spark gap, since the power of the simplest ignition system is small, the secondary voltage cannot reach this value. The situation is saved by the low compression ratio of older engines. The higher the pressure at the end of the compression stroke, the more difficult it is to break through the spark gap.

Small size and power do not seem to be an obstacle to the operation of the motor. The engines are not particularly economical or environmentally friendly; the carburetors prepare a fairly rich mixture, which is not difficult to ignite even with a weak spark.

With contactless ignition system

For the first time, the contactless system was used on models 2108, 2109, early 2110, then engines of the classic family with Solex carburetors capable of preparing a lean mixture were equipped with such devices. The distributor with a Hall sensor worked on an electronic switch, which developed significant power in the secondary circuit; the voltage was enough to break through the increased spark gap at high pressure. It was possible to install more modernized candles or increase the gap in the classic ones.

For injection engines

With the advent of electronic fuel injection systems, ignition power has increased even further. The distributor has failed. Ignition modules with several coils or blocks for each spark plug without high-voltage wires have appeared. Requirements for parts have changed, including radio interference suppression. Such devices are not interchangeable. The injector can prepare lean and ultra-lean mixtures, while the engine maintains uniform thrust, which a carburetor cannot do.

Injection engines were installed on VAZ models 2114, 2115, 21074, which have 8 valves, and 2112 - 16 valves. These are modern units for their era, so choosing candles for them will not be difficult - many imported analogues are suitable.

DIY replacement instructions

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

Tools and materials

To carry out the procedure you need to prepare:

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

To avoid counterfeiting, you should purchase original products.

The process of dismantling and replacing SZ

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

The process itself consists of the following steps:

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

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

Price issue

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

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

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

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

Rating of the TOP 5 best spark plugs for VAZ cars

Copper-nickel spark plugs for VAZ cars of the “Standard” category are used on carburetor engines with a contact ignition system; their reliable service life does not exceed 10,000 kilometers.

Attention! These are products with a good reputation, so they are massively counterfeited. The rules for identifying the original can be found on the manufacturers’ websites.

Lubricant selection

High-quality automotive transmission oil should:

• resist scuffing and wear;
• be resistant to oxidation;
• have optimal viscosity and temperature indicators;
• resist corrosive effects;
• be resistant to foaming;
• be compatible with a variety of sealing elements;
• have increased bearing capacity for torque.

Lubricants vary in color and can be either yellow or pinkish. This is due to the dyes that are added by the automaker to the petroleum product. After being poured into the transmission, the oil may turn brown. A dark shade indicates that the lubricant has “burned out”.

Original Toyota transmission oil

Don't forget that the best oil fluid is the one recommended by the vehicle manufacturer. It has indicators that ensure uninterrupted operation of the transmission.

Change gear oil on time

However, nothing bad will happen if you fill the gearbox with the wrong lubricant. The gearbox will not operate as efficiently as when filling with the recommended motor oil, but no malfunctions should occur.

Experienced drivers strive to be independent from car services. This is why independent replacement of transmission oil is so common in the Russian Federation. Not everyone wants to spend their money on something they can do with their own hands. You just need to understand the replacement algorithm and understand what the procedure intervals are.

NGK 7529 BP6E

NGK 7529 BP6E

The spark plugs are universal and work across the entire range of temperatures and loads. They are resistant to the formation of deposits on the insulator, maintain the shape of the electrodes and the size of the gap. V-line technology ensures uninterrupted sparking. The copper rod in the central electrode removes heat, preventing overheating and damage to the insulator. The sealing of the housing is adequately done, the tightness is always at its best.

The gap for these spark plugs is 0.9 mm. This means that it is better not to use the product for a carburetor engine, only an injector.

The price for such quality is attractive and does not go out of the general range in the category.

The cost of candles is, on average, 150 rubles per piece.

Advantages and disadvantages

Good engine starting in any weather.

Sparking without interruption due to the use of new technology.

Excellent tightness.

Compliance price/quality.

There are often fakes on the market

CONNECTION FEATURES

The order of connecting high-voltage wires must be strictly sequential, since each cylinder of the engine corresponds to a specific socket on the ignition module. Considering that there is a numbering of the sockets on the ignition module body, the risk of confusing anything is minimal.

The procedure for connecting high-voltage wires of the VAZ 2114 injection type depends on the year of manufacture of your car. Fourteeners before 2004 had 4-pin ignition modules installed, and cars after 2004 had 3-pin coils.

The connection diagram for VAZ 2114 high-voltage wires to the ignition module (until 2004) is as follows:

Connection diagram for VAZ-2114 with ignition coils (after 2004):

In the pictures you can see the numbers of the landing slots. Each number must have a corresponding cylinder connected to it (cylinder numbering is counted from left to right).

To correctly install high-voltage wires on the VAZ 2114, follow the following algorithm of actions:

1. Turn off the ignition. Open the hood and remove the power terminals from the battery;
2. We remove the old GDPs from the mounting sockets on the module and cylinders;
3. We remember the location of the high-voltage wires of the VAZ 2114 and connect new GDPs according to the diagram. Before replacing, it would not be amiss to draw this very diagram by hand on paper so as not to confuse anything;
4. We connect power to the battery and, to check whether we did everything correctly, start the engine.

When installing the wiring, do not try to connect individual air intakes to each other with plastic clamps; to do this, you must use the comb holder that comes with them. A thin clamp can easily wear through the insulating coating. Also make sure that the GDP does not bend.

Connecting armored wires on VAZ 2115 and 2113 is carried out in a similar way.

BOSCH W7DC

BOSCH W7DC

Such candles have a working range that provides versatility of use. Sometimes they work on motors that require different temperature characteristics, which emphasizes the stability of German products.

The model is well assembled - it consists of a copper core and a shell with increased anti-corrosion properties. The gap here is 0.7-0.8 mm. The key size is 20.8.

One can note some optimism in setting the heat number in relation to old VAZ car engines.

The average cost for one candle is 150 rubles.

Advantages and disadvantages

High-quality assembly of the part.

Uninterrupted operation under heavy loads and low temperatures.

Price corresponding to quality.

The mixture may get on the spark plugs.

Signs of incorrect clearance VAZ 2114

A larger or smaller distance leads to rapid wear of the motor. It negatively affects the driving performance of the car. The signs of this problem are usually the following:

• Increased fuel consumption. The car has to be refueled more often than before. At the same time, it may seem that she began to drive better and faster. This indicates an increased spark plug gap;
• Increased car dynamics. The car began to accelerate faster and began to seem more resourceful. At the same time, gasoline consumption is also increasing. This can be seen by sensations and instrument readings. The symptom indicates too much distance;
• Reduced power and dynamics. The car doesn’t seem to be able to pull, it’s getting worse to drive and accelerate. This occurs due to the value of this value being too small;
• The engine is tripping. In this case, the car shakes or the engine shakes. Observed at idle and not only;
• Floating speed. The speed of the power unit is unstable and changes for no apparent reason. This can be seen from the readings on the dashboard;
• Traces of oil in the spark plug well. They can be seen upon examination;
• The engine suddenly stalls at idle and when driving. The engine stops working for an unknown reason;
• Difficulty starting the power unit. It starts very poorly, not the first time. Sometimes the engine may not start at all.

It is not prohibited to operate the machine with incorrect spark plug distance. But driving with such a disadvantage leads to serious damage to the power unit, requiring complex repairs. And driving with this problem is uncomfortable. Therefore, it must be eliminated within a reasonable time.

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.

Troubleshooting

Fortunately, a performance check is available to every car enthusiast and does not depend on technical equipment or the availability of expensive diagnostic equipment. There are several simple, common ways to conduct an independent test: 1. Analysis of the presence and quality of the spark. 2. Testing using a multimeter.

In order to use the first method, it is necessary to dismantle and clean the working surface of the spark plug. Next, a high-voltage wire is connected to the spark plug, the housing is brought to the power unit and the starter is started briefly (for a few seconds). Normal operating parameters are the production of a clear, blue spark. Evidence of a malfunction is a yellowish, reddish color of the spark or its complete absence. The second way is as follows. We take a multimeter and switch the measuring mode of the device to 20 kOhm. We attach the red probe to the side electrode, and connect the black one directly to the contact (where the high-voltage wire is put on). We measure the resistance readings on all four products. Normal resistance levels range from 2 to 4 kOhms. If the indications are different, normal operation of the internal combustion engine is not guaranteed.