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.
What is a candle for?
Spark plugs in a car are one of the main elements of the ignition system. It is the spark plugs that ignite the fuel mixture while it is being compressed by the piston. When the fuel in the combustion chamber is compressed, the spark plug produces a spark, thereby igniting the mixture.
The spark on the spark plug appears under the influence of high voltage generated from the ignition module. The voltage on the spark plug can reach several tens of kilovolts, which is a lot. For example, in a household outlet there is only 220V. Therefore, due to the high voltage, touching high-voltage wires while the car engine is running is PROHIBITED.
What is iridium?
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Iridium is a very hard metallic element. It is believed that this material was formed on our planet due to meteor showers many years ago. It is precisely because this metal has high hardness that it is used as an electrode material for the manufacture of spark plugs
Its second important property is melting at a temperature of about 2,800°C.
Very reliable, have a long service life and are resistant to temperature changes - all these are iridium spark plugs. Reviews from owners of cars “filled” with this metal confirm this fact on thematic forums.
Since the 80s of the last century, this material began to be actively used as an alloy for igniters in industrial production. Due to its fragility and low electrical conductivity, this metal cannot be used in its pure form. Only in alloys does iridium show its best properties.
Signs of faulty spark plugs
Signs of faulty spark plugs can include many different factors, which will be similar to problems in the fuel supply, problems with the ignition module and high-voltage wires.
It is necessary to check the spark plugs if the following signs of malfunction appear on your car:
- The engine is running rough (one of the cylinders is not working);
- The car's dynamics disappeared;
- Difficulty starting the engine;
- Fuel consumption has increased;
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.
- We accelerate the car to 40 km/h.
- We sharply press the accelerator pedal and listen to the sound of the engine.
- If noise appears and disappears when the speed increases to 60 km/h, then there is no need to adjust the SZ.
- 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).
Checking the spark plugs
Checking spark plugs is quite simple; their condition can even be assessed visually. To do this, just unscrew the spark plugs and check their condition and compare them with the picture below.
Even if the spark plug is externally in excellent condition, this does not mean that it is working properly. To definitely ensure that the spark plug is working properly, you need to replace it with a new one or swap it with a spark plug from another cylinder. If this spark plug does not work on another cylinder, then there is a breakdown in it, and if the spark plug starts working, then most likely the problem is not in the spark plug.
Product delivery options
Note! Below are the shipping methods available specifically for this product. Payment options may vary depending on the delivery method.
Detailed information can be found on the “Delivery and Payment” page.
Parcel by Russian Post
Available payment methods:
- Cash on delivery (payment upon receipt)
- Using cards Sberbank, VTB, Post Bank, Tinkoff
- Yandex money
- QIWI
- ROBOKASSA
Shipping throughout Russia. Delivery time is from 5 to 12 days.
Parcel by Russian Post 1st class
Available payment methods:
- Cash on delivery (payment upon receipt)
- Using cards Sberbank, VTB, Post Bank, Tinkoff
- Yandex money
- QIWI
- ROBOKASSA
Shipping throughout Russia. Delivery time – from 2 to 5 days. More expensive than regular delivery by Russian Post, approximately 50%. Parcel weight up to 2.5 kg
Express Parcel EMS
Available payment methods:
- Cash on delivery (payment upon receipt)
- Using cards Sberbank, VTB, Post Bank, Tinkoff
- Yandex money
- QIWI
- ROBOKASSA
Shipping throughout Russia. Delivery time – from 3 to 7 days. More expensive than regular delivery by Russian Post, approximately 100%.
Transport companies
Available payment methods:
- Using cards Sberbank, VTB, Post Bank, Tinkoff
- Yandex money
- QIWI
- ROBOKASSA
Delivery is possible to any locality where there is a representative office of the transport company. Delivery time – from 2 to 10 days. Sending large parcels is approximately 50% more profitable than by Russian Post.
Gap on spark plugs VAZ 2114
One of the most important parameters in a spark plug is the gap between its contacts. This gap affects the formation of a spark at the contacts; the smaller the gap, the stronger and faster the spark; the larger, the weaker.
On VAZ 2114 engines, spark plugs must have a gap of 1 mm. This gap is optimal for proper and reliable operation of the engine.
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.
9th place: TZ 17 DVRM
The next representative of the rating implies the presence of as many as three electrodes on the working part of the device. A large number of motorists install such spark plugs on a VAZ carburetor or even an injection type. Thanks to the use of advanced developments in design, the manufacturer has increased the service life of the electrode.
Pirate copies also play a role here - there are a large number of them, which makes buyers cautious about purchasing products.
- good performance;
- long period of operation;
- wide use.
The best spark plugs for VAZ 2114
One of the most popular and best spark plugs for the VAZ 2114 are spark plugs from NGK. NGK No. 11 spark plugs ensure excellent engine performance at all speeds, as well as in all temperature conditions. These candles will be an excellent option in terms of price-quality ratio. The cost of these candles is around 1000 rubles per set.
Another spark plug from the domestic manufacturer AU17DVRM , these spark plugs have proven themselves well on the market, and besides, AvtoVAZ installs just such spark plugs on its cars from the factory. The cost of these candles is around 700 rubles per set.
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.
Replacing spark plugs
Useful video on replacing spark plugs on a VAZ 2114
To replace spark plugs on a car, you do not need a higher education as a car mechanic, you just need to have spark plug wrenches and a new set of spark plugs.
- Remove the spark plug wires from each spark plug;
- Unscrew the spark plugs using a spark plug wrench;
- We screw in new spark plugs and put on the wires;
The spark plugs have been replaced, as you can see, there is nothing complicated about it. Be careful to connect high-voltage wires in a strict order, from left to right. Incorrect connection of the wires may make it impossible to start the internal combustion engine.
Why iridium?
Installing the ignition on a VAZ 2107 carburetor, marks, gap in breaker contacts, checking ignition
Such a wide selection of candles pampers car enthusiasts only for 20-25 years. Before this, the choice was much poorer.
Platinum candles were already on sale, but one could only dream of decent quality or reliability.
The best manufacturers in the world did everything possible to improve the quality of the product and achieve their goals, namely ensuring maximum reliability, long service life and reducing energy consumption.
In 1994, NGK specialists finally managed to create high-quality spark plugs using a special material - iridium.
What are its advantages? — It has a maximum melting point (in this indicator, iridium surpasses even platinum), excellent anti-corrosion properties and high quality.
The developers managed to make the thickness of the electrode minimal. Moreover, it was the tip that was made of rare metal.
In terms of its hardness, iridium occupies one of the leading positions. Many believe that the metal is based on the material of a meteorite that arrived on our planet many millions of years ago. Hence its hardness indicators.
Another advantage of iridium is its ability to withstand high temperatures. Metal can only be melted when heated to 2,500 degrees Celsius.
Iridium has been actively used in the industrial sector (since the 20s of the last century). But in practice it is not used in its pure form, but in the form of a special alloy.
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This is not surprising, because without the addition of metals, iridium is extremely fragile and useless in production. That is why in practice only alloys are used.
Checking and replacing the ignition coil
On rear-wheel drive cars of the classic family with a carburetor engine, the ignition coil (in automotive circles it is often called a “bobbin”) is installed in the engine compartment on the left mudguard and secured with two nuts.
On later injection versions, an ignition module is installed, mounted on the cylinder block.
Before deciding to replace the coil, you should make sure that it is not working, otherwise the repair may be useless and money will be wasted.
Verification methods
The simplest method, which does not require special equipment, but is unsafe. Remove the central high-voltage wire and crank the engine by turning the ignition key. At the same time, we lean the removed wire against ground or the car body. If there is a spark, then the coil is ok. An assistant may be needed for this operation.
The second method, which is also more accurate, is to measure the resistance of the coil windings using a multimeter measuring device or “popularly” using a tester.
Measuring ignition coil resistance
We clean the coil contacts (studs on the body). The first check is the resistance of the primary winding. To do this, connect an ohmmeter to two studs and take measurements. Depending on the type of coil being tested, the resistance should be within the following limits: coil 2101-2107 B-117A = 3-3.5 Ohm; coil 2108-099 027.3705 = 0.45-0.5 Ohm.
Then we check the resistance in the secondary winding circuit. We connect one terminal of the tester to the central terminal of the high-voltage wire, and leave the second terminal of the probe at the terminal of the primary winding. In this case, the resistance of the working coil should be as follows: B-117A = 7.4-9.2 kOhm; 027.3705 = about 5 kOhm.
Replacement with a new one
To replace the ignition coil (bobbin) of a VAZ 2107, you must do the following:
- We remove the high-voltage wire from the coil cover.
- Using a size 8 wrench, unscrew the nut from the terminal marked “B” on the coil cover and remove the ends of the green and brown wires. To avoid losing small nuts, we recommend putting them in place.
- Similarly, disconnect the blue wire with a black stripe from the terminal marked with the letter “K”.
- If the colors of the wires turn out to be different, and this is possible, mark their position before disconnecting. From terminal “B” the wire is laid in the wiring harness, from terminal “K” - one is connected to the terminal of the ignition distributor, the second goes into the harness.
- Using a 10mm wrench, unscrew the coil mounting nuts three to four turns.
- We remove it from the car.
We install the new coil in the reverse order, observing the written order of connecting the wires.
Models and manufacturers
There are several models of ignition coils on the shelves of car dealerships. For “classics” (2101-2107) - B-117A, and for VAZ cars of the eighth family (2108-21099) - 027.3705.
Basically, all reels are of domestic production, manufacturing companies: ATE-2, Citron, Stary Oskol. According to numerous reviews, coils from Stary Oskol are considered to be the highest quality.
Recommendations for replacement intervals
According to official recommendations, replacement of spark plugs is required every 30 thousand km. In real conditions, low fuel quality causes consumables to fail by 12-15 thousand km. The need for replacement can be determined by the following symptoms:
- there is a missing spark;
- During the inspection, black spark plugs with irremovable carbon deposits were found;
- Any damage shown in the image below has been identified.
