How to replace spark plugs in an 8-valve Lada Largus engine

Top 5. BERU Z16

Rating (2021): 4.15

Optimal combination of price and quality Candles work flawlessly in severe frost, are affordable and have a good service life. The balance between price and quality is obvious.

• Characteristics

  Average price: 192 rub.

• Country: Germany
• Center electrode material: nickel
• Heat number: 7
• Gap, mm: 1.1
• Resource, km: 30000

Owners of Lada Largus 1.6 choose spark plugs from the German brand BERU for their high-quality assembly and availability. The car accepts them with gratitude: the engine starts with half a turn, runs smoothly and is more fuel efficient. The spark plugs effectively “light” for the entire guaranteed 30,000 km. But, judging by the reviews, few people last longer. Some Largus owners prefer to change them after about 20,000-25,000 km for fear of not starting in the cold. At the same time, there are practically no complaints about earlier failure of spark plugs. In general, a good option for a budget 8-valve model.

Advantages and disadvantages

• Effective in any weather
• Economical
• High quality assembled

• Rarely work after 30,000 km

How to extend the life of spark plugs on Largus?

The most important rule that will help extend the life of spark plugs on the Lada Largus is periodic monitoring of their condition. On gasoline engines, it is enough to systematically diagnose, clean and check the gaps between the electrodes. The maintenance can be completed at this point, since the element is quite unpretentious.

Carbon deposits are removed using a special brush with soft metal bristles. If you cannot cope with the contamination, you can place the candles in a container with ammonium acetate, but before doing this, the part must be degreased. After 24 hours, carbon deposits can be removed with a cloth.

Attention! If, when servicing spark plugs, there is a need to use aggressive chemicals, then there is every reason to carry out engine diagnostics. Heavy carbon deposits on the electrodes occur when there is a serious malfunction of the power unit.

Another important parameter when checking spark plugs is the size of the gap between the central and side electrodes. The normal value is indicated as a marking directly on the surface of the part. You can determine the gap using a special feeler gauge with a round cross-section; a flat feeler gauge is not suitable for these tasks. You can adjust the indicator to a normal value by bending the side electrode.

There is no need to service spark plugs on diesel engines. On such engines, the part has a complex design, so during diagnostics there is a possibility of the spark plug breaking off. Therefore, we do not recommend unnecessarily removing spark plugs on diesel engines. Although this certainly does not concern Lada Largus owners, because such models with a diesel engine do not come off the assembly line.

Top 4. CHAMPION OE063T10

Rating (2021): 4.25

Reliable and efficient Inexpensive spark plugs with performance characteristics that guarantee reliable operation of the Largus engine and fuel economy.

• Characteristics

  Average price: 223 rub.

• Country: Italy
• Center electrode material: nickel
• Heat number: 10
• Gap, mm: 1.0
• Resource, km: 30000

Like other representatives of our rating, these spark plugs work flawlessly in both summer and winter. Some cars leave the assembly line with them and consistently drive 30,000 km before the planned replacement. Owners of Lada Largus notice that the new spark plugs start the engine perfectly, which even idles without failure. Gasoline consumption is reduced by up to 10%. However, towards the end of the spark plugs' life, their effectiveness in relation to the engine decreases slightly. Few people leave them running longer than the recommended mileage, because the engine loses its power, which means gasoline consumption increases noticeably. Although this is observed when using other candle models beyond the deadline.

Advantages and disadvantages

• Reasonable price
• Reliable build
• Standard resource

• Ineffective after the resource has expired

Which spark plugs to choose for Lada Largus?

Without spark plugs, it is impossible to ensure ignition of the fuel mixture in the combustion chamber of the power unit. The manufacturer of Lada Largus claims that the life of standard spark plugs is enough for 30,000 km. If you follow the rules of operation and maintenance, this figure may increase, but it is still better to adhere to the recommendations of AvtoVAZ. Otherwise, you may encounter problems such as:

1. increased load on the catalyst;
2. reduction in engine power;
3. uncontrolled detonation of the fuel-air mixture;
4. Unstable operation of the engine when driving and idling.

The manufacturer installs spark plugs on the car called Champion Ryclc87, as well as Sagem RFN58LZ. You can exchange them for original ones or choose an analogue from another brand. There is a wide variety of models on the market, which makes it very difficult to choose. Much depends on the type of engine that is installed on the car. For example, for the K4M engine, the automaker advises using original spark plugs from Renault called 7700500155. For an 8-valve power unit, it is better to give preference to 770050016, also from the Renault brand.

Attention!

You cannot install spark plugs from different manufacturers. These parts are replaced exclusively as a set to ensure similar performance in each cylinder.

The engines with which the Lada Largus is equipped have 8 or 16 valves. Such power units allow the installation of not only standard spark plugs, but their main parameters and characteristics must correspond to the factory ones, including:

1. leg thread – M14;
2. the main part should be 19 mm in length;
3. The installation size corresponds to the 16th number of a special key designed for dismantling and installing spark plugs.

Judging by reviews from car owners, the actual service life of standard spark plugs is 50,000 km. This indicator is possible with moderate operation of the machine, as well as regular maintenance, which should include inspection, removal of carbon deposits, and measurement of the gap size.

The author of the popular Youtube channel “Ildar AUTO SELECTION”, Ildar Sibgatullin, shared useful recommendations: “The spark plugs should be removed only after the engine has been preheated to operating temperature. When installing, each candle should be lubricated with non-stick grease, which will facilitate dismantling in the future. It is important to maintain the tightening force to avoid unpleasant moments.”

Top 3. BRISK DR15YC-1

Rating (2021): 4.51

22 reviews taken into account from resources: Otzovik, Avtodoc

The most affordable These spark plugs have a minimal cost, but provide stable ignition of the fuel-air mixture throughout the entire declared service life.

• Characteristics

  Average price: 92 rub.

• Country: Czech Republic
• Center electrode material: nickel
• Heat number: 15
• Gap, mm: 1.0
• Resource, km: 30000

These spark plugs are ideal for Lada Largus with a 16-valve engine. Car owners note that even in severe frost they have no problems starting the engine. The engine with them demonstrates stable operation and idle speed without failures. Of course, all this happens with timely replacement of spark plugs. Some drivers, especially residents of northern regions, take precautions before the onset of cold weather. They change spark plugs without waiting for 30,000 km. Some do this for 15,000 km, others for 20,000 km. However, the cost of such a kit for a car allows replacement more often than recommended by the manufacturer. And do it without burdening your budget.

Advantages and disadvantages

• Stable spark
• High quality build
• Low price

• Short service life

See also:

• 5 best spark plugs for Lada Granta

Causes of spark plug failures on Lada Largus

Before installing new spark plugs on a car, it is necessary to carry out diagnostics and determine the reasons for their failure. The most common signs of poor spark plug condition, which can be determined visually, include:

1. Carbon formation.
   The first reason for the appearance of soot deposits is low fuel quality. Carbon deposits are deposited on the surface of the electrodes due to excessive amounts of oxygen in the fuel-air mixture. Another provoking factor is the ineffectiveness of the air filter, which often occurs when it is dirty or damaged. In more rare cases, carbon deposits appear as a result of breakdowns of oxygen or temperature sensors, as well as malfunctions of the injection system.
2. Oil deposits
   . This symptom indicates wear of the piston group elements. Oil deposits occur when too much oil is added to the engine.
3. Yellow plaque
   . This sign requires the driver to pay attention to the quality of the fuel, or rather its composition. The presence of a large number of additives in the lubricant and fuel colors the surface of the spark plugs red and also yellow. The Lada Largus engine reacts sensitively to various chemical additives in gasoline, so before use you should analyze the feasibility of using additives.
4. Intensive wear of the central and side electrodes
   . This problem occurs when the ignition settings are incorrect. We also often see this picture when valves wear out. The third most common reason is the use of low-quality fuel, as well as aggressive additives. In particularly advanced cases, the electrodes may even melt.
5. The wear rate and performance of spark plugs are affected by the quality of materials and production technology. That is why we recommend choosing parts from trusted manufacturers, for which we have compiled a list of the best options.

Top 2. DENSO IK20TT

Rating (2021): 4.65

35 reviews from resources taken into account: Ozone

The best resource is 120,000 km - this is exactly the mileage these spark plugs with iridium electrodes are designed for. In terms of service life, they lead our rankings by a huge margin from other participants.

• Characteristics

  Average price: 786 rub.

• Country: Japan
• Center electrode material: iridium
• Heat number: 20
• Gap, mm: 1.0
• Resource, km: 120000

Iridium spark plugs with a record declared life. Dear ones, but they serve their time honestly. With flagship performance features, they are still cheaper than similar models from other brands. The manufacturer managed to create reliable spark plugs with thin electrodes, thereby reducing their cost. DENSO IK20TT provide stable spark and flawless operation of the Largus engine (with 8 and 16 valves). Some car owners feel that after installing these spark plugs, the torque at low engine speeds increased. Many people note smoother engine operation and longer service life of the spark plugs. But not all car owners are willing to pay that kind of money for candles.

Advantages and disadvantages

• Stable sparking
• Durability
• Saving gasoline

• High price

See also:

• 5 best spark plugs for Lada Vesta

The best spark plugs for Lada Largus

For Lada Largus with a 16-valve engine, spark plugs with two electrodes are suitable, which are suitable for an 8-valve engine, but the other way around will not work. On 8-valve engines, only 2-pin spark plugs are installed. They have two side electrodes; such products increase the efficiency of the power unit, plus it reduces vibration during operation.

There are a large number of different models of car spark plugs on the market that are suitable for the Lada Largus. However, not all of them correspond to the declared characteristics, ensure normal operation of the power unit and have a long service life. We tested a large number of candles from dozens of manufacturers, which allowed us to create a list of the best candles. When compiling it, we took into account the results of our tests, as well as reviews from car owners and automotive experts.

BERU Z16

Rating: 4.9

This model demonstrated trouble-free operation in harsh climatic conditions; during testing, the ambient temperature was about -15 degrees. Candles from the German brand are made of high-quality materials, so the product has a long service life. The engine starts with a half turn of the key, runs smoothly and consumes less fuel. The service life of the BERU Z16 is 30,000 km, although many car owners install a new kit after 20,000 km for fear of frost, but this is unnecessary. This is a good budget option for an 8-valve power unit.

BERU Z16 guarantees efficient fuel combustion over a wide temperature range; this feature ensures stable starting and operation of the engine, regardless of the temperature outside. A high-quality spark stream from spark plugs ignites even a lean fuel mixture. Characteristics of BERU Z16:

1. thread diameter – 14 mm;
2. thread length – 19 mm;
3. heat value – 7;
4. wrench jaw size – 16 mm;
5. presence of side electrodes – one;
6. tightening torque – 25 Nm;
7. the gap between the electrodes is 1.1 mm.

BERU has been supplying ignition, air conditioning and cooling components to the automotive market for a century. During this time, the brand has established itself as one of the most reliable and authoritative. Production bases are located in 22 countries around the world. BERU products meet high quality standards, which is confirmed by international certificates.

Advantages

• stable operation in harsh climatic conditions;
• have a positive effect on fuel consumption;
• have high build quality.

Flaws

• remain operational up to 30,000 km, after which they are subject to replacement.

CHAMPION OE063T10

Rating: 4.8

Products from a well-known American brand are distinguished by high quality, long service life and resistance to increased loads. The spark plug electrode is made of an alloy of iron, chromium, nickel and copper. This combination guarantees excellent electrical conductivity and resistance to oxidative processes. Many automakers equip their cars with CHAMPION OE063T10 spark plugs right off the assembly line, which confirms the high quality of the product. After installing the spark plugs, the engine runs stably both at idle and at high speeds, while fuel consumption is reduced by 10%.

A feature of this spark plug model is its high reliability and long service life. Testing from various independent companies showed good results in the city and on the highway. Main technical characteristics:

1. thread diameter – 14 mm;
2. thread length – 19 mm;
3. heat value – 10;
4. wrench jaw size – 16 mm;
5. presence of side electrodes – one;
6. tightening torque – 28 Nm;
7. the gap between the electrodes is 1.0 mm.

For the production of candles from the CHAMPION brand, only high-quality materials are used, and production is carried out on high-precision equipment, which guarantees a long service life. A team of professionals controls every stage of production, so the end consumer receives a product without defects.

Review by eygeniy96 (owner of Lada Largus) on drive2: “These spark plugs were installed on my previous car - Renault Logan - from the factory. We drove about 40,000 km without any problems, so I decided to install it on the Lada. The engine began to run more smoothly, and was started even in winter when it was below zero. It seemed to me that fuel consumption had decreased, but I didn’t measure it, so I can’t say with certainty. After reaching a critical mileage of 30,000 km, the engine lost power, and fuel consumption increased further. As I understand it, this indicates that a new kit needs to be installed.”

Advantages

• affordable price;
• high-quality assembly from durable materials;
• reduce consumption.

Flaws

• resource is 30,000 km.

BRISK DR15YC-1

Rating: 4.7

The BRISK company takes a responsible approach to the manufacture of its products, thanks to which it has been possible to reduce the likelihood of defects and also ensure a long service life. The body of the product is made by cold pressing, its surface is protected from corrosion. The central electrode has excellent thermal conductivity and resistance to temperature and chemical influences in the combustion chamber.

The electrodes of this model are made of an alloy of platinum, iridium, silver, and yttrium. This choice of material ensures uninterrupted operation, long service life and high technical parameters. The body of the spark plugs is made by cold pressing; the strength test showed greater tensile strength. The characteristics of BRISK DR15YC-1 are as follows:

1. thread diameter – 14 mm;
2. thread length – 19 mm;
3. heat value – 10;
4. wrench jaw size – 16 mm;
5. presence of side electrodes – one;
6. tightening torque – 25 Nm;
7. the gap between the electrodes is 0.7 mm.

The BRISK company takes a responsible approach to the manufacture of its products; the main task of the developers is to meet the highest standards and exceed customer expectations.

Advantages

• enters the low price segment;
• ensures stable engine operation;
• The item is made of quality materials.

Flaws

• The declared resource is 30,000 km.

DENSO IK20TT

Rating: 4.6

Spark plugs from the famous Denso brand are of high quality. The part has a thin central electrode, its diameter is 0.4 mm, while the ground electrode is 0.7 mm. The declared service life of the product is several times greater than that of traditional nickel analogues. This spark plug has a positive effect on the efficiency and economy of the power unit.

The spark plugs provide stable sparking at minimal voltage when compared with similar models. In the cold season, the fuel mixture ignites without any problems, and the temperature outside the window can even drop to -25 degrees, as confirmed by customer reviews. This result is due to the central electrode with a thickness of only 0.4 mm, made of expensive metals. Characteristics of DENSO IK20TT:

1. thread diameter – 14 mm;
2. thread length – 19 mm;
3. heat value – 20;
4. wrench jaw size – 16 mm;
5. presence of side electrodes – one;
6. tightening torque – 25 Nm;
7. the diameter of the central electrode is 0.4 mm.

Spark plugs for DENSO IK20TT passenger cars ensure stable engine operation even with a lean fuel mixture. The use of modern equipment, high-quality materials and sophisticated production technology made it possible to create the best candles both in the domestic and foreign markets.

Review by SergeyNicolaevic (owner of Lada Priora) on drive2: “The bad experience of using AU17DVRM car spark plugs made me look at better quality and more expensive parts. I decided to give preference to the iridium DENSO IK20TT and was completely satisfied. Engine performance has noticeably improved, fuel consumption has decreased and cold starting has been stabilized. It’s worth noting that, according to my calculations, fuel consumption decreased by 10%, which I consider an excellent result for candles costing 3,000 rubles.”

Advantages

• resource can reach a record 120,000 km;
• increases engine efficiency;
• reduces the amount of harmful emissions;
• ensures stable engine operation even in harsh climatic conditions.

Flaws

• the cost is slightly higher compared to competitors.

NGK BPR6ES-11

Rating: 4.5

Candles from a well-known brand in Japan are made in France. This is one of the most popular options for owners of the 8-valve injection Largus. High technical characteristics guarantee stable engine operation even in the most extreme climatic conditions. Some car owners are wary of the NGK BPR6ES-11 due to its high cost. However, purchasing these parts guarantees a long service life, efficient engine operation and reduced fuel consumption. Tests by independent companies have confirmed the high quality of candles from the NGK brand.

Spark plugs with a nickel electrode ensure stable ignition of the fuel mixture throughout the entire service life. By the way, the declared service life of the model is 30,000 km, although some users note longer operation, up to 50,000 km. Characteristics of NGK BPR6ES-11:

1. thread diameter – 14 mm;
2. thread length – 19 mm;
3. heat value – 6;
4. wrench jaw size – 20.8 mm;
5. presence of side electrodes – one;
6. tightening torque – 28 Nm;
7. the gap between the electrodes is 1.1 mm.

NGK holds about 30% of the global automotive spark plug market. For decades, the Japanese brand has been improving its production base, improving product quality and developing modern manufacturing technology. This has a positive effect on the performance of spark plugs, which is why they are popular among car owners.

Advantages

• stable operation of the power unit;
• made from high quality materials;
• The product completely exhausts its declared service life (30,000 km).

Flaws

• There are fakes on the market, so you need to be careful when purchasing candles.

The choice of spark plugs is an important and responsible event, on which the efficiency of the Lada Largus engine directly depends. We checked dozens of models from various manufacturers and compiled a list of the best options. When researching the market, we carefully analyzed user reviews, studied tests from reputable independent companies, and also read the opinions of automotive experts.

Spark plugs from different manufacturers

Suitable single-contact spark plugs are Renault spark plugs for the K7M eight-valve power unit. They are simple and will become a reliable source of ignition. They are produced in France, but if in another country, then they must be subject to strict control by the company. Candles from Bosh, NGK and Denso can also become high-quality analogues.

Bosch FR7DC+ from German manufacturers, coated with iridium, are considered one of the best. Other models you can consider: Denso K20PRU11 and NGK 4856 BKR6E.

Dimensional and installation parameters of spark plugs for Largus FL

As for the overall and installation dimensions of both original and analog igniters for facelift Largus, they all have the same parameters:

• numbers 6 – degrees of heat;
• 19 mm length of the threaded part;
• diameter/thread pitch – M14/1.25;
• gap – 0.9 mm;
• hexagon - turnkey 16.

Tabular visualization of official, both original and analog products for 8- and 16-valve Largus FL, is as follows: