Lada Largus: replacing spark plugs in a 16-valve engine

Although spark plugs are consumable items, their role in ensuring engine operation is very high. The correct choice and quality indicators of these products can save the owner for a long time from the need to look for the causes of interruptions in the functioning of the engine. This achieves one of the components of comfortable operation. The power, speed and other parameters developed by the power unit depend on the state of these elements. All this is true for the Lada Largus, whose spark plugs will today become the main characters in the article. Let's talk about how to replace spark plugs.

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...and take it out of the spark plug well.
...and take it out of the spark plug well.

Install the new spark plug in the reverse order.

When screwing in a spark plug, it is necessary to rotate the spark plug wrench or extension with the head by hand, and not with a wrench or ratchet, to avoid damaging the threads of the spark plug hole in the cylinder head.

If the spark plug does not follow the thread, strong resistance to rotation will be felt. In this case, it is necessary to completely unscrew the spark plug and, after cleaning the threads, re-tighten it. Finally tighten the spark plug to a torque of 25–30 Nm.

Attention! Over-tightening the spark plugs can damage the threads in the spark plug holes in the cylinder head.

We replace the remaining spark plugs in the same way.

[How to save on maintenance of Lada Largus] [Maintenance of Lada Largus at 15,000/45,000/75,000/105,000 km] [Maintenance of Lada Largus at 30 thousand km] [Maintenance of Lada Largus at 60 thousand km of run] [Maintenance of Lada Largus for 90 thousand km of run] [Maintenance of Lada Largus for 120 thousand km of run] [Independent maintenance - general recommendations] [Safety rules for self-carrying out maintenance] [Tools required for carrying out maintenance Lada Largus maintenance] [Lamps used in the Lada Largus car]

Lada Largus: replacing spark plugs in a 16-valve engine

Which ones to choose?

The Lada Largus has power units with 8 valves and 16 valves. The engines allow the installation of non-original spark plugs, but their parameters must fully comply with factory requirements, which include external characteristics:

• the leg must have an M14 thread;
• the length of the main part is 19 mm;
• The installation parameter must correspond to the 16th dimension of the socket (spark) wrench.

It is possible to use elements with one or more lateral electrodes. Manufacturers use alloys of chromium, iridium, nickel or platinum as materials in the manufacture of these consumable components.

The LADA Largus version with a 16-valve engine is perfectly suited to related Renault models with the original code “7700500155”.

If we consider analogues, it is recommended to opt for the “Motrio 224018651R” products. These candles are quite rare and cannot be found in some cities. Therefore, as a replacement, you can take a closer look at models such as:

• “SAGEM RFN58LZ” or “BOSCH FR 7 LDC+ 0242235668”;
• "CHAMPION RC87YCL" or "DENSO K20TTK20TT#4".

These consumables can be installed on 16-valve versions of 1.6-liter engines (K4M).

Important! For 8-valve options, it is also recommended to use original products, and in their absence, analogues from manufacturers designated a little earlier.

In this “spark” issue, the difference between LADA Largus engines with 16 valves and 8 valves is that in the first case, a separate coil “works” with each spark plug (there are 4 of them), and in the second case, all 4 spark plugs “serve” one coil. We also note the differences between the candles of the two types of units:

• type of products;
• sizes;
• gap size;
• heat number.

Tools required to replace spark plugs

The table below presents a list of tools that will be needed to successfully replace spark plugs on a Lada Largus car.

Spark plugs for Duster 1.6 and 2.0 l

Renault 7700500155

The original spark plugs 7700500155, which are used for all Renault Dusters, are manufactured by Champion. The manufacturer has the same spare part number RC87YCL, the price is 200 rubles. Also, these spark plugs can be found on sale under the number OE033/T10 (replacement number by the manufacturer). Has one side electrode. Resistance – from 3 to 7.5 kOhm. Also very common is the model of the original spark plug with two side electrodes Renault 7700500168, price - 170 rubles. This model, according to the official catalog, is installed from the factory on 8-valve Renault Megane and Logan engines. It is sometimes installed by official dealers during maintenance on Dusters. As the experience of some Duster car owners shows, when installing spark plugs with 2 side electrodes, a slight decrease in engine vibration during idle operation can be observed. In general, there is no significant difference between the two models of original candles.

In dealerships, when carrying out maintenance, they also often install original spark plugs under article number 224018651R, price - 130 rubles. This spare part is manufactured in Russia, Enels. The box with the original contains spark plugs from Bosch (Champion is not produced at the Russian plant), number 0242235666. Price - 90 rubles. Judging by the reviews of Renault Duster owners, these spark plugs are worse than the original 7700500155, since when they are installed, a deterioration in the dynamic performance of the car is observed.

Dimensions of the original spark plug for Renault Duster 7700500155

The heat rating in the Champion nomenclature differs in meaning from other well-known manufacturers. The heat rating of 8.7 on Champion spark plugs is equal to 7 on NGK spark plugs, 22 on Denso and 5 on Bosch.

When replacing spark plugs on a Duster, you should pay attention to the most popular analogues among drivers:

• 
  Spark plug heat number

• K20PR-U, Denso (Japan). Price - 90 rub. The model has a U-shaped groove in the side electrode, which makes the spark more powerful and ensures better combustion of the mixture. This candle model also has a lot of positive reviews;
• Z 193, BERU (Germany). Price - 130 rub. Most reviews are positive. This model maintains its service life very well, and even when replaced, most drivers still look functional;
• RFN 58LZ, EYQUEM (France). Price – 180 rub. A high-quality spare part with many positive reviews. On the plus side, when installed, there is a decrease in engine noise at idle.

Denso K20PR-U

BERU Z 193

EYQUEM RFN 58LZ

Also, you can install iridium spark plugs on Renault Duster. The most popular model is Denso IK20, price - 460 rubles. They have many positive reviews. According to the observations of drivers, when installing these spark plugs, there is a real increase in the dynamic performance of the engine. Even with long-term operation, the gap practically does not change, and the resistance does not change its indicators. They have a longer service life than standard (nickel) ones, at least 1.5 - 2 times.

Replacement on an 8-valve unit

Job:

1. We clean the areas on the engine block of 8 valves located around the spark plugs. We do this using a rag or a vacuum cleaner.
2. We remove the tips of the high voltage wires from each spark plug (sequentially).
3. Using the key “16” we unscrew and remove the first spark plug and immediately screw in the new product.
4. We put on the tip.
5. We do this with all the candles one by one.

If you remove all the tips at the same time, you will need to mark them in accordance with the cylinder numbers. This is necessary for correct installation, since the spark plug in each cylinder is connected to a strictly defined coil terminal. As you can see, replacing spark plugs is not a complicated procedure, but it is responsible and requires strict adherence to all rules.

What spark plugs are installed on Largus

A note about what spark plugs are installed on the 8-valve Largus from the factory;
what spark plugs the manufacturer recommends; where you can buy original spark plugs at an affordable price. The first 15 thousand on my Gus are long gone. And this is the mileage at which the car undergoes its first maintenance. At the same time, one of the mandatory service work was the replacement of spark plugs. The procedure is not complicated and took me no more than 20 minutes.

But before that the question arose: “What replacement candles should I buy?” Having opened the hood and unscrewing one of the spark plugs, I found out that my 8 valve valve has two-pin spark plugs Eyquem (RFC58LZ2E), made in France. The gap between the electrodes is 0.95 mm (± 0.05 mm). The country of manufacture “Made in France” is indicated on the case.

Here is a photo of one of them:

Where can I buy?

One of the large Moscow online stores, from whose catalog I select spare parts for Largus, gave me the following information on candles:

• Article 224013682R — spark plug for 8 cells Lada Largus (7700500168), 2 electrodes, Romania, original
• Article 224018651R — spark plug for 16 cl Lada Largus (replacement 7700500155), 1 electrode, France, original

I ordered according to the first article, i.e. 224013682R. The purchased candles corresponded to the original ones, with the only difference being that the country of their manufacture was Russia. Information about this is indicated on the packaging. On the body of the spark plug itself are indicated: letter markings of the Renault company, alphanumeric code. Country not specified.

This is what the packaging of candles 224013682R looks like:

And here's the candle itself:

I installed these spark plugs after the first maintenance. I also continue to use them at every scheduled replacement. There are already four technical inspections under my belt. The mileage has exceeded 60 thousand. The flight is normal.

The only question I have left is, what kind of spark plugs come under article number 7700500168 (7700500155)? Maybe just the original French ones? I'll try to buy one of these someday and find out what kind of animal it is.

Factory recommendations

If we contact the manufacturer directly, he redirects us to the operating manual and service book of the car, where not a word is said about spark plugs. To top it off, he sends it to the dealer.

If you look at the Largus manual, then for the K7J and K7M engines Champion RYCLC87 and SAGEM RFN58LZ spark plugs are recommended, and without division into 8-cl and 16-cl.

Analogs offered by online stores

Analogues for 8 cells

• 6962 NGK - from 120 rub.
• 8671004070 Motrio (Renault) - from 170 rub.
• 242235668 — Bosch 190 rub.
• OE026T10 Champion - from 200 rub.
• K20TXR Denso — 290 rub.
• 30530 Asam — 400 rub.

Analogues for 16 cells

• 8671004086 Motrio (Renault) from 160 rub.
• OE033T10 Champion
• 242235666 Bosch from 140 rub.

Happy shopping everyone!

Other articles

Source: https://bakstrer.ru/smotrim-kakie-rodnye-svechi-na-Larguse.html

Purpose and location of candles in Largus

Applying high voltage to the electrodes causes a spark and ignition of the fuel. The design is quite simple, but the materials from which it is made have special requirements. The electrodes must be made of a heat-resistant alloy that conducts current well. It is important that the insulator has high dielectric characteristics along with increased heat resistance. The housing must have a minimum coefficient of thermal expansion, otherwise the spark plug cannot be removed.

Devices for igniting the air-fuel mixture on all car models are located on the cylinder head. An important feature: when installing them, the central and side electrodes must be located directly in the combustion chamber. The formation of a spark occurs as a result of the supply of high voltage by a pulse transformer.

On K4M engines with a 16-valve gas distribution mechanism, this device is installed on each spark plug. This is in contrast to the 8-valve K7M engines, where there is only one ignition coil.

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Spark plugs Lada Largus for 8- and 16-valve engines

Spark plugs for Largus 1.6 differ from each other only depending on how many valves the engine has. On cars with 8-valve engines (K7M, VAZ-11189), the manufacturer installs spark plugs under article number 7700500168. They have a regular nickel central electrode and two side electrodes. The same candles can be found directly from the manufacturer EYQUEM under the article number RFC58LZ2E. An analogue from a Russian manufacturer has article number 224013682R. These models are no different from each other and are interchangeable.

On Largus with a 16-valve K4M engine, spark plugs are installed under article number 7700500155. Unlike the previous spare part, these spark plugs have one side electrode, but they are nickel. The French manufacturer EYQUEM has the article number RFN58LZ. The Russian analogue has article number 224018651R.

On a Largus with a 16-valve engine, you can also install spark plugs with 2 side electrodes from an 8-valve engine, but not vice versa. On 8-valve valves, only 2-pin ones are installed. As drivers note, spark plugs with 2 side electrodes slightly improve engine performance by reducing vibration.

Read more about the sizes of original candles in the table below.

*nomenclature from NGK

7700500168

7700500155

The most commonly used substitutes are presented below.

Description of replacing spark plugs on Lada Largus

Instructions for replacing spark plugs on a Lada Largus are presented below.

• Open the hood.
• Press the latch and disconnect the connector from the ignition coil.

• Unscrew the coil mounts.

• Remove the coil.

• Unscrew the spark plug.

• Install a new consumable.

Instructions for repairing and replacing the ignition coil

Removing and replacing short circuits is carried out according to the following algorithm:

1. First you need to de-energize the car by disconnecting the negative terminal of the battery.
2. Having released the latch, you need to disconnect the block with the wires coming from the controller.
3. Then the high-voltage wires should be disconnected from the short circuit.
4. Next, unscrew the screws securing the ignition module to the bracket and remove it from the bracket.
5. The new module is installed in place of the old one. Next, perform the reverse steps of removal.

Top 5. BERU Z16

• Nomination

• Nomination

22 reviews taken into account from resources: Otzovik, Avtodoc

• Nomination
  A direct analogue of domestic production has catalog number 224013682R. Other good alternatives to native candles can be found in the table below.

  Table - The best alternatives to original spark plugs for Lada Largus with an 8-valve engine.

  CompanyArticle numberApproximate cost, rubleBosch24223566890-110NGK6465120-150Mazda000018BP03170-200DensoK20TXR220-250Febi13517205-240

  Lada Largus with a 16-valve engine uses branded spark plugs with catalog number 7700500155. Their price varies from 100 to 200 rubles. The spark plugs have a classic design with one side and one central nickel electrode. These consumables are also produced by EYQUEM. This company produces a direct analogue. It has the article number RFN58LZ. The domestic direct analogue is produced by the Engels plant. It has catalog number 224018651R. You can see other good alternatives to original consumables in the table below.

  Table - Recommended alternatives to original spark plugs for Lada Largus with a sixteen-valve power unit.

  CompanyArticle numberApproximate cost, rubleBosch24223566890-110NGK6465120-150Mazda000018BP03170-200DensoK20TXR220-250Febi13517205-240

  On a Lada Largus with a 16-valve engine, it is possible to install spark plugs with two side electrodes from an eight-valve power unit. However, there is no interchangeability in the opposite direction.

  Lada Largus is equipped with relatively cheap nickel spark plugs from the factory. At the same time, the manufacturer allows the use of iridium consumables on the machine. Such spark plugs have a longer service life and ignite the fuel-air mixture better. One good option for an eight-valve engine is the Denso IW20, and for a 16-valve engine the Denso IK20.

When replacement is required

The spark plugs should be replaced in accordance with the vehicle maintenance regulations, that is, every 15 thousand km. These are the requirements when it comes to standard spare parts supplied by the manufacturer. There are many innovative types of these platinum plated or iridium plated parts available in the aftermarket today. In such cases, their service life is much longer.

Spark plugs must be replaced not only as planned or for preventive purposes, but also due to malfunctions. This could be contamination of the skirt with carbon deposits or oil when driving on a cold engine, or coking of the thermal cone caused by increased oil consumption. If replacement is not done in a timely manner, the electrodes may burn out, resulting in an increase in the gap and an insulation breakdown. One of the causes of problems may be a manufacturing defect, leading to the passage of gases through the insulator and housing. If these faults are present, the car does not start well or the engine begins to stall. This is unacceptable for further operation of the car - you need to find the damaged spark plug and replace it.

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Spark plugs for Lada Largus

When buying candles on Lada Largus, you do not just purchase the necessary consumables. The correct selection of an element, insignificant in size and cost, determines the behavior of the car on the road, the cost of its maintenance, and your mood.

Correctly selected spark plugs directly affect the speed, dynamic, and performance characteristics of the car.

The spark plugs included in the ignition system of a gasoline internal combustion engine serve to generate an electrical discharge. Under the influence of incoming voltage, a spark is formed between their electrodes. The subsequent ignition of the fuel mixture provides the energy necessary for the vehicle to move.

Selection of candles for Largus

Faulty spark plugs can cause a lot of problems and hassle. The most serious ones include the following:. All this makes the choice of spark plugs for Lada Largus not just part of the next technical or seasonal maintenance. Lada Largus engines allow the use of spark plugs from different manufacturers, models, and operating data.

Spark plugs for Lada Largus

The ease of starting the engine and the stability of its operation depend on the condition of the spark plugs of the Lada Largus car. Consumables affect gasoline consumption and the dynamic characteristics of the vehicle. Spark plugs work in difficult conditions. They are constantly influenced by an aggressive environment. As a result of exposure to thermal, chemical, mechanical and other loads, they have a short service life. Therefore, consumables require periodic replacement.