Daewoo Nexia 16 valve spark plugs. Candle gaps for Daewoo Nexia. Iridium or Nickel? Which candle to buy

In the electronic ignition system, which is one of the most important components modern car, high voltage current is generated and distributed thanks to electronic devices. Electronic system has many distinct advantages and also makes it easier to start the engine in winter.

differ depending on the car model. The electronic control unit processes the signals from the input sensors, acting, in turn, on the igniter. The igniter, which is based on a transistor, is a kind of electronic board that turns the ignition on / off. When the transistor is on, current flows through the primary winding of the coil. If the transistor is closed, it is cut off, and the current is induced through the secondary winding of the coil. The electronic ignition system can have different coils: one common, individual or twin. Common coils are used in systems that have a valve. Install directly on the candle customized coils, therefore, high-voltage wires are not used in such a system. Twin coils are used in direct ignition systems. If the engine has four cylinders, one coil is installed on the 1st and 4th, as well as on the 2nd and 3rd cylinders, each of which is responsible for

Ignition systems: from simple to best!

The ignition system is an integral part of any petrol or gas engine. With all the variety of technical nuances in this matter, all ignition systems with a dynamic distribution of the supplied voltage can be divided into contact and non-contact. The following article is devoted to their main features, as well as the reasons for the emergence of systems with static voltage distribution (electronic ignition).

This switch. Initially, such blocks had extremely low reliability (sometimes even less than 10 thousand km.) However, in the process of design improvements this parameter was brought to a more or less acceptable level. Contactless ignition systems made it possible to reduce fuel consumption, make it easier to start the car in the cold season, increase engine torque at low speeds and its power at high speeds, as well as somewhat reduce harmfulness exhaust gases due to increased spark power and more complete combustion of the fuel-air mixture. Nevertheless, the ignition timing was controlled using physical sensors that are part of the distributor. Interrupter-distributor ("distributor") The interrupter-distributor of ignition, also known by motorists under the name "distributor", is an integral part of both contact and contactless ignition systems, although in the second case its design is somewhat different

For engine internal combustion spark plug is an important element, without which power unit will not work. Over time, the efficiency of the ignition elements deteriorates. As a result, an urgent replacement is required.

When is it necessary to replace candles in Daewoo Nexia?

Russian auto repairmen advise replacing candles with Daewoo nexia every 15 thousand kilometers. This is explained by the low quality of fuel and the harsh Russian climate. Note: the ignition element can withstand high loads. A quality ignition element cannot be cheap. If the ignition element is faulty, the instrument panel may light up Check light Engine.

It is recommended to replace it in a timely manner. This will reduce the cost of purchasing additional faulty equipment and fuel (gasoline consumption with faulty ignition elements increases significantly).

Visual diagnostics of spark plugs:

The presence of mechanical damage in the form of carbon deposits, breakdowns, etc .;
Checking the gaps between the electrodes. The distance should be within the factory values. For four-cylinder engines, the clearance should be approximately 0.7-0.9 mm.
The presence of molten electrodes. It occurs due to overheating of the power unit, setting the wrong ignition timing, etc.;
Formation of an oily coating on the surface of the spark plug element and electrodes. The rings or valve stem seals may have been damaged.

Differences in spark plug types

Candles are distinguished by:

The number of electrodes;
The material that was used in the manufacture;
Heat number.

Budgetary standard candle most common. It boasts a small resource. The electrode is made of heat-resistant metal. Over time, signs of wear appear. Low cost allows them to be changed periodically, without thinking about quality.

Multi-electrode plugs... They have several side electrodes. The resource of such parts is significantly increased.

Pros of multi-electrode:

The spark appears at the right moment;
The fuel burns out without residue;
You can use a lean mixture;
Minimizing the release of hazardous waste into the atmosphere.

Platinum and iridium candles ... They appeared not so long ago.

Properties:

The central electrode is up to 0.7 mm thick;
The lateral electrode is pointed and has a special profile.

Benefits of Platinum and Iridium Candles:

Long service life;
Self-cleaning effect.

How to independently change spark plugs in Daewoo Naxia?

Before starting the procedure for replacing candles on a Daewoo Nexia 16 valves, you need to prepare. You will need to study safety techniques and select the necessary tools that you will need for work.

Safety regulations:

The vehicle must be de-energized. Disconnect the negative terminal of the battery.
You need to work with gloves. This will eliminate the likelihood of burns and protect against minor injuries: accidental scratches and small blows.
The procedure should be carried out only after the engine has cooled down. After driving, you must wait up to one hour for the engine temperature to drop to acceptable values. note: The spark plugs are very hot. Be careful.

Required tools and materials:

Candle wrench;
Screwdriver;
New ignition elements;
Clean rags;
Brush for cleaning dirt from the surface of the spark plug element.

Step-by-step instructions for replacing candles:

Open the hood.
Dismantle the spark plug tips. Do not pull or pull the wires. They can break off.
Remove ignition elements. Place next to cylinders. By the amount of carbon deposits on the candles, a problem cylinder can be identified. Please note that loosening may cause problems. As a result, the threads can be damaged. We'll have to start the power unit, warm it up and try to unscrew the ignition elements again.
When installing new parts, remember that cold parts cannot be screwed into hot engine... In the future, it will be impossible to unscrew.
The tightening torque is 20 Nm. The force can be determined using a torque wrench.
Collect everything in reverse order.

The procedure for replacing spark plugs in Daewoo Nexia 16 cl is completed.

Selection of candles for an 8-valve engine Daewoo Nexia can only be carried out according to the manufacturer's instructions. Nevertheless, a thoughtless purchase of a seemingly similar candle in the nearest store can turn out to be not only a waste of nerves in case of refusal to start with minimal frost, but it can also negatively affect both fuel consumption and the dynamics of the car. Let's understand this issue in more detail.

The manufacturer chooses the parameters of the spark plug based on the parameters of the combustion chamber - pressure, type of gasoline and operating temperature.

In the specific conditions of the combustion chamber of the 8-valve SONS engine, it is very important to select the required glow plug number. This is a conditional parameter characterizing the pressure at which the mixture self-ignites, without a spark. Western companies are slowly moving away from this parameter, conventionally dividing candles into hot and cold ones. Cold candles are screwed into forced sports engines and the hot ones go to everyone else gasoline engines working without extreme loads.

Marking

Daewoo unconditionally recommends using a candle in the 8-valve SONS engine NGK R BPR6E(Catalogue number 94837756 ). A worthy alternative is the Champion candle RN9YC... To understand what's what, let's take a closer look at the marking of these candles. And at the same time, we will select worthy replacements, according to the stated parameters. By NGK marking:

BP- the diameter of the threaded part is 14 mm, the size of the wrench is 21 mm;
R- a resistance is built into the candle to suppress radio interference;
6 - glow number;
E- length of the threaded part - 19 mm.

The gap between the electrodes in this candle is not indicated (it is indicated last), therefore, it should be standard - 0.7-0.8 mm.

Champion RN9YC

Original spark plug Champion RN9YC for 8-valve Daewoo Nexia.

Standard Champion RN9YC marking means the following:

R- built-in resistance;
N- thread diameter 14 mm, turnkey 21 mm;
9 - glow number;
Y- the heat-dissipating cone protrudes beyond the body;
FROM- core coating material - copper.

Condition of "champion" candles after 14,000 km of run.

Nickel and iridium candles, is it worth it?

In addition to the standard ones, there are candles on sale with nickel or iridium plating or with electrodes made of iridium alloys, there are also more expensive ones made of gold and silver alloys.

In principle, such candles should last an order of magnitude longer than standard ones. If the classic candle requires replacement after 50-60 thousand, then the iridium one can leave both 100 and 120 thousand km. Summing up, let's say that the candle can be even made of platinum, but its glow number must be within the limits allowed by the manufacturer (6-9). Easy launches for everyone and a stable spark!

Video about how iridium candles differ from ordinary ones

At first glance, a rather unsophisticated detail, a spark plug. But not only the stability of the engine depends on it, but also the economy, and the dynamics, and the quality of the start. That is why it is not just not recommended to screw anything horrible into the cylinder head, it is dangerous. An incorrectly selected spark plug can lead to detonation processes in the combustion chamber, which, in turn, will sooner or later begin to destroy the engine. To prevent this from happening, we will select spark plugs for the 16-valve Daewoo Nexia as correctly as possible.

The well-known yellow box is the NGK BKR6E-11 candle native to Nexia.

Native candles for Nexia 16 valves are no different in design from hundreds and thousands of other candles.

The candle has only five elements:

Contact terminal for supplying high voltage current.
Insulator. It is needed not only for electrical insulation, it insulates outer part a candle that gets very hot during operation.
The corrugated section of the insulator simply holds the cap of the high voltage wire.
Threaded part and electrodes, between which a spark jumps.
The sealing washer prevents gases from the combustion chamber from breaking out.

The internal structure of the spark plug.

Despite its rather simple design, the spark plug has mass of characteristics affecting sparking, its intensity and quality... First of all, this is the material from which the electrodes are made, and the most important parameter candles - glow number.

Heat number

The heat number is not even a coefficient, but a certain unit that depends on the pressure in the combustion chamber, the type and brand of gasoline, and temperature. It is clear that all these indicators are different for each motor. They also differ in Daewoo Nexia for 16 and 8-valve engines. For some time, foreign manufacturers have abandoned the specific calculation of the glow number. Now candles are conventionally divided into hot and cold. Cold ones are used on highly accelerated powerful and revving engines, and hot ones on ordinary civil ones.

Candle marking

Standard designations of candles from NGK.

In addition, there are markings on each candle. Using the example of a standard spark plug for a 16-valve Nexia engine, we will understand the designations.

At the factory, plugs are installed in the engine. NGK BKR6E-11(catalog number 96130723), where:

VK - the diameter of the thread of the candle is 14 mm, and the size of the hexagon is 16 mm;
R- a resistance is built into the candle to suppress radio interference;
6 - glow number;
E- the threaded part is 19 mm long;
11 - the gap between the electrodes.

Other candles for the 16-valve Nexia engine

Based on the data of the native candle, you can find a replacement for it. For example, a Champion RN9YC plug is suitable for a 16 valve car. Champion markings are similar to NGK markings:

R- a resistance is built into the candle to suppress radio interference;
N- the diameter of the threaded part is 14 mm, for a turnkey of 16 mm;
9 - glow number;
Y- a heat-dissipating insulator protrudes beyond the end of the case;
FROM- central electrode with copper coating.

AU17DVRM-10 - candles of the budgetary category of Russian production.

conclusions

In addition to these candles, they showed themselves well AC Delco FR2LS , Champion RC12YC5 and a domestic very inexpensive analogue AU17DVRM-10... Good luck to everyone and a stable spark at any time of the year!