What candles are suitable for Daewoo Nexia. Replacing the Daewoo Nexia spark plugs. How to change spark plugs yourself on a Daewoo Nexia car

Nexia worries every car owner, since they are consumables that are technical regulations models must be changed every 10,000 km. Moreover, their selection should be treated with full responsibility. A candle bought without taking into account the manufacturer's instructions often turns into the very "pig in a poke", which leads to unpleasant consequences. It becomes the main reason for poor engine start at the slightest frost, leads to an increase in fuel consumption, and negatively affects the dynamics of the car.

What candles are optimal for Daewoo Nexia 8 valves, the manufacturer suggests. "Native" for a machine with a SONS motor coming off the assembly line are products made by the famous Japanese company NGK. The main advantage of the products of the luminary, who has dominated the spark plug market since 1936, is the maximum compliance of the plug parameters with the main characteristics of the combustion chamber. Which include:

• working temperature;
• pressure;
• type of gasoline.

Therefore, when choosing a plug for a service replacement, first of all, you should pay attention to the marking.

Heat number and electrode gap, which are constantly at high temperatures and pressures, are the most important indicators of conformity. It is on them that the optimal ignition rate of the mixture and a quick start depend.

Car manufacturer - Daewoo Motor Corporation strongly recommends a spark plug for the SONS 8-valve engine. ignition NGK R BPR6E with original number 94837756. This is a safe bet for gasoline engines operating normally without overloads.

The decoding of the letters BPR6E reads:

• ВР - the thread diameter is 14 mm, the size of the hex key is 21 mm.
• R - means that the candle is equipped with a radio interference suppression system.
• 6 is the magic number.
• E - shows that the length of the threaded part is 19 mm.

The absence in the marking of the parameter of the distance between the electrodes implies that the gap meets the brand standard and is equal to 0.7-0.8 mm.

What other candles can I put on Daewoo Nexia?

Devices for ignition of the Champion RN9YC mixture, produced by the American concern of the same name, are an excellent replacement for NGK R BPR6E and come under the same number 94837756. And although they have some differences in marking, in fact, they are the same NGK:

• N - indicates the same thread diameter and key size - 14 mm and 21 mm;
• 9 - the value of the glow number;
• Y and C - emphasize the characteristic features of the brand. Y indicates that the protrusion of the spark plug insulator extends beyond the housing. C - that its core is covered with copper.

Many owners of Daewoo Nexia with an 8-valve engine also choose the eminent spark plugs German manufacturer BOSCH. There is no need to doubt their quality. They are very similar to the Champion RC9YC. The only difference between the brands is the glow number, which in BOSCH candles is 7 units.

Iridium or Nickel? Which candle to buy?

As for the question of which candles are better to buy for Daewoo Nexia, iridium or ordinary, this is an individual choice of each driver. The progressive iridium candle lasts longer, needs to be replaced less often, but its cost is much higher than the regular one. Every innovation, like a medal, has two sides. But whatever the candle, nickel or iridium, the same requirement is put forward to it: the glow number should be in the range of 6-9 units.

Everyone chooses everything in this life for himself. Choose, buy the best candles for your pet and travel with pleasure! A steady spark and an easy start!

Spark plug - important element v smooth operation engine. It performs the function of igniting the air-fuel mixture, which is carried out in the combustion chamber of the engine.

As a rule, the number of candles installed on a car is equal to the number of cylinders in the engine block, but there are cars with a large number of candles.

If problems arise with the spark plugs, then all further engine operation may suffer, which can lead to the failure of even one spark plug.

When to change candles

In operating instructions and service books for cars Daewoo nexia the plug replacement interval is defined at 30,000 km, but this figure is relative.

If an uneven engine operation is detected, the spark plugs should be replaced immediately. As the practice of using Daewoo Nexia cars shows, it is best to replace the spark plugs when the car reaches 15,000 km, even if you are using original production spark plugs. And, try not to delay replacing candles.

The spark plug is capable of withstanding very high loads. Don't forget about the quality of the candles, good candles cannot be cheap. In case of malfunctions of the spark plugs, a "Check Engine" error may appear. With timely replacement, fuel and cost savings increase.

Control period for replacing candles

The maintenance plan provides for the replacement of spark plugs every 30,000 km. This figure is quite real and should not be increased. It is necessary to constantly monitor and control the state of the ignition system, this, first of all, will concern cars with a catalytic converter installed.

It is worth paying attention to appearance and the condition of the removed candles, carbon deposits on them can tell you a lot. If you remove the spark plugs for inspection or inspection, you should not manually clean them before replacing them, this threatens to damage the insulating layer on the middle spark plug electrode. Although, you can easily check the size of the gap between the electrodes.

How to change spark plugs on a Daewoo Nexia car yourself?

1. Carefully remove the spark plugs from the contact pins. Do not jerk or pull on the wires.
2. Unscrew the spark plugs and position them next to the cylinders in the order they were removed. Thus, by the state in which the candle is located, you can understand to which cylinder the problem will belong.
3. Difficulties may arise when unscrewing the candles, you should not use force, this can damage the thread on the head, you can simply rip it off.
4. Start the engine and warm it up, then you can start unscrewing the spark plugs.
5. When you install new spark plugs, remember that you cannot screw cold spark plugs into a hot engine; you simply don’t unscrew them the next time you need them.
6. The tightening torque of the spark plugs is 20 Nm.This action is carried out using a torque wrench, but if it is not there, then screw the spark plug by hand until it adjoins the O-ring, while the spark plug can no longer be turned by hand or with a spark plug wrench without using this force. When installing a new set of spark plugs, tighten an additional quarter turn using candle wrench... When installing old candles, a 15-degree turn of the key will be sufficient.

What can carbon deposits tell about?

How the spark plug looks like will help you determine how optimal the engine is. To begin with, you need to warm up the engine well on a slightly busy highway.

If you make control measurements after short distances, then, most likely, conclusions will not be entirely correct. Consider the insulator tip of the electrode cone.

• The insulator is painted gray or brown. This will be typical for an economically running engine and will mean that the injection system is perfectly tuned.
• Lots of deposits. Additives will be the main reason engine oil or fuel. In addition, it can be caused by increased consumption engine oil. The solution to the problem is to change the brand of oil or fuel.
• Black deposits similar to soot. Indicates an incorrect selection of the potassium number. Another reason may be making frequent trips over short distances, while the candle does not reach the temperature level for self-cleaning.
• The insulator is colored brown. This could be the result of an early ignition timing. This is possible if the knock sensor fails or the electronic control of the ignition timing is not functioning correctly.
• Reflow of electrodes. There are quite a few characteristic reasons for this: overheating of the engine or injectors, potash ignition, due to an incorrect and out-of-order ignition timing, a malfunction of the combustion knock sensor.
• Damage to the insulator cone, e.g. cracks. This can be the result of detonating combustion from low-quality fuel poured, incorrect ignition timing, malfunctioning knock sensor, poor engine cooling or a lean mixture when excess air enters it.
• Oily coating on the surface of the candle and its electrodes. Possible damage piston rings, valve guides or valve stem seals.
• In the absence of all the signs listed above on the surfaces of the candles, the engine operation is still not stable, there are interruptions and a slow start is characteristic, then the candles may still be to blame. Ceramic insulators can form tiny, invisible cracks, which, during cold start-up, fill with fuel and condensate, which contributes to spark leakage. If the plug is removed and gives a spark, then this does not exclude the failure of its work on the engine.

Clearances allowed between electrodes

Air / fuel mixture The products formed during combustion can corrode metal spark plug electrodes.

In this case, the spark jumps, and metal particles are pulled out by high voltage, while increasing the gaps between the electrodes during operation.

Permissible level of indicators between the spark plug electrodes:

• For engines with 4-5 cylinders: 0.7-0.9 mm;
• For engines with 6 cylinders: 0.9-1.1 mm.

Good to know

If the candle does not turn out well or does not screw in properly, apply a small amount of copper grease or graphite sharpened from a soft pencil to its threads.

Using oil or regular grease can cause the spark plugs to stick to the threads on the cylinder head.

If a defect is found on the spark plug thread, you can use the services of a workshop that will manufacture and install the threaded bushing.

At first glance, a rather unsophisticated detail, a spark plug. But not only the stability of the engine's operation depends on it, but also the efficiency, and dynamics, and the quality of the start. That is why it is not just not recommended to screw anything 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:

1. Contact terminal for supplying high voltage current.
2. Insulator. It is needed not only for electrical insulation, it insulates the outer part of the candle, which gets very hot during operation.
3. The corrugated section of the insulator simply holds the cap of the high voltage wire.
4. Threaded part and electrodes, between which a spark jumps.
5. 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 of the candle is the 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, let's figure out the designations.

At the factory, spark 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 14mm, for a turnkey of 16 mm;
• 9 - glow number;
• Y- a heat-dissipating insulator protrudes beyond the end of the case;
• WITH- copper-plated central electrode.

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!

Video on how to replace candles on Daewoo Nexia 16 valves