Which spark plugs are best for Niva 21214

Recently, the automotive market has been replete with different spark plug options. Moreover, many are so advertised that an inexperienced car enthusiast can easily get confused. This article will highlight Chevrolet Niva spark plugs - popular product options, as well as recommendations for replacement and selection.

No one has yet invented standard SZ that are suitable for absolutely all cars, so it is clear that on a Chevrolet Niva you will have to select devices based on two indicators:

heat number;
geometric size.

The first indicator indicates the operating temperature of the product. The higher the value, the colder the product. This means that work can also be done in unfavorable environments where the temperature is elevated.

If the heat value is low, this means that the SZ is hot and will often overheat. If it overheats, it will not last long.

Size plays an important role, that much is clear. If its size is small, the part simply will not screw into the socket and then the electrodes will be at a great distance from the combustion chamber. If the length is longer than necessary, then the electrodes will stick out, and this increases the risk of contact with the piston. When choosing, it is best to use the instructions from the car, which will tell you which spark plugs to install in the Chevrolet Niva. In addition, knowing the exact size, you can choose the best heat rating (video author - VanLe9).

TOP best manufacturers of spark plugs for Shnivy

You can find out which spark plugs are better for a Chevrolet Niva using the list below. Speaking about the best manufacturers, we need to mention BOSCH PLATINUM WR7DPX spark plugs with a gap of 1.1 mm. Due to their popularity, they are copied, so you can find many fakes on the market. If you install such an option in a car, engine performance will noticeably decrease and problems will begin. The catch is that the symptoms do not appear immediately, so identifying a fake is not so easy.

Japanese-made DENSO W20TT devices can be considered popular. They have many advantages, which include good quality, a powerful spark, and therefore reliable engine starting. We can say that they do not have any drawbacks, except for one, but quite significant one - the price.

To purchase this copy, a car enthusiast will have to fork out a lot, considering the cost of other options. The fact that there is a sea of fakes on the automobile market, perhaps, need not be mentioned.

There is another great option - NGK spark plugs. These spark plugs for Niva Chevrolet injector, like the previous ones, are iridium. The key to the success of iridium SZs is that when purchasing them, you can get rid of thoughts about problems with them for a long time. To install iridium and platinum products, unfortunately, you will have to disassemble half of the engine. In return, they reduce acceleration time and increase the rated power of the engine.

So, to summarize, what is good for one engine may be bad for another. But in general, the choice of SZ manufacturers comes down to this list:

BOSCH Platinum;
NGK;
DENSO;
BERU;
BRISK Super.

Conventional spark plugs last 20-30 thousand, and iridium spark plugs last up to 100 thousand km.

The best manufacturers for Chevrolet Niva

If you are about to replace the spark plugs, then you need to know what to put on the injector of your car. Among all the options currently presented on the automotive market, the leader for the Chevrolet Niva can be considered the Bosch Platinum WR7DPX products, which have a gap of 1.1 mm.

Spark plugs Bosch Platinum WR7DPX

Also interesting: Buy tires in the online store

Due to the fact that they are popular, fakes are very common. When installing low-quality spark plugs on a car, its engine will begin to perform noticeably worse, fuel consumption will increase, and problems with the operation of the power unit will begin to appear. It is better to initially purchase high-quality original parts, since over time it will be quite problematic to detect a fake.

The Japanese DENSO W20TT are also very popular. They have numerous advantages:

excellent quality;
presence of a powerful spark;
stable engine start.

Another great option is NGK spare parts. The main feature of this and the previous version is that they are iridium. The advantage of using them is a longer service life. They do not need to be replaced for 100 thousand kilometers. Also, when installing iridium analogues, the rated power of the power unit increases and the acceleration dynamics increase.

Spark plugs DENSO W20TT

Of course, if spark plugs provide benefits on one engine, they may have a negative effect on another. That is why it is important to select them taking into account the characteristics of a particular vehicle and the recommendations of the vehicle’s operating manual.

The service life of conventional spark plugs ranges from 20 to 30 thousand kilometers. It is very important to replace them regularly and not drive them for more than the allotted time. Otherwise, this may result in negative consequences for the system - lead to failure of high-voltage wires and the ignition coil.

NGK spark plugs

Japanese-made DENSO W20TT devices can be considered popular. They have many advantages, which include good quality, a powerful spark, and therefore reliable engine starting. We can say that they do not have any drawbacks, except for one, but quite significant one - the price. To purchase this copy, a car enthusiast will have to fork out a lot, considering the cost of other options. The fact that there is a sea of fakes on the automobile market, perhaps, need not be mentioned.

So, to summarize, what is good for one engine may be bad for another.

A little about the manufacturers. I can name several companies that produce spark plugs for Chevrolet Niva and Niva. These are Champion, Eyquem, Beru, Denso, Valeo, NGK. A few words about NGK. I used the products of this manufacturer for a long time until “small” problems began. A new set of spark plugs was installed on the car, and after a couple of thousand, one spark plug would “fly out” and the engines would start to stall.

So I bring candles not only for myself, but also for several diagnostic companies, statistics have appeared, this phenomenon has become common. Without being lazy, I sent several sets to the Moscow representative office. They diplomatically answered me: I’m a fool, the candles are tightened with the wrong tightening torque. Well, they sent it nicely)) Having waited until NGK held a seminar in Russia, I went and laid out everything to the “real Japanese”.

Having made a thousand Japanese apologies, in a private conversation, he said that for the sake of competitive prices, the production of the cheap segment of candles was transferred to other factories. But the percentage of defects is within normal limits and sellers and services need not worry. And if something happens, then send the defect to the representative office for examination. The circle is closed. Since 2011, I began working with products from German manufacturers Bosch and Beru.

You can find out which spark plugs are better for the Niva Chevrolet using the list below. Speaking about the best manufacturers, we need to mention BOSCH PLATINUM WR7DPX spark plugs with a gap of 1.1 mm. Due to their popularity, they are copied, so you can find many fakes on the market. If you install such an option in a car, engine performance will noticeably decrease and problems will begin. The catch is that the symptoms do not appear immediately, so identifying a fake is not so easy.

BOSCH Platinum;
NGK;
DENSO;
BERU;
BRISK Super.

Expert recommendations

None It is important to consider some differences when choosing a SZ:

EZ A17DVRM consists of Russian-made parts;
APS A17DVRM consist of German-made parts.

To avoid confusion, you should always look closely at the markings. Speaking about the second option, one must also take into account the fact that APS A17DVRM are manufactured using advanced technologies. Among other things, they are distinguished by better processing of the electrodes, and therefore you can avoid problems with a running spark, which is typical for defective devices.

When choosing suitable products, you need to follow some rules:

DENSO IW20 and NGK devices contain a sufficient amount of iridium, which has a beneficial effect on engine life.
BOSCH WR78X parts accommodate four electrodes.
GM WR8DCX are suitable for use in winter and summer. They are preferable to the aforementioned A17.

DIY replacement instructions

To dismantle, first of all you will need a special key for removing the SZ. First you need to remove the ends of the wires from the spark plugs and clean all contacts from dust. The entire spark plug and the area around it must be thoroughly cleaned to prevent debris from getting into the cylinder.

Next, you need to remove the devices with a key and visually diagnose them for damage. You need to inspect both the electrodes and the threads. If there is noticeable darkening on the NW, it’s okay, but if there is no brownish coating, you should be alarmed.

If black plaque is found, it must be removed. It indicates that engine oil has entered the engine cylinder.

When replacing, be sure to check the gap on the new SZ. If it doesn't quite fit, you can carefully bend the electrode on the side. This is a rather risky method, because you need to be as careful as possible and not damage the central electrode. Otherwise, the SZ will fail. After preparing the socket for the SZ, you need to insert it and tighten it with your fingers, and then tighten it with a wrench. Be careful here, otherwise the thread may break.

Let's sum it up

If you study all the reviews, the rating is as follows:

DENSO IW20 - maximum iridium;
BOSCH WR78X - 4 electrodes;
NGK (see above) - high resource;
GM WR8DCX+ is a “winter/summer” option that performs better in winter than A17;
BRISK Super LR15YC (analogue of spark plug A17) or LR17YC (for winter only).

Recently, new brands have been appearing - “E3”, for example. And readers can tell themselves what spark plugs to put on a Chevrolet Niva.

Periodically during operation, it is necessary to carry out maintenance and, if necessary, replace spark plugs on a Niva Chevrolet car. Prepare a standard set of tools and perform the following sequence of actions:

Remove the caps of the high-voltage wires from the spark plugs.
Using a metal brush, we clean the surface of the spark plug and the dirt around it so that it does not get into the cylinder head when unscrewing.
We unscrew the spark plug from the block head.

After removing the spark plug, clean it of dirt and check for mechanical damage, the condition of the threads, whether there are cracks on the insulator, or damage to the electrode.
A working spark plug should have light brown carbon deposits. If the carbon deposits are very weak or completely absent, this indicates a lean mixture or that the spark plug itself is not working, or the spark plug brand does not match the engine type. Shiny black carbon deposits indicate that engine oil is getting into the cylinder, causing soot to form. The brick-red color of the coating indicates that the gasoline used has a lot of anti-knock iron-containing additives; this coating conducts current well and spark breakdown occurs. Spark plugs with a brick-red coating must be replaced.
After the spark plugs have been checked and cleaned, you can begin checking and adjusting the gap between the electrodes. For this, a special round probe is used, which can be purchased at a car store. A gap of 1.00–1.15 mm is considered normal. The adjustment is made by bending the side electrode.

At this point, the repair work on servicing the spark plugs on the Niva Chevrolet car has been completed. Carry out installation in reverse order.

I replaced the spark plugs at the same time after replacing the ignition module. And I bought myself a spark plug key because it wasn’t there. Good luck to all.

Video “Replacing spark plugs in Niva Chevrolet”

Replacing spark plugs in a Niva Chevrolet is fully covered in a video from the Garazhnik channel.

For some reason I always thought that Shnivys were now equipped with Russian-made 17DVRM, but as it turned out everything was better, but this has now become clear in hindsight. In general, the engine was working fine, I changed the spark plugs solely out of peace of mind. It all started with a test that Sergey conducted with bmwservice. To be honest, I couldn’t even think that some spark plug could fail even if it’s new, without mileage (I don’t believe in fakes). By the way, for Shniva, pressure up to 8 atm is critical, it is at this mark that the risk of rejection for apparatus of Soviet times. All of the above is important for highly forced atm. engines or turbocharged/compressor. Our “tractors” are not picky about spark plugs, fuel, or oil... but they don’t run for nothing either :-). As for refractory metals, the issue was closed quite quickly, and its price was closed. Yes, good spark plugs can last 50 - 100k km, but I was simply not ready to give that kind of money, although there is a definite meaning, if you believe ZaRulem’s publications.

Modification of the classic candle from Dudyshev. Good, but the quality of processing is not high.

I also discarded multi-electrode spark plugs quite quickly, since in general they are less “tenacious” at high pressure, and the central electrode is often deeply recessed into the insulator (like Bosch). But there is little point in them - anyway, it is the central electrode that wears out, and not the side ones. Regarding a more effective fire front, I have a hard time believing that this can actually be felt.

Although it is possible to experiment with half of the classic candles and half of the multi-electrode ones, I don’t feel any particular interest in this topic. But it is quite difficult to find a definitely successful needle design of candles in the catalog. This is what I'm talking about:

This design is only effective in platinum or iridium, since such a thin needle will melt very quickly when using softer metals.