The best spark plugs for Niva: Spark plug gap, NGK spark plugs

What do candles do?

As you know, a spark plug supplies a spark to the cylinder to ignite the fuel inside the combustion chamber. The spark plug is exposed to enormous temperatures, which of course does not have a favorable effect on its condition, so neglecting to replace spark plugs is highly discouraged and, if possible, it is advisable to change them before winter for easier starting in cold weather.

A worn-out spark plug can cause a lot of trouble, such as a lot of engine tripping, a number of misfires, loss of power and even an increase in fuel consumption.

In this article you will find the answer to the question of which spark plugs are best suitable for the Lada Niva.

Replacing spark plugs

We remove the spare wheel.
Remove the wire tip from the spark plug.

Using a high 21mm socket (or a spark plug wrench), remove the spark plug.

Screw the spark plug into the threaded hole of the cylinder head...

...first baiting it by hand...

...and then tighten it with a spark plug wrench to the prescribed torque. (Tightening torque of spark plugs: 30.67-39.0 N.m (3.13-3.99 kgf.m)

Requirements for modern spark plugs

What should a candle do?

A spark plug has many important tasks: it must ensure combustion, make a reliable cold start possible, and work uninterruptedly throughout its service life. In addition, it must satisfy many precisely defined requirements.

Breakdown resistance. Modern ignition systems produce high voltages - up to 40,000 volts. They should not lead to breakdowns on the insulator.

Breakdown resistance. During the combustion process, fuel and oils produce soot, oil deposits and ash, which are deposited on the electrodes. These particles conduct electricity under certain thermal conditions. However, a short circuit should not occur across the insulator.

Pressure resistance. Periodically, high pressure arises in the combustion chamber, which must be compensated in front of the spark plugs, without losing seal.

Reliable installation. Ceramics must withstand the tightening forces applied to them during installation.

Flame resistant. The insulator leg protruding into the combustion chamber must withstand heating to red heat, as well as chemical changes occurring in the combustion chamber.

Soot resistance. Particles arising in the fuel, which settle on the insulator leg as carbon deposits, should not change the ignition characteristics.

Temperature resistance. The spark plug, heated during operation, is cooled by the sucked-in air-fuel mixture, which is a thermal shock that the insulator must withstand.

Thermal conductivity. The spark plug must conduct the received heat well and quickly to the cylinder head.

Tact - suction. Gas temperature approx. 100 °C, gas pressure 0.3 - 0.6 Bar

Tact - compression. Gas temperature approx. 300-600 °C, gas pressure 8-15 Bar. The mixture shrinks to a small fraction of its former size.

Tact is work. Gas temperature approx. 2000-3000 OS, gas pressure 30 - 50 Bar. Ignition voltage approx. 40000 Volts. The mixture ignites. The combustible gas performs mechanical work on the piston

Tact - release. Gas temperature approx. 800-1000 °C, gas pressure 1 - 5 Bar. Pushing out unburned hydrocarbon

Spark plug electrodes and materials for their execution

They consist mainly of a nickel alloy with a copper core and show good heat dissipation performance and high corrosion resistance.

Silver has high electrical and thermal conductivity with very high chemical resistance.

High-tech material has very good thermal conductivity and high corrosion resistance

The material used as reinforcement shows good resistance to corrosion and burning. Application areas: single platinum (only the central electrode is reinforced) or double platinum (side and central electrodes). Of the 1.3 billion spark plugs supplied annually to the automotive industry, 1/3 are equipped with electrodes made of precious metals.

Video

Spark plug gap on Niva

The gap between the electrodes on the spark plugs is one of the main indicators that directly affects the operation of this engine part. It must be checked every 20-25 thousand km to ensure proper engine operation. The gap can be adjusted if it is out of the normal range or it is better to replace the spark plugs with new ones.

The normal gap on Niva spark plugs is 1.1-1.2 mm.

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.

And also interesting: Niva Chevrolet instrument panel designations. Improving the Chevrolet Niva dashboard

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.

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

Niva Chevrolet

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

spark plugs for the Niva family

Spark plugs for carburetor cars. The factory gap between the electrodes is 0.7 mm. I will not describe all the marketing gimmicks that the manufacturer writes, just high-quality spark plugs that maintain their required engine hours. Frequently asked question: the contact ignition system has been replaced. A distributor with a hall sensor, a switch and a coil from 2108 are installed. What spark plugs should I use? I experimented with this issue several times. I decided for myself: regular carburetor spark plugs with a slightly increased gap, literally by 0.1-0.2 mm. Produced in Germany.
Spark plugs recommended by the manufacturer for 8 valve injectors, including for the Niva-Shniva family. The established gap between the electrodes is 1.1 mm. In the case of these candles, it would be fairer to say “workhorse”. Nothing outstanding, but they work until either diesel fuel is poured into the tank, or the gap increases to 1.5 mm. Bosch located the production of these candles in Russia, which, unlike other manufacturers, had a very positive effect on the price.
A spark plug with a central electrode coated with platinum. Named . I’ll dispel the common myth that you install “platinum” or “iridium” spark plugs and the horn will fly like an airplane. The main advantage of these candles is their RESOURCE. When you install ordinary spark plugs, after 10-15 thousand the gap between the electrodes “goes away” due to the “knocking out” of the central electrode by a spark. According to my observations, with good gasoline, “platinum” spark plugs, without deteriorating their parameters, have a resource of more than 50 thousand km. Produced in Germany.
Multi-contact spark plugs. In this case, four-pin. For a long time I could not clearly explain to clients what the “raisin” of the issue was. I will not repeat the nonsense that is said in stores and markets. The answer came when a batch of candles was sent to Yakutsk, to the same “junior-experimenter” like myself. It was a completely different SUV, but then this was confirmed in our cars. Their main advantage is starting the engine in the morning in very cold conditions. This has led to some of my clients installing "seasonal" candles on their cars. In summer they are ordinary, in winter they are multi-contact. Candles are made in Germany.

To carry out diagnostics, you will need a special wrench for turning it out. Please note that it is better to inspect the spark plugs after the engine has been running for a long time, for example, after a long trip on a country highway. If you have never replaced this small but important part in a Chevy Niva before, follow these simple tips.

A spark plug that produces the right spark

Remove the high-voltage wire tips from the spark plugs.
Clean the part and the area around it so that when turning it out, dirt does not get into the cylinder.
Using a wrench, remove the spark plugs from the cylinder head.
Examine the candles. Based on the degree of carbon deposits, its color and character, you can diagnose the engine and determine whether it is worth changing the part, buying gasoline at another gas station, or whether it is time to repair the cylinder head.
Use a round feeler gauge to check the gap between the electrodes. It should be 1-1.15 mm.
If necessary, bend the side electrode and adjust the gap between the electrodes. Be careful: under no circumstances should the central electrode be bent! This can lead to damage to the insulator and inevitable failure of the spark plug.
Reinstall the candles. To do this, first screw them all the way by hand, and then tighten them with a wrench. Do not overdo it!

Signs that you need to replace spark plugs on a Chevrolet Niva:

The power unit starts with difficulty. Long cranking of the starter is required;
The feeling that the engine is not working at full strength;
The characteristic sound of an engine running on three cylinders;
Increased fuel consumption;
Low power.

Niva's original spark plugs

The Niva is supplied from the factory with domestic spark plugs from the Engel plant, which specializes in the production of automotive spark plugs. The plant installs AU17DVRM brand spark plugs; these plugs have proven themselves well and meet all quality standards and service life.

A large number of analogues of these spark plugs have appeared on the market, which are no worse than factory ones, and sometimes even better. Analogues of candles can be both imported and domestic.

Below is a table of spark plugs suitable for a Niva car from well-known brands such as DENSO, BOSCH and Brisk.

Top 4. DENSO 4604 K20TT

Rating (2021): 4.35

The best combination of price and quality DENSO 4604 are distinguished by impeccable build quality and reliability in operation under heavy loads. The high heat rating (20), coupled with a fair price, demonstrates the best balance of all product characteristics among the presented participants.

Characteristics
Average price: 204 rub.
Country: Japan
Electrode material: nickel
Heat number: 20
Gap: 1.0mm
Resource: 30000 km

One of the best examples of spark plugs for the 1.7 injector installed in the Chevrolet Niva is offered by the Japanese company DENSO. Despite the central electrode made of a nickel alloy (this decision of the developers had a positive effect on the cost), the designers managed to achieve a high heat rating. Thanks to this, the spark plug does not overheat, works reliably at high speeds and long distances, and the optimal gap gives an excellent spark when starting. Installed in Niva Chevrolet, they fully maintain their service life, remaining operational much longer than the replacement interval. The only drawback is that you can buy a fake that imitates the brand.

Advantages and disadvantages

Reliable sparking
Load resistance
Good safety margin

There are fakes on the market

The best candles for Niva

Based on reviews from forums, it has been repeatedly revealed that Nivovody gives their preference to NGK candles. These spark plugs are excellent for the Niva engine and can withstand high temperature loads. NGK spark plugs make it easier to start the engine in cold weather and even reduce fuel consumption due to their structure. The closest to standard spark plugs and suitable in design to the Niva engine will be NGK No. 11 spark plugs.

These spark plugs easily overcome the 30,000 km barrier without any damage.

Candles. What candles are best to use?

Post by Micah » 08 Oct 2010, 23:16

Re: Candles

Post by Therion » 08 Oct 2010, 23:18

Re: Candles

Post by Micah » 08 Oct 2010, 23:21

Re: Candles

Post by hohol007 » 08 Oct 2010, 23:25

Re: Candles

Post by Bladerunner » 08 Oct 2010, 23:27

Connecting front-wheel drive in a Niva is not so much a technical question as it is a philosophical one. (c) Vovchik

Re: Candles

Post by ALK » 08 Oct 2010, 23:37

Re: Candles

Post by Dimych » 09 Oct 2010, 00:02

Re: Candles

Post by Portada » 09 Oct 2010, 00:05

Re: Candles

Post by Dimych » 09 Oct 2010, 00:14

Re: Candles

Post by ALK » 09 Oct 2010, 00:39

Is it okay that zebin means “gasoline” in English? but from candles with the inscription “GAZ” I would run headlong

I will never believe that a “sliding” spark with a serviceable spark plug (without soot or defects) occurs.. Landsberg’s physics textbook

Re: Candles

Post by SHVV » 10 Oct 2010, 00:10

Re: Candles

Post by simbir » 10 Oct 2010, 18:00

Re: Candles

Posted by kayotte » Oct 13, 2010 10:03 am

Expedition vehicle, subframe, ShN clutch, Weber synchronous carb, 31 tires, SRPM, reinforcement. in general, any small tuning.

Re: Candles

Post by Timurych » November 15, 2010, 20:01

What is good for the 1.6 engine?

For the 2111 engine, the balance of forces looks like this:

BOSCH Platinum WR7DPX
"EZ" T17DVRM 1.0 (3 electrodes)
NGK BPR6ES-11
DENSO W20EPR-U11
Ween 121-1370/KMR6C11
BERU 14R-7DUX
BRISK Super LR15YC
Hola BH7CR11
"Citron" A17DVRM

Based on this list, it is impossible to say which spark plugs are best for the Chevrolet Niva. What works best for one 8 valve (1.6) may not work for another (1.7).

The products of the Japanese brand DENSO were popular, but counterfeits began to appear, and now budget DENSO candles are no longer sold at all.