We find out what gap should be on the spark plugs of the injection VAZ 2114

All gasoline engines use spark plugs to ignite the fuel mixture, and the VAZ 2110 is no exception. Good and serviceable spark plugs are the key to reliable and stable operation of the car’s power plant. The choice of spark plugs for the VAZ 2110 must be approached wisely, and before installation, the correct gap between the electrodes must be set, but not many people know the necessary parameters for selecting spark plugs and setting the gap.

This article will talk about spark plugs for the domestic “ten”, and specifically talk about their service life, independent replacement, setting the gap and selecting the optimal spark plugs for a given engine.

Candle design

Spark plugs are made of the same type, but often include different components, which allows you to change the technical characteristics of the spark plugs, but in general the elements included in the spark plug remain unchanged.

The candle consists of:

• The contact through which the wire and spark plug are connected;
• An insulator that allows you to maintain voltage from the ignition module without breakdown, and also protects the spark plug from overheating;
• Electrodes, central and side, between these two electrodes a spark occurs, igniting the fuel mixture;
• A ring that contracts, sealing the combustion chamber;
• Threads necessary for reliable fixation of the spark plug in the cylinder head;

Advice on choosing candles and how to spot a fake

“Which plugs ?” It was not necessary, because only the internal one was on sale and the only model that was on the car. Now store shelves are filled with a huge selection of candles from all foreign manufacturers. This naturally gave impetus to scammers to falsify them, the price does not correspond to the quality, so pay attention to the following:

• In order not to succumb to counterfeiting, pay attention first to the packaging, the quality of printing from branded manufacturers is excellent, and for counterfeiting the contours of the drawings
• If packaging is not available at all, then further verification makes no sense; marking candles without packaging are not produced
• Next we'll look at the spark plugs themselves.
• Their central electrode must have an absolute cylindrical shape and the surface of the electrode must be smooth
• When there are defects on the electrode, or the electrode itself is installed crookedly. you know, this is a 100% fake
• In the case of a fake candle, the sides are crooked and have slanted faces. The thread of branded candles is produced using knurling, it is absolutely absolutely smooth
• The fake has small chips because it is produced by cutting
• O-ring cannot be removed from patented spark plug
• On a fake candle, this ring is either unscrewed with a thread or simply removed
• The insulator of the branded candle is shiny and absolutely smooth
• Counterfeits often show longitudinal seams due to inaccurately knitted shapes
• In addition, the inscription on the brand's spark plug insulator is always clear, smooth and precise
• And the last sign. real brand candles cannot be cheap
• Let the low price warn you

This is done with candles, see additional video.

Spark plug gap

For normal operation of a car engine, it is necessary not only to have good and high-quality spark plugs, but also to have a correctly set gap between the electrodes.

The gap between the electrodes is set by bending the side electrode and measuring the distance between the central electrode using a probe.

• For VAZ 2110 injection engines, the gap between the electrodes should be - 1 mm ;
• For VAZ 2110 carburetor engines, the gap between the electrodes should be 0.7 mm ;

Reduced distance between electrodes

If this parameter is less than that recommended for this type of power unit, then the electric arc (spark) will be good, but short. In such a situation, most likely the short arc will not be enough to ignite the fuel-air mixture in the cylinder.

Since the mixture does not ignite, it means that it can flood the electrodes of the spark plug. The consequence of this will be that this cylinder is switched off from operation, that is, the engine will begin to “trouble.” If the gap is significantly smaller than recommended, the following can happen: when the internal combustion engine is running at high speeds, a powerful but short electric arc will not have time to open - there will be a continuous spark. The sad consequence of this may be a short circuit of the ignition coil.

Differences between spark plugs for VAZ 2110

Differences in spark plugs for the VAZ 2110 depend on the type of engine. As you know, several engines were installed in the “top ten”, such as: 8-valve carburetor and injection, 16-valve injection.

For 8-valve engines, spark plugs are installed under a 21 mm spark plug head, and for 16-valve engines, under a 16 mm spark plug head. The smaller diameter of the spark plug hexagon for 16-valve engines is due to the fact that the spark plugs in this engine are installed in wells, which makes it impossible to tighten them with a 21 mm wrench.

How to measure and correct spark plug gap

The gap between the spark plugs can be checked using a special feeler gauge, which has a corresponding plate thickness marking. It should fit a little tight, but not too much. If the probe does not fit through or the gap is too far from ideal, then it is necessary to press the metal part (upper) of the electrode against the graphite one. After this, take measurements again and so on until it is perfect.

Of course, stores usually sell spark plugs with the gap adjusted from the factory. Directly from the manufacturer, it has the article number A17DVRM, the average price is 140 rubles. /PC.

And under article number 2112-3707010-01 (for 16 valves) there is an AU17DVRM spark plug, the average price is 200 rubles. /PC.

Which spark plugs are better for VAZ 2110

AU17DVRM

The original spark plugs for all VAZs are AU17DVRM. These spark plugs from the domestic manufacturer are of excellent quality and have proven themselves well in the market. AU17DVRM are an excellent alternative for replacing spark plugs, as these spark plugs have good spark formation, reliability and durability, and are also not inferior to imported analogues.

NGK No. 11

NGK spark plugs have performed well on the market and are one of the most popular spark plugs for domestic cars. Most Lada owners prefer NGK No. 11 spark plugs. These spark plugs have a long service life and high reliability.

Cleaning

If the spark plugs are dirty, then it is not at all necessary to immediately replace them with new elements of the ignition system, igniting the fuel mixture in the combustion chamber of the VAZ 2110. Regular cleaning will quickly remove the dirt and return the spark plugs to their previous functionality.

There are several common cleaning methods that can be used at service stations and in garages with your own hands.

Regardless of the chosen method, we recommend that you follow the general principles of operation when cleaning the elements of the ignition system.

1. Protect the coating of the spark plugs from abrasion; do not use rough sandpaper or other similar abrasives.
2. Do not expose the candle to high temperatures. It is not worth heating them over a fire for the purpose of cleaning. Some people do this for some reason.
3. Check the spark plug for resistance using a megometer. If the second scale does not show + infinity, then the spark plug will have to be changed. Cleaning is useless. With a value of 1000 it is also better not to try to resuscitate the element.

Now let's talk directly about cleaning methods.

Cleaning before and after

The formation of carbon deposits and flooding will require not only removing and drying the spark plugs, but also thoroughly cleaning them.

• One popular method is to remove carbon deposits with a fine-bristled wire brush;
• Another option is treatment with kerosene, which removes carbon deposits quite effectively;
• Another method involves the use of sandblasting. The effectiveness of this approach is short-term, so you will soon have to remove the candles again and clean them;
• Many people have also gotten used to using chemical converters. To do this, candles are placed in a solution, allowed to sit for about an hour, after which they are cleaned with matches, toothpicks to remove carbon deposits, washed with water and dried;
• In order not to buy specialized products, you can use acetone using the same cleaning principle;
• Our grandfathers cleaned candles with vinegar. To do this, you will need to dip them in vinegar for an hour, then add literally 5 drops of electrolyte;
• There is an ultrasonic cleaning method, but this requires specialized equipment.

If you do not get the desired result, you will have to change the candles. But first they need to be selected.

Signs of faulty spark plugs

Quite often, VAZ 2110 owners are faced with the problem of one of the spark plugs failing. Failure of a spark plug manifests itself with the following symptoms:

• The car's traction disappears;
• One of the cylinders is switched off;
• Engine vibration increases;
• Popping sounds are coming from the exhaust pipe;
• Idle speed becomes much lower than usual;
• The car jerks when driving;

If your car shows such signs of malfunction, you need to check the spark plugs or replace them with new ones.

Signs of incorrect clearance VAZ 2114

A larger or smaller distance leads to rapid wear of the motor. It negatively affects the driving performance of the car. The signs of this problem are usually the following:

• Increased fuel consumption. The car has to be refueled more often than before. At the same time, it may seem that she began to drive better and faster. This indicates an increased spark plug gap;
• Increased car dynamics. The car began to accelerate faster and began to seem more resourceful. At the same time, gasoline consumption is also increasing. This can be seen by sensations and instrument readings. The symptom indicates too much distance;
• Reduced power and dynamics. The car doesn’t seem to be able to pull, it’s getting worse to drive and accelerate. This occurs due to the value of this value being too small;
• The engine is tripping. In this case, the car shakes or the engine shakes. Observed at idle and not only;
• Floating speed. The speed of the power unit is unstable and changes for no apparent reason. This can be seen from the readings on the dashboard;
• Traces of oil in the spark plug well. They can be seen upon examination;
• The engine suddenly stalls at idle and when driving. The engine stops working for an unknown reason;
• Difficulty starting the power unit. It starts very poorly, not the first time. Sometimes the engine may not start at all.

It is not prohibited to operate the machine with incorrect spark plug distance. But driving with such a disadvantage leads to serious damage to the power unit, requiring complex repairs. And driving with this problem is uncomfortable. Therefore, it must be eliminated within a reasonable time.

How to install contactless (electronic) ignition

Installing electronic ignition is the easiest way to improve engine performance. Replacing with a contactless system provides the following advantages:

• Confident cold start;
• Stable engine operation at any speed;
• High reliability;
• Increases the service life of spark plugs;
• Powerful spark;
• No gap adjustment or centrifugal adjuster required.

The finished kit includes a distributor with a Hall sensor, a special ignition coil and a switch. It is possible to leave the old high-voltage wires.

The electronic ignition system includes: an ignition coil, a distributor, a switch and a set of wires

To install contactless ignition to replace the old one, we need a key for “13” and “10”, two screws for fastening the switch and a strobe for adjusting the advance angle.

The order of work performed:

1. We bring the crankshaft pulley to the mark on the engine cover, the piston of the first cylinder should be at TDC.
2. Disconnect the negative terminal of the battery.
3. Remove the cover from the old distributor and note the position of the slider relative to the engine. This will help you quickly install and configure the new distributor.
4. We disconnect the wire coming from the ignition coil, unscrew the lock with a key set to “13” and remove the distributor from the engine block.
5. We install the new distributor according to the marks made, trying to align the marks on the body and the position of the slider. Do not tighten the fastening completely.
6. We replace the ignition coil with a new one and install the switch under the hood. Place the electronic unit in a dry place, away from heated parts. For example, on the wing or engine shield.
7. We connect the wiring according to the diagram in the instructions for the BSZ. We connect high-voltage wires.
8. Close the distributor with the lid and tighten the fastening nut. The system is installed and ready to use. All that remains is to adjust the ignition timing.

Contactless ignition circuit for VAZ 2106

Important! BSZ systems may differ in the length of the distributor shaft for different models of classic Zhiguli engines, so before purchasing it is worth checking with the seller about the interchangeability of components.

Choice

The choice of candles today is quite extensive. But we’ll talk about which ones are used for the VAZ 2110 and what can currently be considered the best choice for your car.

Candles differ from each other mainly in the material from which the electrodes are made.

The service life may increase or decrease depending on the care, conditions of use of the vehicle, and the quality of the fuel being poured.

Platinum candle

Modern technologies

What I want to say in conclusion, many will think “come on,” why should I bother with some distance between the electrodes! Guys, very wrong thoughts.

Firstly , you can save on fuel, studies show up to 5 - 7%

Secondly , smooth engine operation is the key to driving safety.

Third , the correct gap between the spark plugs increases their service life; there is no chance that the insulator will break through (with an increased distance).