Step-by-step replacement of spark plugs on VAZ 2114 and 2115 cars on your own

Author: Ivan Baranov

Spark plugs for VAZ 2114 and VAZ 2115 are an important element of the ignition system, on which the successful start of the internal combustion engine depends. The article discusses cases when it is necessary to change spark plugs (SZ), which spark plugs to install, and also provides instructions for replacing them on VAZ 2114 and 2115.

[Hide]

When is it time to replace the spark plug?

The operating interval of one set of spark plugs is usually designed for fourteen to twenty thousand kilometers.
Although, the deadlines that manufacturers set are much longer - thirty thousand kilometers. Perhaps such a significant difference in numbers was due to the large number of counterfeit products on the modern auto parts market. And, nevertheless, if you trust the opinion of experienced car owners, then it is better to carry out the replacement procedure early rather than late. What troubles can they bring in used condition:

• Gasoline consumption will increase significantly.
• The cost of operating a car will increase.
• Starting a cold engine will become difficult and take a long time.
• There will be misfires.
• Engine operation will no longer be stable.

Helpful advice: often thrifty drivers put off buying and replacing spark plugs. This is mainly done for reasons of economy. But, as you already know, when they are heavily worn, gasoline consumption increases significantly and visits to the gas station become more frequent. Don't get carried away by the illusion of savings; replace regularly.

If your car has managed to accumulate an impressive mileage on one set of spark plugs, and the car’s traction has begun to weaken, then your VAZ 2114 needs to replace the spark plugs.

Rating of the best spark plugs for injection cars VAZ-2112, 2115

Most manufacturers specify different replacement times for their spark plugs. In principle, the VAZ automobile industry is characterized by a general indicator of 25-30 thousand kilometers of vehicle mileage.

Advice. Of course, if you notice any problems with the operation of your car or the failure of one of the spark plugs with less mileage, then it is advisable to replace this part immediately.

The spark plugs that are installed on the VAZ-2112 and 2115 are almost identical to each other, so we will consider the rating of spark plugs common to both car models. They may differ slightly in their composition, appearance, etc. But their characteristics are the same. We bring to your attention the five most popular manufacturers of spark plugs for injection VAZ-2112 and 2115:

Spark plugs NGK BCPR6ES-11

1. Champion RC9YC. English made candles. Low fuel consumption is observed, they are distinguished by “endurance” and considerable power when the engine operates at high speeds.
2. NGK BCPR6ES-11. They are distinguished by an affordable price and at the same time impressive performance: they are resistant to wear, stabilize engine operation, and are also able to increase its power, provided that the throttle valve is opened “to the maximum.”
3. Brisk DR15YC. An inexpensive model of Czech-made injection spark plugs is perfect for cars driven mostly in urban areas: thanks to the elongated insulator, the spark plug cores quickly and perfectly clean themselves.
4. Bosch FR7DCU. A manufacturer that has proven itself in the best possible way. The design of the spark plugs features a copper central electrode covered with a chromium-nickel shell - this increases its resistance to corrosion and erosion. When tested, Boshev candles show not very high, but fairly stable results.
5. Beru 14FR-7DU. In their design, these candles are very similar to Boshev's: the core is covered with a nickel shell, which makes the candles also resistant to corrosion and erosion processes. And thanks to the conical skirt, the candles clean themselves quite quickly. In addition, spark plugs from Beru differ in one “trick”: they produce a high-power spark - the fuel burns very efficiently and to the maximum.

Is there a difference in brands and manufacturers?

There is a difference and it is significant. Before buying new spark plugs, you should once again look at the car’s operating instructions and check which marking is suitable for your car. On a VAZ 2114, replacement of spark plugs can be from either a domestic or an imported manufacturer. For carburetors with contact ignition, the A17DV spark plug will fit with a gap of 0.5 millimeters. For carburetors with a contactless system, the same is suitable, but with a gap of 0.7 millimeters. For those with injectors, the A17DV-10 at 1.3 millimeters is more suitable.

Angular

When creating an assortment of such models, there are: domestic and foreign approaches. The first type of model (domestic), often called “humpbacked”, has profiles of different sizes on both sides of the tool, such as an open-end wrench. At the same time, the length of the sides hardly differs, and there is simply no passage cavity.

The foreign approach is that keys are made with the same profile sizes on both sides. In this case, the long and short sides of the key are clearly drawn. The short part of the tool in most cases has a through hole, which allows this side to be used for working with fastening joints on long studs. As a rule, working profiles differ in the number of edges; twelve-sided is often used on the short side, and hex-sided on the long side of the key. The picture shows the use of this model in hard-to-reach places.

What you might need

Before you get started, you should stock up on:

• Special spark plug wrench;

Candle key

• A small bottle of compressed air (or a tire compressor instead);

Compressed air cylinder

• Brush for cleaning from burning and dirt;

Wire brush

• Already purchased a set of new spark plugs.

Set of spark plugs for VAZ 2114

Replacement procedure

1. We turn off the engine and be sure to wait until it cools down;
2. Raise the hood lid and fix it in the open position;
3. If your engine capacity is 1.6 liters, then you will have to unscrew the fasteners and remove the plastic cover (owners whose engine capacity is below 1.6 liters do not face this procedure, because they do not have this plastic cover on their car);
4. We pull out the high-voltage wires using the rubber caps;
5. We remove the resulting dirt and carbon deposits with a brush;
6. We unscrew the spark plug by placing a spark plug wrench on it;
7. We repeat the same steps with the remaining old candles;
8. The new spark plug should be inspected again, the gap between its electrodes should be checked;
9. First, we tighten the new part by hand, not with a tool, this will protect the thread from breaking if the installation suddenly turns out to be incorrect;
10. We continue the twisting procedure, but with a tool;
11. We reconnect the high-voltage wires we removed earlier (the explosive contacts should fit snugly in the spark plug).

Attention! A common mistake for novice car enthusiasts. Each spark plug has its own high-voltage wire. Under no circumstances should they be confused. The wire must be connected to the cylinder in series, following the marking rules.

You should not tighten the parts with special frenzy; their threads can be seriously damaged by rough forceful movements.

After replacement

Unpleasant surprises can await car owners even after old ignition parts are replaced with new ones. This can happen if the store sold you a bad, faulty spark plug. In this case, the engine jerks and runs intermittently. Naturally, the defective part must be replaced again. And in order to determine which one is faulty, you will have to disconnect the explosives one by one. When the wire with a faulty spark plug is disconnected, no changes in engine operation are observed.

Replacing spark plugs on a VAZ 2114

What types of spark plug wrenches are there?

To make it easier for the master to decide which spark plug wrench is better, you need to familiarize yourself with all their varieties that are on sale:

1. Articulated
   . This is the most popular device, which is very convenient to use, since the movable connection of the key on hinges allows you to better adapt to the location of the candle. A tubular spark plug wrench carefully dismantles the element and helps install a new one.

2. T-shaped
   . Its design is more rigid than the previous type. And although it also has a hinge, it is installed at a slight angle of inclination. Due to its rigidity and strength, such a spark plug wrench can transmit great forces during operation. Many models are equipped with a magnet that keeps the candle from falling.

3. Tubular
   . This is the simplest and most budget option. There is no hinge in this way, but it is driven by a simple crank that comes with it. The advantage of this device is the presence of two heads that have different diameters. This makes the tubular spark plug wrench more functional and versatile.

Spark plug size

To tighten the candles, use wrenches that differ in thread diameter. There are long and short spark plug keys. Depending on the situation, the master may need keys of the following sizes:

1. 14 and 16 mm
   - they are used for repairing internal combustion engines of modern brands.
2. 19 mm
   – used for motorcycle engines.
3. 20.8 (21 mm)
   - standard key of the old European standard. Used in the repair of engines with two valves per cylinder. This model is useful for any Soviet passenger cars.
4. 22 mm
   - used to replace old spark plugs on ZIS and ZIL vehicles.
5. 24 mm
   - keys intended for spark plugs of the M8 brand.

How to extend the life of a candle

The idea of ​​extending the service life of our part seems very attractive. The question is how to do this correctly? Some drivers are confident that if they drive slowly, the spark plug will last them longer. And they are wrong! The spark plugs actually clean themselves, but only when driving fast. At high engine speeds, it is freed from the deposits that have formed.

In addition to high speeds, you can extend their service life by regularly checking the clearance. The latter must be within the limits established by the factory. Final recommendations:

1. Carefully select new replacement spark plugs. They should fit your car as best as possible.
2. In winter, allow the engine to warm up thoroughly before driving.
3. Under no circumstances should candles be flooded.
4. Always have an extra set of new candles with you.

Good luck on the roads!