Ignition coil VAZ 2110 16 valves which one to choose

Ignition module

As mentioned above, the “ten” has 4 engine types: 16 and 8 valve internal combustion engines, as well as with a volume of 1.5 and 1.6 liters. This will lead to differences in the ignition modules. Depending on the installed engine with a certain volume, its own ignition module will be installed.

Differences

The main differences between the modules will be the size and mounting holes. In a 1.5 liter internal combustion engine, the ignition module is larger in size in contrast to the 1.6 liter engine. The cost of the modules depends on the manufacturers, but it should be noted that the MZ from a 1.5 liter engine is always more expensive than a 1.6 liter one.

16 valve MZ

In a 16-valve internal combustion engine, the ignition module is installed on the valve cover near the oil filler neck.

8 valve MZ

The MZ on an 8-valve engine is installed on the front of the cylinder block between the dipstick and the breather.

Device

The ignition module has a common structure regardless of engine size. Inside the switch there are two high-voltage coils and an electronic circuit with many keys.

The coils are designed to switch high voltage and supply it to the spark plug to form a reliable spark in the combustion chamber of the engine.

The ignition module produces a spark in pairs, that is, each of the coils located inside the module is responsible for generating a spark on two cylinders: the first-fourth, the second-third.

Possible causes of failure

The weak point of the ignition coils and modules is the secondary winding, which generates a high voltage pulse. A coil break or breakdown may occur in it. The following factors lead to this phenomenon:

1. use of low-quality or unsuitable candles;
2. operation with non-functioning high voltage wires;
3. frequent attempts to check the spark.

The high-voltage pulse arising in the secondary winding must be realized (spent). If this does not happen (if the integrity of a high voltage wire is broken, for example), a high-energy electrical pulse seeks an outlet. He will find it, with a high degree of probability, in the thin secondary winding.

Often, a module malfunction occurs when the integrity of poor-quality factory soldering of wires going to the switch elements is violated. This happens from vibration. Also, the cause of non-working coils can be a banal contact failure in the incoming connector. Another factor leading to a malfunction of the ignition unit is often moisture that gets on the device during washing or driving in unusual conditions.

Symptoms of a problem

Based on some signs, it can be determined that the culprit of a malfunctioning internal combustion engine is the MZ. Below is a small list of symptoms indicating failure of the MH.

• Failure of two cylinders at once, namely 1-4 or 2-3;
• Increased fuel consumption;
• Detonation at idle speed;
• The engine does not develop power;
• Difficult starting on a hot internal combustion engine;

These signs indicate a malfunction in the ignition system. These signs also apply to other possible breakdowns: spark plugs, wires and even injectors, but first of all you need to pay attention to the MH.

Malfunctions of ignition modules on VAZ-2112

The process of removing the ignition coil on a VAZ 2112
If the VAZ 2112 engine starts running intermittently or does not start at all, the cause of the problem may be the ignition module.

Characteristic symptoms of a malfunction of the ignition module of the VAZ 2110:

• insufficient engine power,
• when accelerating the car jerks,
• either 1 and 4 or 2 and 3 do not work at the same time,
• the engine does not start.

It should be noted that on the VAZ-2112 one of the coils is responsible for the operation of cylinders 1 and 4, the second - for cylinders 2 and 3. If one ignition coil fails inside the monolithic block, two cylinders stop working at once.

To eliminate all other components of the ignition system, make sure that the spark plugs are in working order.

Installation of a new ignition module for VAZ 2112

To do this, unscrew them and check the spark on each of the spark plugs by cranking the engine with the starter and placing the spark plug with the high-voltage wire on the head so that the body (threaded part) of the spark plug touches the engine mass.

If there is no spark or it is weak, replace the spark plug with one that is known to work. If this does not lead to anything, check the high-voltage wires.

Thus, we will exclude spark plugs, caps and high-voltage wires from the list of non-working elements. Next we will check the ignition module.

Module check

After signs similar to failure of the ignition module appear, it must be checked before buying a new one, since its cost is not cheap.

There are three ways to check: substitution, visual inspection and a multimeter.

Substitution

The best and easiest way to check the MZ is to install another known good one from another exactly the same car. After which it will immediately become clear what the matter is and whether the Ministry of Health is to blame for this problem.

Visual inspection

It is necessary to inspect the module for chips, cracks, etc. There should be no damage to it. There should be no moisture or rust on the contact part.

Cost and article

The table below shows the cost of the VAZ 2110 ignition module depending on the manufacturer and VAZ engine size.

Purpose and design of the ignition coil of the VAZ 2112

To create a pulse (spark) between the electrodes of the spark plug of the VAZ 2112 carburetor engine, a “standard”, classic or case coil was used for a non-contact ignition system (BSI), which is a high-voltage pulse step-up transformer with an open or closed magnetic circuit. Its use on “two-wheelers” continued until it was replaced by a two-spark (four-terminal) ignition coil (module) for 8-valve injection engines and an individual coil for power units with 16 valves.

New ignition coil for VAZ 2112

Diagnostics of malfunctions of the VAZ 2112 housing ignition coil for BSZ, nomenclature number 3122.3705 or 8352.12, consists of measuring the resistance of its primary and secondary windings and comparing the obtained data with table values. The resistance of the primary winding of coil 3122.3705 should be 0.43 (±0.04) Ohm, the secondary winding - 4.08 (±0.4) kOhm. The resistance of the coil 8352.12 is respectively 0.42 (±0.05) Ohm and 5 (±1) kOhm. The insulation resistance to ground must be at least 50 MOhm.

If measurement results differ by more than tolerance values, the coil must be replaced. You need the VAZ 2112 ignition coil, with its relatively low price, it is quite reliable and its replacement is rather an exception to the rule.

Ignition module VAZ 2112

The ignition module (four-terminal coil) provides simultaneous sparking in two cylinders (the first and fourth or the second and third). It needs to be checked for serviceability if there is no spark on one or more spark plugs. It is checked using a stand that simulates various engine operating modes and an oscilloscope. Checking “in the field” consists of connecting a known working spark plug one by one to the tips of high-voltage wires, grounding it to ground and, turning the crankshaft with the starter, visually detecting spark formation on the electrodes of the “test” spark plug.

Replacement

Replacement is quite simple and effortless. To replace, you will need a ratchet with an extension and a 10mm socket.

Replacement process

• We remove the negative mark from the battery, since the work is carried out on the electrical equipment of the car. This will avoid an unintentional short circuit in the vehicle's network.

• We remove the high-voltage wires from the MZ and the power connector.

• We unscrew the nuts securing the MZ and dismantle it.

Pay attention to the order in which the wires are connected. Do not confuse them, otherwise the car engine will not start. Cylinder numbering starts from the timing mechanism from left to right. Connect the wires as it is written on the Ministry of Health.

Source

Removing and replacing the ignition coil

In order to replace the module (ignition coil) on a VAZ 2112, you must perform the following steps:

1. Before starting work, be sure to disconnect the battery by disconnecting the “-” terminal from it. (How to de-energize a battery.
2. Then, approaching the ignition coil, disconnect one single high-voltage wire from its central part.

3. Next, use a wrench to remove the two side nuts that hold the ends of the wires in place on the side of the coil.

4. Next, when the nuts are unscrewed, remove both side wires from the coil.

5. And to complete the operation, unscrew the two side nuts securing the ignition coil itself to the bracket.

6. And then remove the coil from the car engine.

Custom ignition coils, which company is better?

On VAZ 2110, 2111 and 2112 cars, IKZ from different companies were installed from the factory. You can distinguish them by the catalog number (article) that is stamped on them. For example:

• 2112-3705010-10 - “BOSCH”, Germany;
• 2112-3705010-11 - NPP "ITELMA", Moscow;
• 2112-3705010-12 - JSC "SOATE", Stary Oskol;
• 2112-3705010-13 - PO "SEVER", Novosibirsk.

Depending on the manufacturer, the price of ignition coils can vary significantly. Imported IKZ for VAZ can now be found for 1500-1800 rubles. Cheaper Russian analogues are 2 times cheaper.

It is worth considering that there are a huge number of fake IKZs . The service life of such products is significantly lower than the original ones. For example, according to reviews from owners, after installing Chinese ignition coils, the “cylinder misfire” error appeared after just a few hundred kilometers. And after the same amount of time they completely failed. An example of how to distinguish original Bosch IKZ from a fake.

How to spot a fake

A few examples of how to visually distinguish original (high-quality) Bosch ignition coils from counterfeits :

• Under the casing of the original, a plastic case is visible (the fake has a metal case).
• There are two stamps on the original casing. They are not present on the fake.
• The outer edge of the original mounting axle box has a protrusion. There is no protrusion on the fake.
• On the fake there is no high voltage symbol (lightning) next to the mounting axle box.
• On the original plug, the font is made more clearly, the surface of the plug is better processed.
• The coding profile of the counterfeit plug is more rounded.
• The fake contacts are noticeably thicker and more rounded.
• The original has traces of casting.
• The factory number on the original is circled in an oval.
• The counterfeit rubber tip does not have a manufacturing date, product type number or logo.
• The extreme turns of the contact spring of the original are wound more tightly.

Other distinctive features with photos are presented in the report, which site users can download:

To download files you need to log in to the site.

Before purchasing new IKZ, make sure that the old ones are faulty (how to check ignition coils). Or maybe try to repair them? Leave reviews about ignition coils and your recommendations in the comments.

Let us remind you that the smooth operation of engines also depends on spark plugs. Do you know which candles are best to choose?

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Before replacing the ignition coils, make sure that they are the cause of the malfunction. To do this, you can check the ICP with a multimeter. Some car enthusiasts are trying to repair IKZ using a heat seal.

buy individual ignition coils in online stores (there is a discount for site users in some stores)

So, let’s vote and leave reviews about individual ignition coils for the VAZ of the tenth family:

• How long did the old IKZ last?
• Which company did you choose?
• Did you change one IKZ or a set at once?

Individual ignition coils for LADA, which company is better?

On some engines of LADA cars (for example, VAZ-21126, 21127, 21129, etc.), the plant installs individual ignition coils (IKZ). Currently, there are a large number of counterfeits of these products on the market. Let's find out what to look for when choosing ignition coils.

The table of applicability of individual ignition coils is compiled according to catalogs of parts and assembly units:

The catalog number of ignition coils installed from the factory indicates its manufacturer:

• 2112-3705010-10 - “BOSCH”, Germany;
• 2112-3705010-11 - "Dynatec" BV, Amsterdam;
• 2112-3705010-12 - JSC "SOATE", Stary Oskol;
• 2112-3705010-13 - “FSUE PO Sever”, Novosibirsk
• 2112-3705010-15 – ELDOR CORPORATION

Do-it-yourself installation of the VAZ 2112 ignition module

1. Having picked up the new coil, first install it in its place by tightening the two nuts that secure it.
2. Then place two wires on the sides of the coil and secure them with retaining nuts.
3. When installing two side wires, pay attention to the markings that are marked on the sides of the ignition coil (see photo below). So this marking indicates which terminal of the coil should be connected to this or that wire. The blue wire must be connected to the “B” marking, and the red wire must be connected to the “K” marking!

4. Then place the high-voltage wire on the central part of the ignition coil.
5. And then install the negative terminal on the battery.

On old ignition coils, as a rule, instead of the letters “B” and “K”, the designations “-” and “+” are used, which means the same thing, but only in signs. The blue wire must be connected to the “-” sign, and the red wire must be connected to the “+” sign!

Original or analogue?

There are more than 10 different manufacturers of ignition coils on the market. Depending on this, the price for IKZ can vary significantly. For example, good imported ignition coils for VAZ engines can now be found for 1500-1800 rubles. Cheaper Russian analogues will be 2 times cheaper.

It is worth considering that a fake part will have a significantly shorter service life than the original part. For example, according to reviews from owners, after installing Chinese ignition coils, the “cylinder misfires” error almost immediately appeared and the engine began to tune up. After 500-1000 km, the ignition coils completely failed.