Vaz 2110 fills candles. Why are the candles wet? Reasons for constantly flooded candles

15.11.2020

In frosts or cold weather, many are faced with the fact that flooded the candles... This phenomenon is especially common. on cars with high mileage... As a result, the spark plug cannot provide the proper spark to start the car.

Reasons why it floods candles

The candles have served their time. Old candles are unable to produce a powerful spark and thus are unable to ignite the fuel in the desired way. In this case, you need to replace the candles.
Ignition module. Although it is a reliable element, it does not last forever. The price bites him and in order not to waste money and time in vain, replace it with a known good one... If the car starts, then feel free to go to the store for a new part.
Injectors - element fuel system most vulnerable. At high mileage nozzle nozzles clogged and the fuel from them begins not to be sprayed, but simply to pour, thereby flooding the candles. There is only one way out. Remove injectors and carry them to diagnostics.
Coolant sensor. Perhaps the most incomprehensible reason at first glance. Let's figure it out: when the engine is started, this sensor sends a signal to the ECU of the electronic engine control unit. The sensor transmits the coolant temperature to the ECU and he already, based on this reading, determines how much fuel to supply. If the coolant sensor is defective, then it will give incorrect values, and the ecu, in turn, will either not top up or supply an excessive amount of fuel. In either case the car will be difficult to start, and in cold weather when the oil frozen in the crankcase is added to this. This makes starting the engine very difficult.

How to start a car

First of all, do as experienced car owners advise. Press the gas pedal to the floor and turn the starter for 10-15 seconds, then release the gas... The car should start.

If this method did not help, then you need to unscrew the candles and dry them. It is better to ignite on a gas burner or gas stove. Ignite only the part of the candle on which the electrode is located... Then sand the candle as shown in the photo.

Now we go to the car. Do not screw in dry candles right away... To get started, do this: turn the starter for 10-15 seconds, thereby you dry a couple of cylinders. Then try to start the engine.

On my own I can say that the method with calcining helped me.

Of course, these actions must be carried out if you are sure that the battery has the correct voltage e. If the battery is weak, then these methods will hardly help.

If one fine morning you find that your car has difficulty starting, or even the engine refuses to start at all, then most likely your candles are flooded. In this article we will try to answer the question why does it flood candles on VAZ cars, and what to do about it? The solution to this problem is quite simple and lends itself to any car enthusiast.

Causes of faulty spark plugs

Fills candles, most often, during cold weather. Especially noticeable in late autumn. Sometimes it is possible to start the engine, but it runs unstable and for a short period of time. When you try to accelerate it (press the gas pedal), it stalls for a second, and in exhaust pipe a sharp pop is emitted. This phenomenon is dangerous, as it can knock down the ignition timing.

The first thing the driver does in this case is to check the color of the spark plugs. The threads and electrodes are in most cases covered with black carbon and are too wet - all this means that the spark plugs are flooded.

In this case, there is no dependence on what type of engine you have installed (injection or carburetor), the problem manifests itself in the same way in both engines. To determine the source of the trouble, you need to understand how the engine starts.

The process of starting the engine is as follows: the starter spins the flywheel of the crankshaft and sets in motion all the important organs of the engine. These include the camshaft, valves, and at the same time, sparks are generated at the ends of the spark plugs. At this time, the gasoline pump pumps a mixture of gasoline and air, which enters the combustion chamber. At the moment fuel is fed into the chamber, a spark is formed on the spark plug electrodes (at the correct ignition timing), which ignites the mixture and creates a small explosion, which, in turn, moves the piston inside the cylinder.

It becomes clear that if the spark does not appear, then the mixture simply fills the candle, which is no longer able to spark. Ultimately, it becomes covered with a layer of carbon, and the remnants of unburned gasoline explode in the exhaust pipe, forming unpleasant sound, which many motorists are so afraid of. This phenomenon is due to a malfunctioning spark plug, therefore, before looking for the problem elsewhere, you should check for the presence of a spark. To do this, you must use a special gun.

If the candles are working, and the problem of sparking is not solved, then either a module is needed.

Another problem is the composition of the mixture. If much more gasoline enters the combustion chamber than air, then oxidation will not occur. Ultimately, the spark plug is filled with gasoline and is no longer able to ignite the mixture. In this case, you will need to adjust the carburetor. The fuel to oxygen ratio must be within the same range. To do this, turn off or turn the bolts for adjusting the quality and quantity of the mixture.

In injection engines, things are much more complicated. The first problem is. With prolonged operation, their sealing material begins to deform and gasoline, accordingly, enters the combustion chamber even when the engine is stopped. Ultimately, the spark plug is poured and starting the engine becomes quite problematic. The nozzles are subject to elementary replacement.

Video - VAZ injector fills candles

The second problem includes a weak ignition pulse, which is not enough to create the required ignition spark, and poor compression in the cylinders. However, such difficulties can arise when operating a carburetor motor. In this case, the engine undergoes expensive repairs.

Incorrect adjustment of the amount of air and gasoline can also affect the injection engine. Improper operation of the controller, especially in cold weather, leads to the fact that the software does not perform well the computing function and the injector supplies gasoline and air in completely incompatible quantities. As a result, the candles are filled in the same way and lose the ability to further ignite the mixture.

What if the candles are flooded?

If the candles are flooded, and starting the engine is necessary as soon as possible, then you can forget about all the above reasons and start the engine using several methods.

This method is prescribed by many operating instructions. For this, the spark plugs are unscrewed with a suitable wrench and dried. For drying, you can use a regular gas stove. After the candles are dry, they are wiped with a dry cloth, thereby eliminating new carbon deposits and screwed into place.
The second option also came down to us from old carburetor cars. The essence of this method is to dry the candles without dismantling them. The method works the same on both injection and carburetor engines. The gas pedal is squeezed out all the way to the stop, and the engine spins up with the starter for 10 seconds. Thus, the gasoline supply is shut off, and the engine cylinders begin to be blown with one air. During this short time, the candles have time to dry quite well. In the process of blowing it is necessary to release the gas pedal. After this action, the motor can usually be started without problems.
If all else fails, check for a spark. For this, one of the armored wires is pulled out and leans against the cylinder head by 4-5 millimeters. Ask an assistant to turn on the car starter for a short time. If a spark jumps between the wire and of blue color, then the candle is serviceable. However, there are spark plugs that may not work in some particular vehicle type. Try installing new spark plugs. In most cases, this method almost always works. If there is no spark, then the malfunction lies either in the armored wires, or in the Hall sensor, or in the switch itself and the ignition coil.
If the first start of the engine is unsuccessful, then it is necessary to wait for a certain pause. Usually, it is 5-10 minutes. This is done in order to avoid candle flooding. As for carbureted cars, experienced drivers recommend making the first start without closing the throttle. To do this, the car is started without suction and vigorously press the gas pedal to enable it to warm up the combustion chamber. After that, the damper closes, and it is not recommended to touch the gas pedal.

These methods allow you to start the engine only when it is urgently needed. If your vases are flooded with candles quite often, then it is necessary to diagnose the fuel supply system, and, if possible, repair or adjust. Do not tighten under any circumstances, as if there is a non-combustible residue, the oil scraper rings will fail.

That's all. Perhaps, here is listed the whole range of measures that will help you revive and start the engine in cold weather, even with flooded spark plugs. This event is carried out independently, so any driver should know about it.

When the air temperature drops below 15 degrees, motorists often do not start the engine in the morning. There are many reasons why this happens. One of these is the ingress of fuel onto the spark plugs. Moreover, this can happen with both a carburetor and an injection fuel system.To solve this problem, you need to figure out why it floods the candles on the injector and what needs to be done to avoid this. I will talk about this in this article.

Let us first deal with the reasons for flooding the candles on the injector. To do this, consider the operation of a car starter. Thanks to the operation of its pistons and valves, a mixture of gasoline and air is fed into the combustion chamber, which is ignited by the spark generated by the spark plugs. After ignition, the starter is switched off. Thanks to the ignition, the engine's cylinders start to work. To start the engine successfully, you need a good starter, a powerful battery and a favorable ambient temperature.

At low temperatures gasoline does not mix well with air. It is known that the frosty air contains more oxygen. Increasing the oxygen content requires more gasoline. The electronic unit control of the car gives a signal fuel injectors, which provides an increase in fuel supply. Thanks to the starter, compression is created in the cylinders and at the same time a spark is formed for ignition fuel mixture... But since the compression does not meet the standards, and the spark is weak, the incoming gasoline will fill the candles, preventing the mixture from igniting. This is the reason why it floods candles in frost.

The following factors influence the formation of a spark:

Gasoline quality. It should not contain a lot of impurities and dirt, as this affects the operation of the injectors.
Engine wear. If the engine pistons are worn out, they do not create the required pressure and the injector can fill the fuel.
The quality of the candles.
The quality of the injector and carburetor.
Battery power: you should monitor its charging.

If the compression is perfect, the engine will start even with the smallest impulse and the fuel fluid will never fill the injector. But only new car... If a car, for example, such as a VAZ, is more than three years old, gasoline fills the candles on the injector more often.

Solution of the problem

Now I will tell you how to solve the problem when candles are flooded in the frost. The instructions for servicing a VAZ car describe the procedure for pouring candles on a cold one. Recommended:

pull out the spark plugs;
turn the starter without them for 10-15 minutes;
dry the twisted elements;
put in the same place.

What to do to prevent candles from flooding

We have considered the reasons why it floods the candles on the injector. Now we need to figure out what to do in order to forget that gasoline floods candles in frost. To do this, a number of preventive measures should be taken before frosts begin.

First of all, you need to monitor the battery charge level. In winter, it is better to equip the car with more powerful rechargeable batteries... To prevent fuel from filling the injector, the battery must be as charged as possible. Therefore, at night it, if necessary, must be put on recharge.

With the onset of cold weather, special attention should be paid to the quality of gasoline and oil. It is not worth saving on this and it is better to purchase only a high-quality product that meets the season.

Naturally, you need to monitor the health of the spark plugs.
Clean them regularly and replace them in time if they are defective. The piston group also requires attention. It is responsible for creating compression, so when it wears out, the necessary pressure will not be reached to ignite the air-gasoline mixture and the fuel fills the candles on the injector.

If it is freezing outside, then when starting the engine, it is recommended to first load the battery. Then turn it off for a few minutes. Crank the starter motor and start the engine. If the launch has failed, then you need to wait about 10-15 minutes so as not to fill the injector, and repeat the launch. It is necessary to check the serviceability of the car before the onset of cold weather. If all the components work properly, then there will be no problems with starting the motor.

Summing up, the following conditions can be distinguished for optimal operation of the injector:

the starter must be in working order;
the battery is fully charged;
the lubricating fluid must be suitable for the season;
all high voltage wires and spark plugs must be in good condition;
nozzles must be adjusted and kept clean;
use only high quality fuel.

Experienced motorists recommend that for self-cleaning of the engine, go to the track every month and drive the car at a speed of 120 km / h.
Self-cleaning of the engine is due to strong pressure. You can clean the engine by running it in the morning at five thousandth rpm for 10 minutes. The effect is similar to running on a track.

Monitor the condition of your car, then avoid unpleasant situations and save your nerves.

Video “Unexpectedly lit candles. What to do in this case? "

After watching the recording, you will learn how to easily and quickly replace flooded candles with clean ones.

A situation that is quite familiar to many drivers - left the car in the evening - everything was in order, and in the morning the engine completely refuses to start. If this is your first time encountering such a problem, then, naturally, seek advice from a more experienced motorist. The answer in most cases will be strikingly monotonous - "flooded candles" (only if you do not have a diesel engine).
Also, an experienced motorist, whether he is an amateur or a professional, has a “recipe” ready for this case, which is the answer to the question: “what to do if the candles are flooded?”.
In this article, we, in principle, will only repeat what any experienced driver can tell about, but, in addition, we will consider in detail what it means to fill in the candles, why it floods the spark plugs, how to start the car, if the candles are flooded, and how you can avoid it ...

Spark plug diagnostics

Most often, spark plugs are flooded in winter, in severe frosts.

Candles are flooded most often during a cold start, especially in frost. The reason for this is some differences in the mixture formation and ignition of fuel in the cylinders in cold weather, as well as the negative effect of negative temperatures on the general starting conditions.
In order for the combustible mixture to ignite in the cylinder, the following conditions must be met:

good compression in the cylinder;
fast compression of the fuel mixture;
at least the minimum fuel that meets the quality requirements;
enough .

Why is good compression and fast mixture compression important?

The combustion process of the air-fuel mixture in the cylinders

In order for an outbreak of the air-fuel mixture to occur, it must be compressed, and this must be done quickly enough - then the mixture will heat up and will be heated steam, only instead of water it will contain gasoline as moisture. Such a mixture does not settle as a conductive film between the electrodes of the candle, and the spark discharge will not "go to ground", but will ignite the mixture, moreover heated by compression.

Good compression in the cylinder ensures rapid compression and heating of the air-fuel mixture.

In the event that the compression stroke is slow, the pressure in the cylinder will not be sufficient - the compressed gas mixture will be vented through the gaps between the parts. In addition, the heat energy acquired by the mixture will be completely inappropriate for heating the metal parts, and liquid gasoline will be "delivered" to the electrodes of the candle and will flood it safely.
This can be very clearly imagined by a person who at least once pumped the wheels of a bicycle with a pump without a plastic coating on the cylinder. If you pump it intensively, then the pump casing will be very hot, and the proportion of heating it due to the friction of the piston will be only a small part. It is easy to be convinced of this, if you run the pump "idle" - without screwing the hose to the spool - the pump casing will hardly get warmer even after fifty cycles.
So, what is dynamic compression of the mixture for, and how it, combined with good compression, favors the burst of fuel, we have found out.
But do not forget that in cold weather:

battery energy drops;
the engine oil thickens, making it difficult for the starter to crank the crankshaft. The starter starts to consume more energy, which is also needed for a powerful spark.

All this is happening without proper dynamics. It turns out a "vicious circle" - and fills the candles with gasoline.
All of the above can give an unambiguous answer to the question: - "can the candles on the injector be poured in frost?" Of course it can.

Checking the compression in the cylinder with a compressor

There can be several reasons for low compression in the cylinders. When measuring compression, a compression meter is used.

But it happens that the candles are flooded with oil. This is already a separate case - engine repair is required. For initial diagnostics of the engine (not its control systems, namely the timing mechanisms and KShM), you can use a compressometer. Measure the compression - the norm for gasoline engine 12 kg / cm2. If its value is significantly less than 10 kg / cm2, pour 30-50 grams of oil into the plug holes.
If the compression has risen, repair the piston-cylinder pair, and this is already a "capital". In the event that the compression does not rise after oil filling, there is a violation of the tightness of the combustion chambers - a loose fit of the valves to the seats, their burnout, etc. If the values are the same, it is most likely that the valve stem seals on the valve guides are worn out, or the valve stem seals piston rings... The rings, however, can "lie" in the piston grooves.

What to do if the candles are flooded and how to start the car?

Replacing spark plugs

How to understand what flooded the candles? Having unscrewed them from the block head, the electrodes will be covered with moisture. But if the candles are flooded in winter, including on the injector ( injection engine), and there is no desire to “dig” in the engine in the cold, you can “purge” the combustion chambers.

Often, "ventilating" the combustion chambers by starting the engine and pressing the gas pedal is enough to dry out the candles.

If the candles are poured and the car does not start, there is no point in waiting for them to dry out. It is necessary to remove excess fuel from the chambers. The procedure is simple - depress the gas pedal all the way, turn the engine with the starter for 10 seconds, release the pedal and try to start the engine. Cranking the engine with fully open throttle as if "ventilates" the combustion chambers and the spark plug insulators are dried.
But this method is good in cold weather and if the battery is in perfect condition. It would be most reasonable to turn out the candles, wipe and dry them with an open flame - you can on a gas stove. In such a case, of course, it is not bad at all to have a spare kit, even if not new, but workable.
The combustion chambers can also be cleaned by scrolling the motor. With the plugs turned out, the load on the battery is significantly less. Unscrewing the candles is also good because you will not rack your brains trying to figure out what is wrong with the engine - it is flooding the candles with gasoline or something else has happened - for example, the gas pump has failed.

How to avoid such situations in the future?

Checking the electrolyte level in the battery

Now that you know why it floods candles in the cold, you can take some preventive measures in advance.
If the engine of your car is still "alive", then it is not difficult to provide it. You just need:

It is timely preventive measures that avoid the problems associated with flooding spark plugs.

monitor the condition of the battery - top up, if necessary, electrolyte or distilled water, avoid unnecessary load on it, including all electrical equipment unnecessarily. Let's say there is absolutely no need to drive all the time with the heating on rear window... Use low-power running lights instead of dipped beam during daylight hours. Heated seats, besides the fact that "sits" the battery, also can cause illness - use it sparingly. City driving does not allow the generator to recover 100% of the battery;
occasionally drive onto high-speed sections of the road so that the engine can run at high revs - a thick layer of carbon deposits formed on the spark plugs when working on low revs or in mode idle move, will burn out and the candles will self-clean;
fill in engine oil according to the season;
before the onset of the cold season, carry out a kind of prevention -, high-voltage wires, battery maintenance. Taking care of the cleanliness of the fuel tank and replacing the fuel filter will not be superfluous.

About fuel tank it is necessary to explain separately - even if there is no dirt in it as such, no one is insured against condensation. To get rid of it, buy a special fuel additive. The fact is that excessive moisture in the fuel mixture can also contribute to flooding the candles with gasoline.
These fairly simple activities are quite capable of protecting you from unnecessary morning "rush jobs".

Every motorist knows that if the car does not start the first time, it will be much more difficult for it from the second and third times, but not everyone knows that the problem at such minutes often lies not in a dead battery, but in flooded spark plugs. What floods them, why and what to do in such situations, this article will tell.

We define what this means and why is it happening?

It's no secret that the engine internal combustion- a rather complex device in which several sequential processes take place. The first process is the supply of a fuel-air mixture, during which the fuel is mixed with air and enters the engine cylinders. The second is the compression of the named mixture by cylinders, by raising the piston as high as possible with the valves closed. The third is ignition: a spark is supplied to the cylinders, where the fuel-air mixture is under pressure, provoking a mini-explosion, igniting the said mixture and moving the piston downward. The fourth process is the release of exhaust gases through the piston and valves into the gas outlet system.

This is how the internal combustion engine operates under normal conditions, however, in winter (in the cold), malfunctions can occur in this sequential cycle.

Due to the fact that cold air it is much more enriched with oxygen than warm oxygen; it requires a larger volume of fuel to ignite. The ECU knows about this and gives the appropriate command to the injectors. Those, in turn, send the adjusted upward amount of fuel into the combustion chamber, where at this time the starter tries to simultaneously create good compression and give a spark to generate a flash. Given not best quality gasoline at our gas stations and the presence of some wear of parts (we are not talking about new cars here, because the compression in them is ideal, so the question is: the candles are flooded, what to do? – just not worth it), he does not always succeed in doing it well. As a result, the mixture is not flammable, but the fuel supplied to create chemical reaction, floods the candles, completely paralyzing their work. This can happen for only 2 reasons:

due to a too simple and already outdated injection system in carburetor engines, in which there is no measure of fuel supply (even if the car does not start, the system will continue to "pour" gasoline in the amount "prescribed" in the settings), as well as its incorrect settings;
(found both on a carburetor car and on an injector) due to a weak battery, which at low temperatures is simply not able to create the required voltage to ignite a spark.

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