When the candles are lit injection engine, then, as a rule, problems arise with its starting. For example, in the evening you returned from work, parked your car and calmly went home.
Morning comes, you need to go to work, but the car refuses to start. And the starter turns, but there are no signs of even attempts to ignite the fuel composition.
Therefore, a modern car enthusiast must be prepared for any surprises and be able to react to them correctly.
By the way, this phenomenon is typical for any of the types fuel systems(carburetor, injection - it doesn’t matter).
In most cases, trouble occurs in winter, when it is frosty outside. In the warm season, fuel filling the spark plugs on the injector occurs much less frequently.
So what to do?
Main reasons
First, let's look at the main reasons for this phenomenon. Surprisingly, the main source of problems in this case is the car’s ECU and the features of its firmware.
When it’s “minus” outside, the system tries to create certain conditions for the fuel mixture. It is no secret that in frosty air the volume of oxygen is much higher.
So it turns out that the ECU sends an order to the injectors to supply a larger volume of fuel.
Naturally, “orders are not discussed” and the injectors increase the amount of gasoline injected.
What's next?
The battery is under enormous stress in the cold and may not deliver required level voltage (and there is no guarantee that it is new).
You turn the ignition key, the injectors deliver the required volume of gasoline into the combustion chamber, and the starter does its best to turn the crankshaft and create a sufficient level of compression in the engine.
At the same time, the candle is also trying to work.
Everything is true, but the quality of domestic fuel is far from being at the best level.
At the same time, in cold conditions (and not even in a new car), it is not always possible to achieve ideal compression.
The injectors have done their job, the spark plugs produce a spark “every once in a while”, and the compression level is too low level. The result is flooded candles.
How to proceed?
If the spark plugs on the injector are flooded, you can go in two ways.
The first one is the simplest. Unscrew the candles and dry them thoroughly. To “drive” the engine, you need to crank the starter for at least 8-12 seconds. Upon completion of the work, you can return the spark plugs to their place and try to start the engine.
Second method. Start in the so-called “purge mode”.
What to do in this case?
Press the accelerator pedal all the way and turn the key in the ignition.
Crank the starter for 8-10 seconds. At the end of this time, the pedal can be returned to its original position.
In most cases, the engine starts.
The peculiarity of this method is that when the gas is pressed fully, the fuel supply to the engine is shut off, and the spark plugs themselves are blown exclusively with air.
If the engine still does not start, then you need to dry the spark plugs.
How to do it?
The tools you can use are a regular toothbrush (or a metal brush) and a hair dryer (for more effective drying).
If you have the opportunity to take the candles home, you can “calcinate” them in the oven or directly on the burners. But this method is only temporary.
If the candles have already expired, then it is better to simply change them.
It happens that almost every day the spark plugs on the injector are filled. In such a situation it is necessary to full check elements - for the presence of a spark output, the cleanliness of the injectors, the quality of the spark, and so on.
How to act to avoid trouble
- firstly, you need to monitor the battery charge level and check it periodically (this is especially true in winter);
- secondly, check the serviceability and if any problems arise, do not be lazy to go for diagnostics;
- thirdly, only best quality, which is suitable for use in winter;
- fourthly, promptly change and inspect high-voltage wires for the fact of their probable failure;
- fifthly, regulate and. This is easy to do - add one of the following to the tank. special compounds, which are sold in stores;
- Sixth, use high quality. To do this, refuel at trusted gas stations.
Remember that in the cold season the engine does not like small trips at low speed.
The car does not start the first time, but on the second and third attempts to start it becomes more and more problematic? In cold winter, after a frosty night, this situation is quite common. And, as a rule, the culprit is not a lack of fuel, a dead battery, or a starter.
The culprits – car spark plugs, designed to generate a spark discharge, which for some reason stopped producing a spark. “Perhaps the candles are flooded?” — neighbors in the parking lot who managed to start the car the first time ask sarcastically. So what does it mean to prime the spark plugs?
Let's consider the process of starting an engine theoretically. The starter starts the car engine. This is an electric motor that spins the engine.
It is he who starts the car engine - the starter
The starter drives the intake valves that feed into the combustion chamber. At this time, the spark plug sends out from the ignition coil high voltage wires a spark that ignites the fuel assembly. It turns out to be a kind of micro-explosion, from which the engine starts, the valve pistons and all other mechanisms and components of the car are set in motion along the chain. If there is a malfunction somewhere in this area, fuel consumption will increase.
Passport data on fuel consumption of Lifan cars
Who gave the candles a “shower”
To start the system normally, you need a working starter, a powerful battery and adequate ambient temperature. But frosty weather with temperatures below -15 degrees cannot be called adequate even for a person who has just left a warm home. It is also too cold for the fuel-air mixture: gasoline does not mix well with air, which contains a lot of oxygen in cold weather.
At a temperature of -30 degrees the mixture refuses to mix at all. And the more oxygen in the air, the more gasoline is required. AND car electronics gives the injectors a command: more fuel! Gasoline enters the combustion chamber, the battery, “on its last legs,” tries to rotate the starter, create compression in the cylinders, and also provide energy to generate a spark and flash to the ignition coils.
Petrol!
If the compression were sufficient, even the weakest spark would be enough, but, as a rule, it is not enough. And the injectors continue to pour gasoline. With each engine revolution, more and more gasoline enters the combustion chamber, and everything around is filled with it. And candles, once “under a gasoline shower,” are no longer capable of producing a spark.
Provocateurs of flooding
Several factors can provoke flooding of candles. These include an extremely worn-out engine: its pistons are not able to create the necessary pressure.
The pistons of this engine from Lifan Smiley could no longer start the engine in cold weather
That's why the engine won't start in the cold. Spark plugs are also filled in cars that have an old carburetor. Although their injection system is considered simple, it is outdated. If the carburetor is not adjusted correctly, it overflows fuel into the chamber and floods the spark plugs in winter. Moreover, if the car does not start, the carburetor continues to supply fuel as if it had started. The carburetor has no sense of proportion.
Carburetor and injection control system
Therefore, before the onset of cold weather, the carburetor needs to be adjusted. Cars with injection system Fuel supplies are also not very polite when it comes to spark plugs. On-board computer in cold weather it gives the injectors a command to supply more fuel to air mixture, but with a weak battery there is also not enough spark to ignite the fuel, as a result the spark plugs are flooded. And although the injector has special sensors monitoring the fuel supply and the engine, the car may still not start. If you can’t start the engine the first time, you need to wait a while and try again.
Poor quality gasoline and oil
Provocateurs of candle flooding are low quality gasoline and oil.
And if the situation with filling spark plugs repeats itself almost every morning, and even in not very cold weather, then you should pay attention to the quality of the spark plugs themselves and the spark plug wires. Experienced motorists, guessing what might happen in winter period time, prepare for it in advance. As a rule, a powerful battery is installed and its charge level needs to be monitored over time.
Weak battery
In winter, a bad (dead) battery will definitely show itself
In cold weather, a weak battery is not able to create the necessary voltage on the engine spark plugs; a weak spark does not ignite the fuel. And if in the summer you can start and drive with a weakly charged battery, then in the winter such a “number” will not work.
Bad fuel
Also, candles are flooded for a reason low quality fuel, therefore it is recommended to refuel at proven gas stations, especially in winter. The candles themselves need to be monitored and, if necessary, new ones purchased.
To prevent candles from flooding in cold weather, it is recommended to adhere to the following sequence: first turn on the low beam headlights for a few seconds. This way the battery will receive a small load. Then you need to turn off the headlights and wait 1 - 2 minutes, try to crank the starter, and then start the engine. If the attempt is unsuccessful, you can repeat it after 5 - 7 minutes. If the battery power is still not enough, then it should be removed and taken to a warm place overnight.
There is always a way out!
Flooded spark plugs, as follows from the above, are one of the most common problems of car owners, especially beginners who have not had to drive their car in winter.
But even inexperienced drivers will find a way out of any situation: the battery can be recharged, the spark plugs can be “blowed out”, cleaned and dried, or bought new ones. Moreover, the cost of candles is low.
Every motorist knows that if the car does not start the first time, it will be much more difficult to do so the second and third time, but not everyone knows that the problem at such moments quite often lies not in a dead battery, but in flooded spark plugs. This article will tell you what floods them, why and what to do in such situations.
Let's decide what this means and why it happens?
It's no secret that the engine internal combustion- a rather complex device in which several sequential processes occur. The first process is the supply of a fuel-air mixture, during which fuel is mixed with air and enters the engine cylinders. The second is the compression of the said mixture by the 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, ignition of the said mixture and the downward movement of the piston. The fourth process is the release of exhaust gases through a piston and valves into the gas exhaust system.
This is how the internal combustion engine operates under normal conditions, but in winter (in the cold) failures may occur in this sequential cycle.
Due to the fact that cold air is much more enriched in oxygen than warm air, a larger volume of fuel is required to ignite it. The ECU knows about this and sends the appropriate command to the injectors. They, in turn, send an upwardly adjusted 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. Taking into account the poor quality of gasoline at our gas stations and the presence of some wear and tear on parts (we are not talking about new cars here, because the compression in them is ideal, so the question is: the spark plugs are flooded, what should I do? – It’s just not worth it), he doesn’t always manage to do it well. As a result, the mixture does not ignite, and the fuel supplied to create a chemical reaction floods the candles, completely paralyzing their work. This can happen for only 2 reasons:
- due to an overly 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 on both a carburetor car and an injector) due to a weak battery, which at low temperatures is simply not able to create the necessary voltage to ignite a spark.
Why do the spark plugs of a VAZ 2109 flood? Since you are reading this article, you know very well that if the spark plugs of a VAZ 2109 car are flooded, the engine will not start. engine because a spark does not occur on a spark plug filled with gasoline.
Reasons for filling candles VAZ 2109:
1) The carburetor float valve needle is stuck.
2) Gasoline level is too high float chamber.
3) Warming up the engine with the choke closed and then trying to start it
stalled engine again with the air damper (choke) closed.
4) The valve timing is incorrect (incorrectly set)
1) The carburetor float valve needle regulates the level of gasoline in the float chamber. The needle can stick in different positions: if it sticks in the closed state, then you will not start the VAZ 2109, since gasoline will not flow into the float chamber. If the needle gets stuck in the fully open state, then the carburetor will begin to pour gasoline into the manifold and cylinders of the VAZ 2109. In this case, the mixture turns out to be over-enriched and, if the suction is completely closed, the spark plugs can be completely flooded.
What to do if the spark plugs are flooded due to a faulty float valve needle? The answer is simple - you need to replace the needle and correctly set the gasoline level in the float chamber of the VAZ 2109 carburetor.
2) If the gasoline level in the float chamber is too high, the needle works properly, but the float mechanism is set so that the gasoline level is too high. The consequences of this are again unpleasant: flooding of candles and too much high consumption gasoline.
Remedy: set correct level gasoline in the carburetor float chamber without replacing the needle.
3) Some comrades warm up the VAZ 2109 carburetor engine as follows:
they start the car with the choke closed, leave it running to warm up, and go home to drink tea. When they drank tea, they came and the car had stalled. They try to start it, but it won't start. It won't start because the spark plugs are filled with gasoline. The mistake that tea drinkers make when warming up the VAZ 2109 carburetor engine is as follows: as the engine warms up, it is necessary to open the throttle valve slightly. As the engine warms up, the combustion conditions of the combustible mixture in the car’s cylinders change; if initially the spark is weak and the cylinder is cold, then as it warms up the spark becomes stronger, the cylinder heats up and the mixture becomes over-rich.
As a result, the engine stalls because the mixture is over-rich. The owner, having drunk tea, comes and sees that the engine has stalled and begins to try to start it with the air damper closed and fills the VAZ 2109 spark plugs. Then he has to unscrew the spark plugs, dry them and start the VAZ 2109 again. How to dry VAZ 2109 spark plugs will be described below.
4) If the timing belt has slipped and the valve timing is disrupted, the engine will not start, or will start and operate incorrectly. That is, the spark will not be supplied at the end of the compression stroke, but later. Wherein flammable mixture will not burn completely. The VAZ 2109 engine does not develop full power, fuel consumption increases.
What to do if you still flooded the spark plugs of the VAZ 2109. You ask: “How can you find out that the spark plugs are flooded?” Take the spark plug wrench and unscrew the first spark plug.
We inspect it, if it is all black, wet and smells of gasoline, it means it has been flooded.
We unscrew all the spark plugs and make sure to mark them so as not to confuse them later.
We go to the gas stove and light the burner, take a candle with pliers and heat it on gas.
After it has cooled, use sandpaper to clean its surface from carbon deposits. If it so happens that there is no place nearby to dry the candles, or even a lighter, then the old-fashioned method remains in such a case. To dry the spark plugs with it, you don’t even need to unscrew them from the engine. We act strictly according to the instructions:
a) Press the gas pedal all the way. That is, we fully open the throttle valve of the VAZ 2109 carburetor.
b) Check that the air damper (choke) is completely open.
c) Without releasing the gas pedal, turn on the ignition and crank the engine with the starter for 5-6 seconds.
d) When you rotate the starter, due to the fully depressed gas pedal and the open air damper (choke), not a combustible mixture enters the cylinders of the VAZ 2109 engine, but only AIR.
In this way we ventilate the candle with fresh air, partially drying it.
d) After drying the spark plugs, take your foot off the gas pedal, close the choke a little and try to start the car. The VAZ 2109 engine should start. You can repeat this procedure several times. As a rule, it helps.
The starter turns, but the car does not start, many motorists begin to look for a problem in the battery. But sometimes that's not the issue. In winter or autumn, when the air is humid or cold, starting the car in the morning can be difficult. real problem. It turns out that quite often the spark plugs flood when starting the engine. Let's figure out why this happens. And how you can fight these.
Why does the candles flood?
Before you begin active actions, you need to understand at least a little what happens to the spark plugs when you turn the key in When the starter begins to move the valves of the engine cylinders, that is, it tries to start the engine, gasoline is mixed with air in the cylinder chamber, after which it ignites from a spark with candles.
Therefore, we can conclude that without a spark, a micro-explosion will not occur in the combustion chamber of the engine, and it will not start. However, at subzero temperatures (-10 and below) or due to the insufficiently high temperature of the mixture of gasoline and air, chemical reactions do not occur and the mixture does not ignite, as a result of which the spark plugs are filled with fuel and stop working. Now let's figure out what to do if the candles are flooded, when transport is needed right now and there is no time to wait for the master to arrive.
We fix the problem ourselves
To with my own hands To fix the problem, you must at least know where the spark plugs are located. There are several solutions. The first is installing a new kit, of course, if you have one. It is advisable not to throw away the old ones, but simply put them in the garage. In order to remove the spark plugs, you will need a special one, which almost every motorist has. However, the method is not suitable for everyone, due to the lack of a new kit.
Now let’s look at a method that involves using old candles. The fact is that they are not spoiled, but simply filled with gasoline, but drying alone is also not enough. Therefore, we will need a furnace in which we can heat the candle to a high temperature and change color to red. This event is carried out in order to get rid of residual fuel and the carbon deposits that have actually formed. But here you need to remember that in this case, firstly, the ceramics of the candle will deteriorate, and secondly, polishing will be required before installation.
What to do if the candles are flooded, or Another solution
This method is used by almost all motorists, due to the high efficiency and simplicity of the method. To do this, we will not need to leave the car, because we will carry out the so-called blowing of the spark plugs. We completely squeeze out the accelerometer (gas) part, while turning the starter, at this time a large amount of air will flow to the cylinders and spark plugs, which is drying. With all this throttle valve must be completely open.
It should be noted that this method is applicable to both injection and carburetor engines. The only thing you need to be wary of is that your battery will not withstand such loads - it will run out before the spark plugs dry. Again, due to the fact that the throttle valve is open to the maximum, gasoline does not flow to the combustion chambers, which is what we need. Now you know what to do if the spark plugs are flooded, but you need to consider the sequence of actions on fuel-injected cars as a separate item.
Problem with spark plugs on injector
You probably know that new cars do not have this problem. This is due to sufficient compression. Of course, the quality of the fuel also plays a role: unfortunately, it is not first-class, it is often diluted, which interferes with the normal ignition of the mixture in the cylinders. Also, dirty injection nozzles prevent normal
In principle, the situation is resolved quite quickly. To do this, remove the spark plugs, dry them, put them back, check the gaps and start the engine. Since injection spark plugs are practically no different from carburetor spark plugs, the process of cleaning them is exactly the same. They can be unscrewed and then cleaned with a wire brush; in this case, heating is not required. But sometimes the carbon deposits are so strong that you can’t do without it. As a rule, a fully charged battery and a fully working starter will allow you to start the engine without any problems.
How to prevent candles from flooding
As noted above, on new cars the question does not arise: what to do if the spark plugs are flooded, since this does not happen. But you can get rid of this on any car, you just need to comply with a number of important requirements. Firstly, you need to use special motor oil that does not thicken at low temperatures, this allows you to start the engine without much effort and stress on the battery and starter.
Secondly, high-quality fuel will not allow your spark plug to burn out. What to do, if good gasoline difficult to find? That's another question. At the very least, you shouldn’t look for gas stations with minimal prices, as you simply risk running into diluted fuel. The injection nozzles should always be adjusted and cleaned, this will have a positive effect on the starting time.
Let's sum it up
In conclusion, I would like to say that the car must be prepared for use in the cold season. To do this, you need to switch the filter from summer mode to winter mode. It is also recommended to fully charge battery, which will make the start easier. As for the candles themselves, it is advisable to always have a spare set with you, because it is unknown where they can be filled and what to do then.
The same applies to motor oil: it must be selected according to the manufacturer’s recommendations. And don’t use synthetics instead mineral oils. I would also like to note that if you are unsuccessful the first time, then it is advisable to wait 20-25 seconds before starting the second. It must be remembered that over-enrichment of the mixture of air and gasoline can happen at any time, even when everything is working properly. But after reading this article, you already know what to do if the spark plugs are flooded, so you will always be prepared for such a problem to arise and eliminate it.
