Filled candles: what to do for the driver
To begin with, there are several methods available on how to dry flooded candles. To begin with, in the manual for many cars, it is separately indicated that if the candles on the injection engine are filled with gasoline, then they need to be unscrewed with a spark plug wrench and dried. Then the engine should be cranked with the starter for about 10 seconds with the spark plugs removed. Next, the candles are screwed back in, after which an attempt is made to start the internal combustion engine in normal mode.
If the engine does not start with a purge, then the candles will have to be dried by hand and their condition evaluated. To do this, they need to be unscrewed, after which they are cleaned from carbon deposits. You can use a soft brush (a brush for brushing your teeth) or a metal bristle brush. In the second case, you need to be careful, cleaning is done without effort. Candles are dried with a household or building hair dryer, ignited on a gas burner, and placed in the oven. Next, you need to check the gap between the electrodes, after which you can screw the elements back into the engine. As a result, restarting should take place without difficulty.
We add that many experts recommend not implementing the solutions described above if there is an opportunity to immediately purchase new spark plugs. In simple words, cleaning and calcining leads to the fact that the resource of the candle after such actions is noticeably reduced, the gaps get lost, these elements work worse after cleaning. It turns out that it is more profitable to purchase relatively inexpensive new candles than to clean, dry and then reinstall the old ones. It was also noted that it is advisable to change simple spark plugs from the middle price range every 15-25 thousand kilometers traveled, regardless of their condition and appearance.
It should also be borne in mind that if new or cleaned candles are constantly flooded, then the reason must be looked for separately, and not only to solve the problem by cleaning or change these elements. In this case, the engine needs in-depth diagnostics, the ignition system, injectors, ignition coil, Hall sensor, temperature sensor, etc. are checked.
Why does it flood candles when starting the engine on a cold
Let’s start with the fact that in the warm season, the problem of pouring candles is not so urgent compared to the cold. As a result, it becomes more common for the car to flood candles in frost. The main signs of flooded candles:
- the malfunction manifests itself in such a way that the crankshaft is rotated by the starter, but the engine does not “grab”;
- from the exhaust pipe it smells of gasoline, the smell is distinct at the time the engine is cranked by the starter;
- after unscrewing the candles, the threads and electrodes are in gasoline, there is also a dark carbon deposit at the bottom of the spark plug;
We add that fuel filling occurs regardless of which power system is installed on a particular vehicle (an engine with injection injection or a carburetor version). The only thing, if we compare the injector and the carburetor, fills the candles on the injector in frost a little less often. Also, some features of flooding may differ slightly, taking into account the individual characteristics of a particular power system.
As practice shows, the list of reasons why he pours candles on a cold injector or when a similar problem occurs on a carburetor car includes several main points:
- Low battery charge. In this case, the battery is more than 40-60% discharged. When the outside temperature drops, the battery may not provide sufficient power for normal starter operation and the functioning of the ignition system. As a result, fuel is supplied by the power system to the cylinders, but ignition does not occur and the fuel fills the candles.
- Ignition system malfunctions. Problems can arise both with the spark plugs themselves and with high-voltage wires. If the candles are old, then they may have incorrect gaps, various defects in the body and electrodes. The spark on such candles may be weak or absent. As for high-voltage wires, they can be damaged, contacts fail, etc. Parallel should be checked and other structural elements of the ignition system, which can cause the absence of a spark on the spark plug.
- Poor quality fuel. In winter, the ease of ignition during a cold start is strongly dependent on the purity and total amount of impurities in the fuel. It should also be borne in mind that in winter, condensate can accumulate in the fuel tank, which also gets into gasoline. The combination of such factors leads to the fact that there is a spark on the candles, but the fuel cannot ignite in a timely manner. The result is an inoperative engine and wet plugs.
In practice, it looks like this. For example, on injection engines, the ECU takes into account the outside temperature and engine temperature, the amount of oxygen in the air entering the engine, etc. The control unit sends the appropriate command to the injectors in order to increase the amount of fuel if necessary, that is, enriches the fuel-air mixture for a confident cold start and further stable operation of the power unit (the so-called heating revolutions XX). In accordance with the received signal from the ECU, the injection nozzles inject more fuel.
Now let’s imagine that the engine is no longer new, that is, there is some wear on the CPG. This means that the compression in the cylinders is still within the permissible limits, but not ideal. You can also add to this a slightly dead battery, thickened oil in the engine crankcase and plaque on the spark plugs. It turns out the following:
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- injectors actively supply not the best quality fuel to the cylinders, which also evaporates poorly at low temperatures;
- the starter slowly turns the crankshaft in thickened grease from an undercharged battery;
- in a cold engine, the parts are not expanded from heating, the gaps are increased, the compression is reduced;
- the ignition system generates a weak spark on dirty candles, which is not enough to ignite the fuel-air charge;
Of course, the above example describes a whole host of potential problems. However, in view of the above, it becomes clear that each “link”, even taken separately, can already lead to difficulties during start-up and certain failures. In other words, only problems with the battery or high-voltage wires can be quite enough so that after one or two unsuccessful attempts to start, the driver has already filled the candles in the winter. It turns out that the minimum impulse to ignite the fuel is simply not enough, or there was no spark initially. Separately, we add that if it fills a candle on a cylinder, while only one is problematic, then we should not exclude the possibility of low compression or other problems only in this engine cylinder.
There is a spark, the starter turns normally, but the spark plugs are flooded
Quite often, you can face such a situation when there is a spark, the candles are flooded, while the starter turns the crankshaft well. In such a case, spark plugs may need to be checked separately, since the presence of a spark on them does not mean that the same spark will always be created under pressure. In other words, if there was a spark on the twisted spark plug, then after installation on the motor it may disappear. The reason is the increased pressure in the combustion chamber, which is created during the operation of the internal combustion engine. To find out, you need to carry out diagnostics on a special stand for checking spark plugs, which simulates the operation of these elements, taking into account high pressure (similar to the operation of candles in a combustion chamber).
In parallel, the injectors and ECM sensors themselves may need to be diagnosed. For example, the coolant temperature sensor may send incorrect data to the ECU in the event of a malfunction. In this case, the control unit enriches the mixture and the fuel injectors overflow. In rare cases, the electronic engine control unit itself fails.
Fills spark plugs with engine oil
In addition to the fact that the candles can be filled with gasoline, it is common for the engine to flood the candles with oil, fill a candle in one cylinder with oil, etc. This malfunction occurs both on the injector and on engines with a carburetor.
After unscrewing the candle on the thread, obvious black carbon deposits may or may not be visible, oil can also get out of the well directly onto the threads while unscrewing the candle, etc. In the event that oil is poured into the candles from below, that is, in the cylinder itself, then the compression in the engine should be measured. There is a high probability that the oil scraper rings are badly worn, cracked or stuck. It is also possible that the walls of the cylinders or liners are worn out, the valve stem seals (valve oil seals) fail, the appearance of cracks in the cylinder head, problems with the valve guides and other malfunctions that lead to increased ingress of lubricant into the combustion chamber and oiling of the spark plugs.
Filling spark plugs: how to start the engine
A large number of motorists in the process of operating a vehicle periodically encounter difficulties in starting the power unit. In this case, quite often there are no obvious prerequisites in the form of clearly manifested faults. An unexpected engine failure to start can occur both during a cold start and when trying to start a previously heated internal combustion engine. In such cases, one of the most common reasons why the car engine will not start is that the engine is flooding the spark plugs with gasoline or oil.
In the event that the candles on the injection engine or carburetor unit are flooded, starting the engine will be very difficult or completely impossible. This indicates the presence of certain problems both with the engine itself and with individual elements and systems. In this article we will talk about why the spark plugs are flooded, how to understand what flooded the candles, and also what the driver should do if the car does not start, floods the spark plugs with gasoline or engine oil, etc.
In view of the above, it becomes clear that certain conditions must be created for the normal start and operation of the engine. It is also important to remember that increased demands are made in winter. In an effort to achieve a stable start, novice car enthusiasts often ask which candles they do not fill. You can immediately answer that in case of malfunctions, it will flood any candles, even new ones. This happens regardless of the brand, the condition of the candles themselves, design features, brand, etc.
Please note that gasoline does not flood the spark plugs, you must:
- monitor the battery charge, recharge the battery using a charger;
- the starter must be in good working order, it is not allowed to wedge, slip, etc.;
- the engine must be filled with oil that meets the current operating conditions (viscosity suitable for winter, as well as other parameters);
- the power supply system must be absolutely serviceable, the injector nozzles must be cleaned in a timely manner. For cleaning, it is advisable to resort to more effective methods of cleaning the nozzles with ultrasound, or to rinse the injector on a special flushing stand, and not be limited only by prophylactic additives of various cleaners to the fuel tank;
- it is advisable to refuel fuel only at proven gas stations that have certificates confirming the quality of the fuel;
- regularly check the condition of the spark plugs and high-voltage wires;
In order to prevent carbon formation in a working engine, experts recommend periodically spinning up the power unit to high speeds (about 4500-5000 rpm), after which you need to drive at least 30-50 km in this mode. This is especially shown for cars that are constantly used in urban environments. Factors such as: prolonged work at XX, short trips in low gears, low revs and driving at a low speed, underheating of the engine (the unit does not have time to fully reach the operating temperature) lead to increased accumulation of carbon deposits and engine coking. Increasing the speed and load above the average mark allows for partial cleaning of carbon deposits and deposits in the combustion chamber of the internal combustion engine in a natural way.
How to understand that the candles are flooded
First of all, it is necessary to define the concept of “flooded candles”, that is, what is it? One of the main operating cycles of a gasoline internal combustion engine is the supply of a fuel-air mixture to the combustion chamber and its subsequent ignition. When for some reason the spark plug does not light it, then this is called “flooding the candles”.
And all because there is a large amount of fuel hitting the electrodes and the body of the candle. And the more fuel got there, the more difficult it is to ignite it, although in practice this is almost impossible before drying them.
Most often this happens during the cold season, with significant frosts or simply with cold snaps. As the drivers say, “cold.” During such a period, there is a large load on the battery and if it is weak, then there is always the possibility of flooding the candles. That is, the driver tries to start the car two or three times, while the battery is discharged, and the candles are filled with gasoline.
However, spark plugs can be filled with more than just gasoline. two other process fluids can get on it. engine oil and coolant (antifreeze or antifreeze).
Indirect signs that the candles are filled with engine oil are the following situations:
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- a rapid decrease in the oil level in the engine crankcase;
- unstable engine start, and at any time of the year;
- decrease in the dynamic characteristics of the machine, poor acceleration, drop in power;
- unstable engine idling;
- Engine “tripping”.
It is necessary to understand that the listed signs may indicate other breakdowns in the engine, therefore it is better to unscrew the candle / candles from its seat and visually assess the condition of its electrodes and insulator. over, it is desirable both for the presence of burnt oil and for the general condition. Much can be understood by color.
Similar signs will indicate that the spark plug is filled with coolant (antifreeze). In this case, there will also be a drop in engine power, a rapid drop in the coolant level, the appearance of white carbon deposits on the spark plug electrodes and / or its insulator. You may also notice the appearance of white smoke from the exhaust pipe.
Piston ring wear automatically leads to oil seepage from the crankcase into the combustion chamber. In addition to simple wear, a situation is possible when the ring (rings) simply bursts, which makes it actually unusable. Or it is elementary, here you can try to do decarbonization. When checking the piston rings, it is advisable to check the compression in the engine cylinders.
If the candles are filled with gasoline “cold”, then, most often, the discharged battery is to blame. This can be in different conditions, both in the warm season and in frost. However, this happens more often in winter, because in the cold the battery loses part of its capacity and discharges faster.
With each turn of the key, fuel is injected, but when the spark is weak or absent altogether, such actions fill the candles more and more with fuel. Such a candle is already guaranteed not to give a spark until you dry it.
Fuel with condensate
Condensation (water droplets) forms when the temperature drops. Also, water in gasoline can get into the tank and at the gas station. Water naturally does not burn, and gasoline with such an admixture is poorly flammable. In order to avoid such a situation, fuel dehumidifiers are used in winter and autumn.
Clogged ventilation of the oil system
The VKG system ensures normal oil consumption on a serviceable engine. When it becomes clogged, the pressure of the crankcase gases increases, which leads to the fact that the piston rings will not cope with their tasks, due to which part of the oil will enter the combustion chamber.
Fills the candles with oil
Less often, but also more dangerous when he floods the candles with oil. This is caused by more significant breakdowns of individual engine elements. Oil can enter the cylinders (on the electrode and threads) either through the rings or through the valves. When the candles are in oil from above, then either the o-rings of the wells are leaky, or the valve cover gasket.
When filling candles with antifreeze
Most often, antifreeze appears in the oil due to burnout of the cylinder head gasket or the geometry of the “head” is broken. In this case, you just need to change the gasket and grind the surface, otherwise the problem will not be solved.
If the geometry of the engine cylinder head has been violated, then you need to contact a car service for help. There, with the help of special machines (milling, grinding), the craftsmen will restore its normal shape, in particular, the lower plane.
If the heat exchanger or its gasket is damaged, in most cases it is necessary to replace the indicated elements, since they are practically not subject to restoration.
In rare cases, not only the head, but also the cylinder block itself can change the geometry. This is a rather difficult case, and you need to contact a car service for help with it. There, with the help of special equipment, you can try to restore it. Unfortunately, this is not always possible. Especially if the engine is old, has a high mileage, or is mechanically deformed, for example, due to an accident.
On older cars, antifreeze can get into the oil, and from there into the candles, due to leaking pipes and / or connecting clamps. However, in this case, specific advice cannot be given, since it depends on the design of a particular car and the state of its engine (rubber pipes).
However, the candles are filled with antifreeze. this is the least that will happen in case of such a malfunction.
Symptoms that flood candles
There are direct and indirect indications that the spark plugs are filled with gasoline. So, the main symptoms include the following situations:
- Problematic engine start. The reason for this may be not only the starter, but also other elements of the motor.
- Unstable operation of the engine at idle, most often “cold” when the engine is cold. Also, the starter will turn for a long time before the engine “picks up” the speed.
- Engine “trophy” or its unstable operation in various modes. In this case, a decrease in the dynamic characteristics of the machine may be observed.
- Exhaust gases are black and have a distinct gasoline odor.
If, during this operation of the engine, the spark plugs themselves are unscrewed directly, then most likely they will be wet, since they were flooded with gasoline. By the way, when the engine is often poured into a cold one, dark soot will take place in the lower part of the plug (in the area of the electrodes).
For carburetor engines, the problems listed above, in addition to electronic sensors, are also relevant. However, it also has its own characteristics.
- Incorrect carburetor setting. In particular, starting a cold engine requires a rich air / fuel mixture (that is, a mixture that contains a lot of fuel). However, if it is too enriched, then it will not ignite, or it will not burn completely. Accordingly, in order to avoid such a situation, it is necessary to check the state of the carburetor (cleanliness of its chambers, jets), as well as monitor its setting and the intensity of fuel supply to the chamber.
- Failure of the diaphragm of the triggering device. This diaphragm is necessary for a slight depletion of the fuel-air mixture at the time of starting the engine, including “cold”. Since during a cold start, the air damper closes completely and excludes the air supply, the role of the diaphragm is to slightly open the damper and allow air to flow into the carburetor. However, over time, the diaphragm may crack and fail (stratify, crack), which will lead to the mixture being enriched, and the engine will be difficult to start when cold, or will not start at all, and the candles will be flooded with gasoline. Replacing will solve the problem.
- Incorrect suction operation. Often the owners of carburetor cars are to blame for the fact that the engine is flooding cold candles with gasoline. it is enough to overexpose and if the carburetor is poorly tuned, then some of the candles will be jammed with gasoline.
With any of the problems, the situation can be aggravated by insufficient engine compression or a poorly torque starter, so often there could be more than one reason, namely their combination at the time of start.
How to start the engine if the candles are flooded with gasoline
How to start a gasoline-filled engine
To start the engine after the candles have been filled with a cold one, you need to adhere to the following algorithm:
- Unscrew the candles. After that, they need to be dried and calcined. This can be done at home on a gas stove, or with a burner. In order not to do this, it is recommended to always carry with you another set, albeit not new but working candles.
- Blow out the cylinders. For this, an air compressor should be used whenever possible. But if it is not there, then for drying it is necessary to completely squeeze the gas pedal to the floor, twist for 10 seconds with the starter. At the same time, on the injector, you also need to remove the connectors from the fuel injectors.
- Screw in the candles and put the caps back on, and then try to start the engine again (the drying procedure may need to be repeated several times, but usually two or three times is enough).
Many car enthusiasts point out that this is a working and proven method.
On carburetor machines, the manipulation of the plug caps sometimes helps to start the engine with flooded candles. It is necessary to slightly remove the cap from the candle, that is, not completely, but by a few millimeters (depending on the design of a particular candle). Thanks to this, a spark jumps between the cap and the candle. And the same spark slips at the end of the candle. Thus, the fuel that was filled with the problem plug simply burns out.
To find out which spark plug is being poured, it is necessary to remove the spark plug caps one by one while the engine is running. If the engine, when disconnecting the next cap, began to work even more unstable, then the candle is working. If the engine does not react in any way to the disconnection of the cap, it means that the corresponding plug is flooded.
Why does the engine flood on a cold
To begin with, let’s consider the situation for injection engines, since, firstly, they are more common and have more causes, and secondly, many of the common malfunctions will also be relevant for carburetor engines. After all, what is the main problem? There is no good spark or a lot of fuel. So, he pours candles on a cold injector because:
- Low battery charge. With large leaks of current or a general poor condition of the battery, it can sag heavily during the night inactivity, and, accordingly, not so actively crank the engine. If the starter turns sluggishly, then most likely if the fuel comes in, ignition will not occur. As a result, the candles will be wet. Each unsuccessful attempt will only aggravate the situation, because a new portion of fuel will be supplied, which will fill the candles. Conclusion. keep an eye on the battery charge level, and if it’s winter outside, then when the charge drops by about 15%, you need to additionally recharge the battery using external chargers. And if the battery does not hold a charge, replace it.
- Bad candles. Fills the engine on a cold one if the plugs are old or damaged. For example, they can have a knocked-down gap due to burnout of electrodes or carbon deposits, or a spark breaks through to the body. That is, there will be a weak or no spark on the candle. Accordingly, the fuel will not be able to ignite.
- Malfunctions in the ignition system. A weak spark will be in case of problems with high-voltage wires in case of insulation failure. Also, if the entire ignition module or one of the coils is damaged.
- Bad fuel. When gasoline is of poor quality, the first problem will be the filling of candles on a cold engine, and then tripping and increased consumption may also appear. If such a problem arose precisely during a cold snap, then be sure that there is a high probability that the octane number does not match. In the warm season, low-quality fuel is easier to ignite than when it’s cold outside.
- Defective sensors. In injection engines, the electronic control unit (ECU) is responsible for the amount of fuel supplied, which receives the corresponding signal from a number of sensors. So, for the amount of fuel when starting a cold engine and its operation as a whole, it is regulated by the coolant temperature sensor, the throttle position sensor, the mass air flow sensor and the crankshaft sensor.
Accordingly, if any of them gives incorrect information, then it is very likely that too much fuel will be supplied to the engine cylinders. Which will fill the cold candles. To solve the problem, it is necessary to check the sensors, starting with the coolant sensor, whether he is lying that the engine is very cold and more fuel is needed, as well as the mass air flow sensor, which regulates the amount of air through the damper sensor, supplying it less than necessary. However, if such problems exist, then in addition to the fuel correction data, look for errors in the ECU memory.
Pours candles on a cold one
Fills the spark plugs on a cold one due to malfunctions in the ignition system, incorrect adjustment of the air-fuel mixture by the sensors, the use of poor quality fuel, a slowly rotating starter, reduced compression in one or more engine cylinders.
Usually, the engine pours on cold candles during its unsuccessful start, that is, when the crankshaft is spinning, but the engine cannot “grab” and start.
Find a malfunction and understand why any car owner can fill the candles on a cold one, regardless of whether he has a carburetor or an injector.
If it pours candles on a cold one, then first of all it is necessary to check the battery charge level. Further, if the problem is on the injection motor, then it makes sense to connect a diagnostic device to the ECU and check the memory for errors associated with incorrect operation of the sensors. As for carburetor machines, it is necessary to check the settings and condition of the carburetor itself. You also always need to use quality fuel.
Remember that the elements of the ignition system must always be in good working order. Often there is such a situation when seemingly minor breakdowns in each of the systems result in the fact that candles are poured into the cold.
Causes of malfunction
Due to a flooded candle, the scooter may not start at all or work unstably. So what could be the reason:
- Clogged air filter. Insufficient air supplied to the carburetor enriches the fuel mixture. As a result, a large volume of fuel does not have time to burn in the chamber, and the spark plug becomes dirty.
- Incorrect carburetor adjustment. A screwed-in mixture quality screw on the carburetor has almost the same effect as a clogged air filter.
- Defective ignition system. There are several faults at this point: faulty spark plugs. bad wire. problems with the ignition coil. wrong lead angle (on old equipment, for example).
- Poor quality fuel. Gasoline diluted with another liquid greatly affects the contamination of the spark plug.
Oddly enough, a candle can also be flooded on the injector. This usually happens in the winter on worn out engines. Since the quality of the mixture is regulated by the electronic control unit (ECU), it would seem that candles should not be flooded.
However, poor compression, discharged battery, poor starter, insufficient spark and incorrect electrode gap prevent the scooter from starting in freezing temperatures. In cold weather, the ECU supplies more fuel to the cylinder, since cold air contains more oxygen than hot air.
For a number of reasons described above, the scooter does not start and fills in a candle.
Trying to start the engine
So, we figured out: why is pouring a candle on a scooter. The repair methods below and how to start the engine are applicable to scooters with 2t and 4t engines.
- The method is suitable in the absence of a tool. If you have filled the candle with attempts to start the scooter, let it stand for about 5 minutes. Then turn the throttle knob all the way and turn the engine with the starter for about 10 seconds. You can use the leg several times if the starter is faulty. Release the throttle and try to start the engine again. it should work.
- If you have a candle wrench, you should unscrew the candle and warm it up over a fire, having previously cleaned it of carbon deposits. With the spark plug removed, the cylinder should be “blown out” by rotating the engine with a starter or a foot. Screw in the candle and try to start. If unsuccessful, replace the spark plugs.
Advice! Although the first method is faster, it is still recommended to use the second. Such cleaning of the ignition system will help to avoid such problems for some time.
Eliminate the causes of the malfunction
If, after the performed manipulations, the scooter starts up, this is good, but you should not relax. It is imperative to check for possible faults. What to do to prevent this situation from repeating itself:
- Clean or replace the air filter. You can make sure that the reason for it is simply by trying to start the engine with the filter installed, and without it.
Advice! If the condition of your engine is far from new, then cleaning or even replacing the spark plug should be done more often.
- Adjust the quality of the mixture. Set the carburetor mixture quality screw to the optimal position (where the quality screw is, see this article), clean the carburetor on the moped. If you have a scooter with an injector, keep an eye on the condition of the injectors. Use an injector or carburetor cleaner.
- With a 4-stroke engine, pay attention to the valve adjustments. Incorrect release timing can also cause spark plugs to be dirty.
- The battery must always be well charged and the starter is in good working order. After all, candles are often poured in the winter, and in the cold, a reliable rechargeable battery is required.
- The quality of the oil during the freezing season also affects the success of starting a scooter. The oil must be fresh and of the correct viscosity for your local temperature regime.
Advice from experienced motorcyclists! If it floods a candle, you should load the engine with high revs at least once a week. Thus, the cylinder and spark plug are purged from accumulated carbon deposits.
Why floods a candle on a scooter and how to fix it
Seasoned motorcyclists have faced the problem many times: the candles are filled with fuel! For those who first encountered such difficulties, this article is intended. Together we will find out the cause of such an unpleasant phenomenon, as well as figure out how to fix the problem, methods to prevent re-flooding of candles.
After reading this article, the described problem will no longer be scary for you. Monitor the condition of your vehicle’s components and assemblies, carry out repairs on time, refuel with high-quality fuel, and your scooter will definitely be your reliable companion!
Reasons why fills candles on an injector or carburetor
In principle, the culprit for flooding the injector spark plugs is elementary. And it is in the specifics of the “electronic brain” of your scooter.
At freezing temperatures, mixing the air-fuel mixture requires some effort: more oxygen in cool air urges more fuel. Therefore, the ECU instructs the injector injector to increase the fuel supply, which they do, well.
And the next thing is going on in the motor, especially if your scooter does not already have a new battery. The injectors supply gasoline to the combustion chamber, the starter tries to form sufficient compression in the cylinder, in parallel trying to give a spark to generate a flash. Do not forget about the quality of gasoline, which does not differ in perfect parameters.
As a result, with exemplary compression, the injector spark plugs have every chance of starting at the smallest impulse, but only a new scooter has perfect compression. Practically, therefore, it does not fill the injector spark plugs on a fresh scooter, as a rule.
The spark is weak, the compression in the cold does not meet the characteristics, and the injectors continue to deliver fuel to the combustion chamber. Which, in turn, floods the candles and those that simply stop giving symptoms of an incendiary life.
Why floods a candle on a scooter and what to do
Even if not all, but numerous scooters are faced with a similar problem: the day before he arrived, put the scooter in the garage, everything was fine. Then he started to start the engine, but it does not start.
There can be many reasons for this. However, in this article we will consider the main reason for filling the spark plug with fuel, you have an injector or a carburetor, it does not matter. Fills candles with gasoline regardless of the type of fuel system of the scooter.
It is typical that the spark plugs are flooded with gasoline less often in the warm season, and more often in winter temperatures. So we will try to understand in order: why does it fill the candle in the injector, what to do to start the engine, specifically when the candle is filled in and how to avoid flooding the candles with gasoline.
What to do if the candles are flooded with gasoline
There are 2 options for solving the problem. In a “reasonable” operating book, as a rule, it is written: if the injector plugs are filled with fuel, then it is necessary to unscrew them and dry them. With the spark plugs removed, crank the starter for 10-15 s. Reinsert the spark plugs and start the engine.
Reliable folk method. If your candles are flooded with gasoline, before unscrewing and drying them, try starting the engine with the following method: purge mode.
The throttle handle is completely unscrewed to the floor. Turn the engine with the starter for 10-12 seconds, release the throttle handle. The engine must start. The fact is that in a similar way, closing the fuel supply, you blow the candle with air.
If the engine does not start, then try to dry the candles. Spark plugs for an injector are no different from an engine with a carburetor. Therefore, we again apply the “old” method: we unscrew the candles, clean them from carbon deposits with a brush, dry them or with a hairdryer, or on a gas stove or in an oven. We control the gap and screw the candles into place. The motor should start.
For used scooters, professional advice. to clean candles more often, and even more correctly, to change them.
If the candles are constantly flooded with gasoline, it is necessary to carry out diagnostics: candles for the quality of spark supply, cleanliness of injectors, spark output from the ignition coil, Hall sensor.
Circumstances under which spark plugs will not fill gasoline
Of course, these are exemplary conditions, but many of them, you can check, so as not to meet the morning in a minibus or metro, moving about your business.
So, the key criteria are:
- well-charged battery and working starter
- high quality oil with proper parameters for the frosty season
- spark plugs and high voltage cables of high quality and trouble-free
- the injector nozzles were cleaned and adjusted in time. Preferably not with the help of different additives in the tank, but with the use of equipment for cleaning injectors
- quality gasoline
People’s advice: if you want the engine to start perfectly in cool weather, and the candles are not flooded with fuel, the engine must be periodically, once a month, “twisted”. Distance of 50-100 km at a speed above average and on good fuel.
Or once every two days, while moving for 10 seconds, give the motor a load with increased speed in order for self-cleaning of carbon deposits and deposits in the chamber.
These conditions are easy to control on your own, without the help of car service professionals.
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 a special engine 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 you to flood your candle. What if good gasoline is hard to find? This is another question. At the very least, you should not look for a gas station with minimal prices, so you just run the risk of running into diluted fuel. The injection nozzles must always be adjusted and cleaned, this will affect the start-up time in a positive way.
What if the candles are flooded? Why does it flood candles and what to do about it?
When, when starting the engine, the starter turns and the car does not start, many motorists begin to look for a problem in the battery. But sometimes that’s not the point. In winter or autumn, when the air is humid or cold, starting the car in the morning can be a real problem. It turns out that quite often it floods the candles when starting the engine. Let’s see why this happens. And how can you fight these.
Why does it flood the candles
Before you start taking action, you need to understand at least a little what happens to the candles when you turn the key in the ignition lock. When the starter starts 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 from a candle.
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 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 candles 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 arrival of the master.
Injector spark plug problem
You probably know that new cars don’t have this problem. This is due to sufficient compression. Of course, the quality of 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 contaminated injection nozzles prevent normal cold starts.
In principle, the situation is resolved quickly enough. To do this, remove the candles, dry them, set them back, check the gaps and start the engine. Since injection candles practically do not differ from carburetor ones, the process of cleaning them is exactly the same. They can be unscrewed and then cleaned with a metal brush, no heating is required in this case. But sometimes the carbon deposits are so strong that you can’t do without it. Typically, a fully charged battery and a fully operational starter motor allow easy starting of the engine.
We fix the problem ourselves
To fix the problem with your own hands, you must at least know where the spark plugs are. There are several ways to solve this. The first is the installation of a new kit, of course, if there is one. It is advisable not to throw out the old ones, but simply put them in the garage. In order to remove the candles, you will need a special candle wrench, 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 way that provides for the use of old candles. The fact is that they are not spoiled, but simply filled with gasoline, but drying alone is also not enough. Therefore, we need an oven in which we can heat the candle to a high temperature and change the color to red. Such an event is carried out in order to get rid of fuel residues and the actual soot formed. But here you need to remember that in this case, firstly, the ceramics of the candle deteriorate, and secondly, polishing will be required before installation.
What to do if 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 do not need to leave the car, because we will carry out the so-called candle blowing. We fully squeeze out the accelerometer (gas) part, while turning the starter, at this time a large amount of air will flow to the cylinders and candles, which is drying. With all this, the throttle valve must be fully open.
It should be noted that this method is applicable to both injection and carburetor engines. The only thing to be wary of is that your battery will not withstand such loads. will sit down even before the candles are dry. Again, due to the fact that the throttle valve is open to maximum, gasoline does not flow to the combustion chambers, which is what we need. Now you know what to do if the candles are flooded, but you need to consider the sequence of actions on injection vehicles as a separate item.
I would like to say that the car must be prepared for operation in the cold season. To do this, you need to switch the filter from the “summer” mode to the winter mode. It is also recommended to fully charge the battery to make starting easier. As for the candles themselves, it is advisable to always have a spare set with you, because it is not known where they can be poured and what to do then.
The same applies to engine oil: it must be selected according to the manufacturer’s recommendations. And do not pour mineral oils instead of synthetics. I would also like to note that if the cold start of the engine failed the first time, then it is advisable to wait 20-25 seconds before starting the second. It must be remembered that re-enrichment of the mixture of air and gasoline can happen at any time, even when everything is in order. But after reading this article, you already know what to do if the candles are flooded, so you will always be ready for such a problem and its elimination.