Black Nar on a candle of lawn mowers. Why is the spark plugs black?

How to care for a lawn mower so that it lasts longer

Incorrect care of your lawn mower can greatly reduce its service life. We list the main tips that need to be followed to minimize the problems associated with the country device.

Choose high quality gasoline

Perhaps the lawn mower does not seem so important unit as to spend money on fuel more expensive, but low.quality gasoline can lead to an accelerated wear of the device. According to the classics for lawnmands, AI-92 is used, but perhaps you should try the class above. By the way, the recommended fuel brand should be indicated in the instructions.

Use fuel stabilizer

If even during the season, your lawn mower occurs downtime in several weeks, gasoline may start to deteriorate (the formation of sediment, which can lead to suction and breakdown). A special liquid will save the situation, which slows down the oxidative processes in gasoline, because of which, in fact, it deteriorates. But it makes no sense to fill the stabilizer in the “stale” gasoline, which was poured a few weeks ago. Improve its quality in this way will not work.

Drain the gas for the winter

Hence the next advice: if in the coming months the lawn mower is not needed (for example, in the cold season), then gasoline must be drained.

Change the oil

If you have already thrown off the instructions where it is written, how often you need to change the oil, be guided by the general rule and change the oil at the beginning of the season or after 50 hours of use (which, in fact, run over the season). To make it easier to drain the old oil, turn on the machine for several minutes and warm the engine (the oil will heat up with it and it will not be so viscous).

Check the oil level before each use. Without oil, a double load lies on the engine, which is why it can fail faster. A special probe (metal rod) with notches will help to check the oil minimally and the maximum permissible levels.

There are different types of oil, and not everyone is suitable for the engine of your lawn mower. Suitable oil is indicated in the instructions.

Check the candles

If you see black soot on the electrode, traces of oil or gasoline on a candle, then it must be replaced (but a light brown fiddle is permissible). Otherwise, manufacturers recommend changing candles once a season. Seek candle replacement guide in the instructions.

Wash or change the filter

If not for the filter, the ground would have entered the ground and different vegetable garbage. Foam filters can be washed and dried, paper must be changed once a season.

Wireless wireless.core or trimmer

Keep the battery charged

You do not have to monitor the oil, the condition of the candles and buy expensive gasoline, but this does not mean that your lawn mower does not require trouble. You will have to take care of the battery. The lithium battery, which is usually used in lawnmands, is sensitive to high and low temperatures, so in the summer the device needs to be stored at least in the shade, and in winter. in a heated room. The battery must be periodically recharged in the non.season, because if it stays on the zero charge for a long time, then it can subsequently keep the charge worse or not keep at all. Do not buy wireless lawn mowers, the battery in which cannot be replaced!

Charge the battery only from the original charging

Using the charger that does not correspond to the battery, you run the risk of arranging a short circuit and fire.

Do not cut the lawn in the rain or after it

The classic electrical appliance is better to keep away from the water.

Red, white, black fog on the spark plugs: causes, diagnosis, elimination of the problem

The spark plugs are installed in the car to perform two functions. ignition of the working mixture in the combustion chamber and removal of excess heat after detonation. Their competent work seriously affects the traction properties of the engine, and if the motor began to unstable at idle, hard to start or “twitch”, you should pay attention to the state of candles.

Car manufacturers prescribe information in the technical passport about how often it is necessary to change the spark plugs. But these values ​​are most often exaggerated for marketing purposes, and the driver has to change candles more often than the developers of the car plan. If suspicions of ignition candles occur, you can check their condition quite simply, paying attention to the color of the carbon on the electrodes. This will determine which particular car systems led to the failure of the ignition candles.

Why does a fog on the electrodes of the spark plugs occur

Car suppositories work in a “rigid” environment, where not only the thermal, but also the chemical effect occurs on them. When fuel combustion on the electrodes of candles, a gray coating is formed, which signals the stable operation of the system. At the same time, there can also be red, black or white fog on the spark plug, which should make the driver of the car think not only about replacing candles, but also about the need to urgently check the engine for certain malfunctions.

The color of the incentive of an electrode of the candle clearly signals what kind of malfunctions could occur in the engine. Most often they are associated with the moment of sparking, the composition of the fuel mixture or temperature in the combustion chamber. In more detail, each color of the fulf in the spark plug we will consider below.

How to check the condition of the engine by fuel candles

It is believed that the spark plugs are the best diagnostic tool if it is necessary to detect a malfunction that is associated with the ignition cycle of the working mixture. In this case, it is impossible to draw conclusions about the state of the motor, unscrewing the spark plugs after 10-20 or more thousand kilometers. Diagnostics is carried out exclusively on “fresh” candles, but at the same time they should take a run into 150-200 kilometers.

To check the condition of the engine on the soil of candles, you need:

Install new candles; go to them 150-200 kilometers; unscrew the candles and look at the color of the carbon fiber, which began to form on them.Attention: check the color of the carbon on the spark plugs should only be on the heated engine.

The most common color of the car is considered to be black, and correctly diagnose the malfunction that it indicates is most difficult. Black carbon car can be presented in two variations, each of which is indicated for a certain malfunction in the engine operation. Distinguish between black soot in structure, which allows you to accurately identify a group of causes of problems with the engine.

Important: the evenly distributed coffee.free crime or grayish shade indicates that there are no problems at the time of combustion of the working mixture. A similar cargo is characteristic of stable engine operation.

Lawn Mower Spark Plug Wrench

A pronounced oilseed black fog, formed in the area of ​​threaded compounds and on the electrode, often manifests itself simultaneously with another symptom. blue smoke from the exhaust pipe at the start of the engine. A similar type of soot on the spark plugs indicates that the oil in excessive quantities enters the combustion chamber. This can happen for one of the following reasons:

Wear of oil.welded caps on the piston; wear of piston rings on the valve; wear of the guide valve bushes.As you can see, the problem is associated with worn details of the cylinder-piston group. With such malfunctions, it is necessary to replace worn parts.

The second type of black carrier on the spark plugs is called “velvety”. In this case, the felility does not differ in the presence of oil subtexts. Most often, such a type of carbon monoxide suggests that the fuel-air mixture, strongly enriched with gasoline, falls into the combustion chamber. If a dry black fog appears on the spark plugs, the following malfunctions are possible:

Inappropriate operation of the spark plug. It is possible that there is not enough energy for the production of sparks of the required power; low compression in engine cylinders. When the black velvety breeding on the engine is manifested, it is recommended to check the compression in the cylinders; if the engine is carburetor, the problem can be associated with improper tuning the carburetor; if the engine is injective, the malfunction indicates problems with the fuel pressure regulator, which excessively enriching the air mixture. In such cases, you can notice an increased fuel consumption by a car; an air filter is clogged or faulty, which passes an insufficient amount of air, which leads to incomplete combustion of fuel, and it settles the spark plugs on the electrode.A similar type of soil is characterized by the fact that it settles more on the electrode of the spark plug and practically does not penetrate the threaded connection.

If the owner of the car uses various additives for fuel or oil, he may notice that a red carpet is formed on the spark plug. This is due to the combustion of chemical additives flooded with excess. If the driver regularly uses certain additives and notices that his spark plugs are covered with red soil, the next time it is recommended to reduce the number of filled additives.

The problem is characteristic if the additives used in the car have additives of manganese or lead are additives. If you do not pay attention to the red carrier on the spark plug, a layer is formed on the electrode, due to which the likelihood of a spark will decrease, which will lead to unstable engine operation.

When a red carrier appears on the spark plugs, it is recommended to remove it, as well as replace oil or gasoline, depending on where the additive was flooded.

Like Black Nar, white has various manifestations. It can have a glossy surface, due to the presence of metal grains in the soil, or settled on an electrode in the form of large white deposits.

Feature on the spark plugs

By soot on the spark plug, you can determine the well.being of the engine. Let’s figure out how to determine the problem by the color and structure of the car. The principle of action of internal combustion engines is the same, so this article will be useful not only to owners of mopeds and lawn mowers.

What does “normal” do not mean?

A candle of sand-gray color, without fuckers of soot, electrodes are not errodized. The candle operates in standard heat mode, the engine is normal

Soot. The main feature of the re-enriched gas-air mixture. The reason may be a dirty air filter, broken enrichment, or a carburetor needs to set up. Also, the soot on the candle can be an indirect sign of low compression and low sparking energy.

On a two.stroke engine, of course, the oils were poured into gasoline. On four.stroke. Dilorated piston rings or oil.removable valve caps are worn out.

Forethos remains from oil and dirty fuel. Such a carcass is not terrible, but the candle must be cleaned, otherwise the spark will disappear soon.

Changing the color of the insulator.

No self.cleaning of the candle. As a rule, the insulator changes color if it was overheated with prolonged acceleration.

The carcass blocked the air gap between the electrodes and the spark disappeared. It happens if the engine is under a serious load for a long time. Combustion products sticking to electrodes are melted and drained on one of the electrodes.

White insulator and traces of erosion on electrodes. A sign of overheating, which could occur due to the depleted gas-air mixture, poor engine cooling, “early” ignition.

Когда двигатель долго не эксплуатируется, то после прогрева, частички нагара могут отлететь от свечи, и разогревшись прилипнуть обратно на свечу.

Most likely used a candle with an irregular vibal number. Electrodes are often burned out due to too early ignition.

MECHASICAL DAMISE.

If mechanical damage is visible on the candle. It’s bad. Most likely it is a fragment of a piston ring or a rogue of a piston finger.

Destruction during detonation.

The insulator of the central electrode is destroyed, the reason. Detonation due to late ignition or use of gasoline with a low octane number.

Useful videos

Below we bring to your attention several videos about the reasons why the lawn mower is not started, and about the ways to eliminate them.

The reasons why the lawn mower is not started or poorly starts “hot”, and what to do:

Another plot about why the lawn mower stalls or does not start “on hot”:

The lawn mower is poorly started or not starting “to cold”:

The Chinese lawn mower died down or stopped starting up:

The analysis of the situation when there is a spark, and the gasoline trimmer for the grass does not start:

The most common problems

Here are the most common malfunctions:

  • the engine does not start;
  • The motor stalls arbitrarily;
  • The engine does not gain momentum or does not hold them;
  • Immediately after the start of the mowing, the engine speed falls and it stalls or works with interruptions;
  • smokes strongly;
  • It goes badly;
  • does not stop even after the operator released the wheel drive lever;
  • shakes hard;
  • Poorly cut the grass.

The engine does not start

There are quite a lot of reasons why the motor does not start:

  • empty fuel tank;
  • a air filter is clogged;
  • a muffler is clogged;
  • The ignition switch is installed in the wrong position or faulty;
  • The air damper control lever is in the wrong position;
  • faulty candle;
  • broken or clogged carburetor.

Primary inspection

To establish the real cause of this defect, you must first conduct a full external inspection and make sure that the openings of the air filter or muffler are not clogged, there is gasoline in the tank, and the throttle control lever and the ignition switch are in the correct position.

If everything is in order with this, then it is necessary to carry out pre.launch work, including cleaning air or fuel filters, described in detail in the instructions for the operation of the mower, and then try to start again.

After making sure that the motor still does not start, the mowing is placed on the table and proceed to a more detailed search for the reasons.

First, the spark plug is twisted and tightly plug the candle hole with your finger, then smoothly, but quickly and strongly pulled the hand starter cable or pressed on the electric launch button.

The moving piston should create sufficient air pressure so that it pushes the finger and goes outside. If this does not happen, then the motor needs serious repairs, which is difficult to make at home, so it is better to take the mower to a specialized workshop.

After all, the reason that the piston does not move after the starter’s cable or rotating the shaft of an electric starter may be:

  • Damage to the starter, because of which he does not transmit the energy of rotation to the engine shaft;
  • The cut off the flywheel that connects the flywheel and the starter with the engine, and also provides the correct ignition angle.

To eliminate both malfunctions, not only tools, but also skill are needed, so those who do not have the skill of repairing any engines are better not to try to eliminate such problems on their own.

Further check

If the piston moves, then you must first check the fuel supply, for which the candle is thoroughly wiped with a dry clean rag, then screw it into place, and the regulator of the position by the air damper is placed in the “OFF” position, as during the start of the engine.

After that, the fuel is pumped up (if the engine design provides) and twitch the hand starter cable several times or pressed on the electric starter button and hold it for 1-3 minutes.

Then, the lever of the air damper is transferring to the “ON” position and the candle is unscrewed, which is carefully examined.

black, candle, lawn, mowers, spark, plugs

Wet contacts indicate that gasoline enters the engine and the problem of ignition, and dry contacts say:

In both cases, knowledge and equipment are necessary for proper diagnosis and repair, therefore, it is better to take the device to repair the apparatus to a specialized workshop.

If the fuel comes, then it is necessary to check the external condition of the ignition coil and the high.voltage wire. If they have cracks or poor contact as between the wire and the coil, so at the place of connection of the wire with the candle tip, they must be replaced.

If everything is fine, then you need to check the spark, for which you can use both a deliberately serviceable candle and a bolt suitable in diameter, which is inserted instead of a candle in a high.voltage wire.

The operations described below, if they are performed with errors, can damage the ignition coil, so if you are not sure that you can do everything right, then it’s better not to take risks and entrust such a check to professionals.

HOW TO CLEAN A SPARK PLUG IN 1 MINUTE

The candle is leaned with threads against the ribs of the engine cooling shirt, and the bolt is placed so that it does not come into contact with the mowing case or its engine, and the distance from it to the cooling shirt was 1-2 mm.

After that, disconnect any wire going to the ignition switch, then pull the lever of the manual starter or press the electric button and see if the spark will appear.

If there is no spark, then the device does not start for one of the reasons:

For the repair of these damage, skills and equipment are needed, so those who do not have them are better to trust professionals. If there is a spark, then the problem is in the spark plug, so after replacing it will work.

The motor stalls arbitrarily

The most frequent reasons why the engine stalls during operation are:

  • Dirty air filter;
  • Dirty fuel filter (only for models with a fuel filter);
  • faulty ignition switch (does not completely open the ignition circuit);
  • damaged insulation of the ignition shutdown wires;
  • faulty air damper drive;
  • the tightness of the ignition coil is broken or its winding is broken.

The primary inspection is performed in the same way as described in the previous section. If everything is fine outwardly, then carefully examine and feel all the wires suitable for the switch that blocks the operation of the ignition system, is possible somewhere damaged and when contacting the naked metal of the case, there is a short circuit that extinguishes the spark.

A gasoline lawn mower is a complex motorized equipment that needs proper timely maintenance and periodic repair.

Now you know what malfunctions can independently eliminate most of the owners of gasoline lawners and how to do it, and in which cases it is better to contact the workshop.

Why do engines smoke

Power, which drives a two- or four-stroke engine of the lawn mower, comes from explosions in the combustion chamber. Like all combustion reactions, these explosions require oxygen, and when there is not enough air and incomplete combustion, fuel, which does not burn, turns into soot carbon deposits. They are either blown out of the final hole in the form of black smoke, or gather on the terminals of the spark plug, which protrudes into the combustion chamber. An engine that produces a lot of black smoke usually does not work at full power, and, in the end, carbon accumulates enough on the candle to prevent ignition and starting.

If your lawn mower produced black smoke and now does not start, you can usually start it again, cleaning or replacing the spark plug. Remove the spark plug lid, unscrew the candle with the end key and inspect the terminals., If they are covered with thick deposits, remove deposits with sandpaper or file, if you have a horse riding mowel or a mowing with a four.stroke engine, and you see wet oil deposits, you may be worn out by the lingel oil as a lingel oil. You can run the engine by cleaning or replacing the plug, but smoking will continue until you repair the seal.

Restore the air flow

Another reason for the lack of air in the combustion chamber. Dirty air filter. You must regularly clean this, but it’s easy to forget to do it, and when the filter is polluted, it passes the air. The filter is easily available, and the procedure for its removal and cleaning depends on your lawn mower. Many air filters are located on the side of the gas mowing engine and are enclosed in a plastic box held in place with a screw. Some filters are disposable and should be replaced, while others are washed with water with soap. Paper filters can sometimes be cleaned by blowing them with compressed air, and foam filters can be washed again. The muffler can also clog and limit the flow of air leaving the combustion chamber. Remove and clean the soot with a wire brush or replace it. In order to avoid burns, give the mower and muffler completely cool before shooting.

Small engine carburetors have two or three adjusting screws. one for adjusting the velocity velocity and the other one or two to adjust the air ratio of the air. When the engine produces black smoke, this may be due to the fact that the low-speed screw marked by the letter “l” on most cars is too open. Find adjusting screws that are often under an air filter, and turn a low.speed screw for 1/4. 1/2 revolution clockwise using a screwdriver to create a more liquid fuel mixture when you make this setting, you will probably notice that the engine is better because it burns fuel more efficiently.

Causes of blackening

Black candles can become both evenly and apart. Sometimes only one of them can blame, and such symptoms allow you to find out why this is happening. Most likely, it is she who is faulty, and blank has nothing to do with pistons, cylinders and valves. What exactly failed? I can assume that the tip does not work in it, or the wire. But it can also be the cause of the appearance of black plaque and the cylinder that corresponds to it.

Unilateral blackening can be caused by poor tightness of the valve, namely, its landing. Other sources of the appearance of black soil are in the problems of the exhaust system of the timing belt. The burning of the valve causes blackening to the same extent as other malfunctions.

The uneven appearance of a plaque may also be caused by non.compliance with the type of marking of the car motor. If the heating number of the incendiary device is too small, then only the cone will be modified, and if its number exceeds the permissible minimum for a given car, then only the top will become black, and the device body will remain dazzling white.

black, candle, lawn, mowers, spark, plugs

If all the candles became black evenly, then the cause may be the cause later. it is it that can cause such an effect. To determine the problems in the starter, you should listen to its work, with late ignition, a characteristic knock will be heard. An extreme case is when the fuel-air mixture is too enriched and because of the products of combustion, soot on the working parts of the ignition system appears. This happens with a faulty injector.

black, candle, lawn, mowers, spark, plugs

What to do when blackening?

Overheating and oil pollution negatively affect the ignition system, so they must be avoided. If the pollution is not so scary, then overheating is able to completely destroy the electrodes without the possibility of their restoration.

If one candle is faulty, then the cause can be identified by changing them. If a plaque appeared on a clean one, and the dirty is cleansed, then the problem in the cylinder, which causes the appearance of black plaque when working. If nothing has changed, then most likely the problem is the performance of the candle. After all, the work of the cylinders did not affect the appearance of the replaced details.

If you don’t want to change anything in places, it is worth replacing completely the whole set with workers. If, after a trip with a new set, the result repeated, then you can be sure that the malfunction lies in the cylinder. If nothing has changed, then, most likely, the problem was a candle from the old kit. With an increased fuel consumption and a faulty injector, the central electrode is covered with velvet-black car.

When the car rides, the smoothness of the move should indicate the correct operation of all its systems.

If, when driving, jerks are felt, it is worth looking for the causes in the engine, as well as in the starter system. The speed of solving the problem depends on the correct approach to the search for a malfunction. In order to quickly find out which of the reasons lies in the raid, you need to know that what side and how the plaque appeared depends on what exactly does not work. The pounding of the cone indicates the pounding number, the very top itself remains clean. If the insulator is blackened on one side, and on the other, it remains clean, then the problem lies in the valve, the incorrect installation of the timing belt, passing the abilities of the exhaust.

Causes of blackening

Black candles can become both evenly and apart. Sometimes only one of them can blame, and such symptoms allow you to find out why this is happening. Most likely, it is she who is faulty, and blank has nothing to do with pistons, cylinders and valves. What exactly failed? I can assume that the tip does not work in it, or the wire. But it can also be the cause of the appearance of black plaque and the cylinder that corresponds to it.

Unilateral blackening can be caused by poor tightness of the valve, namely, its landing. Other sources of the appearance of black soil are in the problems of the exhaust system of the timing belt. The burning of the valve causes blackening to the same extent as other malfunctions.

The uneven appearance of a plaque may also be caused by non.compliance with the type of marking of the car motor. If the heating number of the incendiary device is too small, then only the cone will be modified, and if its number exceeds the permissible minimum for a given car, then only the top will become black, and the device body will remain dazzling white.

If all the candles became black evenly, then the cause may be the cause later. it is it that can cause such an effect. To determine the problems in the starter, you should listen to its work, with late ignition, a characteristic knock will be heard. An extreme case is when the fuel-air mixture is too enriched and because of the products of combustion, soot on the working parts of the ignition system appears. This happens with a faulty injector.

What to do when blackening?

Overheating and oil pollution negatively affect the ignition system, so they must be avoided. If the pollution is not so scary, then overheating is able to completely destroy the electrodes without the possibility of their restoration.

If one candle is faulty, then the cause can be identified by changing them. If a plaque appeared on a clean one, and the dirty is cleansed, then the problem in the cylinder, which causes the appearance of black plaque when working. If nothing has changed, then most likely the problem is the performance of the candle. After all, the work of the cylinders did not affect the appearance of the replaced details.

If you don’t want to change anything in places, it is worth replacing completely the whole set with workers. If, after a trip with a new set, the result repeated, then you can be sure that the malfunction lies in the cylinder. If nothing has changed, then, most likely, the problem was a candle from the old kit. With an increased fuel consumption and a faulty injector, the central electrode is covered with velvet-black car.

When the car rides, the smoothness of the move should indicate the correct operation of all its systems.

If, when driving, jerks are felt, it is worth looking for the causes in the engine, as well as in the starter system. The speed of solving the problem depends on the correct approach to the search for a malfunction. In order to quickly find out which of the reasons lies in the raid, you need to know that what side and how the plaque appeared depends on what exactly does not work. The pounding of the cone indicates the pounding number, the very top itself remains clean. If the insulator is blackened on one side, and on the other, it remains clean, then the problem lies in the valve, the incorrect installation of the timing belt, passing the abilities of the exhaust.

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