Why does gasoline enter the crankcase on the walk-behind tractor

And the third reason for the breakdown: improper start of the motor with a manual starter.

Many four-stroke engine users think that the harder you pull the starter handle, the better the engine will start. This is not true. The starter handle must be pulled until the cams engage and then gently, but with a large amplitude, pull up. And the engine (if it is working properly, of course) will definitely start.

LEARN TO START THE ENGINE CORRECTLY.

Call 7 (963) 723-00-43. We will be happy to answer questions related to the operation of air-cooled engines Honda, BriggsStratton, Mitsubishi, Subaru-Robin, Lifan, Carver, Loncin, Champion.

In the spring, we take the equipment to the personal plot. Unfortunately, a situation often arises. a single-axle tractor does not start. The owner must quickly find the reason for the refusal and remove the malfunction.

a single axle tractor is a functional tool. It is indispensable for home gardening. Attached equipment allows you to do land cultivation, grass mowing, snow removal, cargo transportation, planting and harvesting.

The equipment is equipped with gasoline or diesel engines. The start of a diesel walk-behind tractor and a gasoline unit has differences. Therefore, the prerequisites for which a single-axle tractor does not start should be considered for each specific type of motor.

Before starting a uniaxial tractor, prepare equipment preparation. You need to make sure of the assortment set of all parts, make sure that the devices are securely attached.

Mechanisms are often denied to work after winter. A long break becomes a prerequisite for a malfunction of the walk-behind tractor systems. Storage in a cool and damp environment will result in subsequent breakdowns:

  • Oxidation of contacts.
  • Violation of wire insulation.
  • Watering of fuel and oil.
  • Clogged carburetor jets.

Before starting a new walk-behind tractor, they create a check of all connections, clutch cable, reverse and gas. The movement of the cables is smooth, without difficulty. Do not start the unit if there are clamps and twists of the harness threads.

At the time of the first start, they will certainly inspect the oil level in the crankcase. Lack of lubrication will damage the piston group. The crankshaft rotates up to 1400 rpm at idle speed. A couple of seconds are enough for the formation of a bully on the cylinder.

Old oil will be a prerequisite for engine failure. With all this, a single-axle tractor emits snow-white exhaust gases. A complete oil change is imposed.

Snow-white smoke is pouring out of the walk-behind tractor, begins to work in the “bucket”.

The cultivator made several claps, the revolutions began to “float”

The material will be updated, we are waiting for Комментарии и мнения владельцев with questions, stories about the identification of another malfunction, as it is also called, and methods for its elimination. Also, see the answers to questions on how it is also called another model of the walk-behind tractor on the page of its description.

First cause of failure: fuel valve not closed.

When the engine is not running and the fuel valve is open, the carburetor overflows and the spark plug “floods”. Also, gasoline enters the crankcase. And this will lead to overpressure during engine operation and extrusion of the oil seals. This mixture of gasoline and oil will then enter the combustion chamber and through the exhaust valve into the muffler. Gradually the muffler will become clogged with oil residues and the engine will lose traction.

CLOSE FUEL VALVE AFTER OPERATION ALWAYS.

Fourth: how is the engine running-in.

Air-cooled engines “don’t like” idling. Start the engine, warm it up for 1-2 minutes. and run in at work. During the break-in, try to adhere to 50-75% of the load and take obligatory breaks in work after 20-25 minutes. After a break, when the engine has cooled down (15-20 minutes), you can continue working again. In this mode, the engine should run for the first 4-5 hours, after which it is imperative to change the oil. Running in finished.

It should be noted that a uniaxial tractor does not start well when there is a lack of oil. Look only at this parameter before starting a carburetor and diesel single-axle tractor. On some models, protection is set at a low level. The sensor blocks the start, and the unit stalls.

It should be borne in mind that who type of engine asks for a certain brand of gasoline. For a two-stroke engine, the fuel is prepared separately. The fuel mixture consists of gasoline and oil. The amount of ingredients is kept in a serious ratio.

Purchase gasoline for walk-behind tractors at gas stations. The service life of the machines directly depends on the properties of the fuel. No need to start a single-axle tractor with bad gasoline.

Starting a diesel walk-behind tractor after purchase will be more complicated for you. That there is, that air enters the fuel supply system. If a long-term cranking (starter) fails to start, then the air plugs should be released. For this purpose, they open the diesel supply valve and spin up what remains for our client to make connections along the fuel channels. The end point of the purge is the injectors.

Four Stroke Engine 3D Model

In order for the gasoline engine to start, a number of requirements must be met. Let’s list them all in order:

  • Preparation of fuel consistency.
  • Fuel supply to the cylinder.
  • Ignition consistency.
  • Exhaust gas outlet.

Fulfillment of the listed criteria guarantees the start of any motor.

Difficulties in starting indicate a malfunction of components and devices. The success of the repair depends on the correctness of the diagnosis. If flaws are found, they are engaged in the repair of a diesel walk-behind tractor. Service and minor repairs are carried out by our own employees. A set of keys, locksmith tools and experienced hands will come in handy.

The second reason for the breakdown: during transportation or storage, the engine was turned over.

Since the engine is 4-stroke. gasoline is poured into the tank, oil into the crankcase. and they should not be mixed. After an overturn, these components are usually mixed in a carburetor. After that, the engine will need to be disassembled and cleaned.

DO NOT OVERVIDE A FUELED ENGINE.

First: what kind of gasoline should you use?

We recommend using clean, fresh, unleaded RON92 gasoline. Air-cooled engines are not designed to operate with AI95 and AI98 fuel. The 95th and 98th gasoline contain additives that have a detrimental effect on the piston system of the engine, leading to overheating and breakdown.

Do not mix oil with gasoline. Doing so may result in engine malfunction which is not covered by the warranty.

USE FRESH AI-92 GASOLINE WITH A SHELF LIFE OF 30 DAYS.

GAZ 66-12MKPP, 1964. 1999. gasoline gets into the engine oil

The main malfunctions due to which fuel enters the engine oil

Most failures can be divided into two large groups, the properties and characteristics of which differ from the type of engine used.

Injector
-Failure of the electric pump. With this malfunction, the pump forms a very low pressure, as a result of which the nozzles are not able to spray gasoline, but simply spill it into the cylinders. Such a spill disrupts the high-quality formation and atomization of the fuel mixture, which does not burn completely, but seeps through the rings into the oil Loss of tightness of the injectors. In such a situation, the injectors cannot close tightly and in the event of engine shutdown, a certain amount of fuel under residual pressure enters the manifold, and then through it and into the cylinders. In the future, when the engine is running, this fuel is mixed with a lubricating liquid. The presence of defects in the piston group of the power unit. Deformations on the walls of the engine cylinders, as well as the presence of scratches, chips or cracks on them, leads to poor flushing of oil from the walls and, as a result, coking of the oil scraper rings, which cease to perform their function. With such a breakdown, the fuel mixture that enters the cylinder with a faulty spark plug does not ignite, settles on the walls, and then flows into the crankcase, mixing with engine oil.
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Carburetor
-The first reason should include malfunctions in the piston group of the engine, which are similar to the indicated malfunctions for injection engines. The main reason for its malfunction is a violation of the tightness of a special diaphragm, which is responsible for the lack of penetration of the fuel mixture into the crankcase. In the event of a rupture, gasoline enters the crankcase and mixes with engine lubricant Faulty carburetor needle valve. With such a defect, the float chamber overflows, accompanied by the formation of an over-enriched fuel mixture, which subsequently, further incomplete combustion, settles on the walls of the cylinders and through them enters the crankcase of the engine. If this malfunction occurs, excess fuel from the carburetor enters the cylinders and, when starting a cold engine, flows into the crankcase. The consequences of a spark plug breakage are the same as on an injection motor.

Fuel can end up in oil, even in engines with a fully serviceable cylinder-piston group.

This problem is quite serious and can lead to malfunctions, a significant reduction in the resource of the motor, as well as to the complete failure of the power plant. Gasoline in oil significantly impairs the protective properties of the lubricant and dilutes the lubricant. Without going into details, the more gasoline enters the crankcase, the more serious the consequences can be.

With a small amount of fuel in the lubricant, the engine can run more noisily, while the wear of the loaded units will slightly increase. To solve the problem, it will be enough to eliminate the problem of gasoline flow into the crankcase and replace the engine oil. In other cases, driving on highly diluted fuel oil can cause the engine to require costly overhauls. In the list of the main signs that, to one degree or another, may indicate the appearance of the problem under consideration, the following are noted:

the power unit loses its power, there is a noticeable overconsumption of fuel; the exhaust becomes thick, grayish, has the smell of unburned gasoline; there are malfunctions in the operation of the internal combustion engine, the engine begins to triple, stall; the engine began to run noisily, knocking appeared in the area of ​​the pistons, crankshaft, etc. the level of lubricant in the crankcase is increased, while the smell of gasoline in the engine oil is clearly audible; the grease is thinned, a drop of engine oil easily ignites from an open fire; If you suspect that a small amount of gasoline has entered the lubricant, you can also additionally assess the properties of the oil using the “oil spot” method. To do this, just drop one drop of oil from the dipstick onto a sheet of clean paper. Then you need to dry the sheet for a couple of hours. Smooth, smooth edges of the spreading drop indicate that the material has not lost its properties. A black outline in the center of the spot indicates the presence of efficient additives in the lubricant. We also note that this method is also useful for a general check of the quality, condition of the oil, detecting the presence of water and other impurities in it.

If any of the above signs were noticed (noise during operation, knocking, overspending, grease dilution, fuel smell, a drop on the sheet when checking differs from normal), then you should prepare for the fact that there may be gasoline in the oil.

As already mentioned, the consequences of further driving on such a mixture can be different. The main thing is that gasoline is a rather aggressive product in relation to lubricants, since it contains a large amount of chemical additives.

The engine oil also contains a whole package of additives, while these additives are not designed for direct contact with fuel. In other words, there is an irreversible change in the physical and chemical properties of the engine oil. For this reason, an increase in the oil level due to gasoline is a serious threat to the engine.

We also add that antifreeze can also get into the oil system, as a result of which an emulsion is formed. In this case, the lubricant also loses its properties. If the leaks are intense, then a water hammer may occur at the time the engine is started. With regard to gasoline in the lubricant, a certain danger is that, quite often, the fuel dilutes the lubricant gradually, that is, it enters in small quantities. This means that the driver does not notice the problem for a long time, continuing to operate the unit as usual. In this case, the wear of the motor increases greatly. Now let’s get down to how gasoline gets into oil.

How gasoline gets into oil: troubleshooting

To understand why gasoline is in engine oil, it is necessary to refer to the design features of various internal combustion engines.

First of all, on any engines (injector, carburetor), fuel enters the crankcase from the combustion chamber through the piston rings. It is important to understand that if you pour gasoline into the cylinders of a new engine, after a while it will be in the oil. The reason is simple. the fuel washes off the oil film and passes through leaks at the locations of the piston rings. For engines with a carburetor, a frequent cause of gasoline getting into the oil is damage to the diaphragm of the fuel pump. Another reason for diluting the oil with fuel is a problem with the carburetor needle valve in the float chamber, fuel overflow into the carburetor, etc. In view of the above, it becomes clear that the main reason for gasoline getting into the lubricant is problems with the power supply or ignition system, as well as with the internal combustion engine itself. It turns out that problems can occur due to the fact that:

there is a significant re-enrichment of the working mixture; there were malfunctions of fuel injectors, carburetor, mechanical fuel pump; the ignition system is faulty or does not work correctly; the engine is faulty or worn out, there is no necessary compression in the cylinders, the fuel does not ignite; In other words, the fuel can be supplied in excess, but the rich mixture is not flammable. Also, gasoline does not burn, since there is no spark on the spark plug or the charge does not burn due to low compression in the internal combustion engine. In any case, unburned fuel enters the crankcase.

If the carburetor “pours” gasoline into the float chamber or “pours” injection nozzles, then the fuel will also drain into the cylinders and then enter the oil. In order to exclude the ingress of fuel into the oil in one way or another on the injector, it is necessary to check the tightness of the injection nozzles and clean them. It is also recommended to carry out computer diagnostics of the engine, evaluate the quality of mixture formation, separately “ring” the ECM sensors, which can affect the formation of the mixture. On carburetor internal combustion engines, the condition of the fuel pump diaphragms is monitored, the carburetor is regularly adjusted and diagnosed.

Before a cold start (especially in winter), you need to periodically monitor so that no flowing gasoline appears or accumulates under the carburetor. If such a phenomenon has been noticed, then the carburetor should be checked.

In parallel, you need to pay attention to a special drainage tube. If the tube becomes clogged, excess fuel, in the event of problems with the needle valve, begins to enter the crankcase of the internal combustion engine. Now let’s take a look at the most common causes in more detail.

does, gasoline, enter, crankcase, walk-behind

Given the fact that the fuel supply system on different engines can be very different, the paths of gasoline entering the lubrication system are also different. On engines with an injector, gasoline is supplied from a fuel tank under pressure, which is created by an electric fuel pump. At this stage, oil and fuel cannot mix in any way.

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At the same time, a mechanical gas pump is installed on the carburetor engines. The diaphragm of such a pump pumps gasoline into the carburetor mounted on the engine. The rod of the mechanical pump on some cars is driven by an eccentric, and is also lubricated with engine oil in the same way as the camshaft. If the pump diaphragm is damaged, gasoline begins to enter the stem channel, penetrating into the lubrication system. When the membrane is not severely damaged, then the accumulation of gasoline in the oil will be slow, the lubricant level will not rise. A change in the smell of the oil, as well as some liquefaction, seems to be a problem. In the event that the membrane has large ruptures, gasoline ceases to be supplied to the carburetor, the internal combustion engine is difficult to start, jerks and dips appear when driving, the unit is unstable, etc. To eliminate the malfunction, you need to replace the fuel pump membrane, as well as engine oil.

On the injector, most of the problems are associated with injectors, since an experienced driver immediately fixes ignition failures. complex is the situation in which one or more injectors cannot close tightly. This means that after stopping the engine, the fuel, which is in the fuel rail under residual pressure, flows into the manifold, then enters the cylinders, and then flows into the crankcase. Piston rings to some extent prevent gasoline from falling into the oil, but if they are worn out or stuck, then the fuel gets relatively freely into the oil sump. To solve the problem, you need to remove the fuel rail, after which the tightness of each injection nozzle is checked.

For this, flushing liquid or kerosene is supplied to the injector under pressure, and the opening and closing of the nozzle from the power source is initiated. You can also use a special stand for checking and cleaning the injectors. If the nozzles are leaking, then they need to be repaired or replaced.

As for the ignition system, if the mixture does not ignite in one of the cylinders or in several, then part of the fuel flies out into the exhaust system, and the remaining parts simply settle on the cylinder walls, then flow into the crankcase of the internal combustion engine. Ignition system malfunctions are diagnosed in a regular manner. First, spark plugs are checked, then high-voltage armored wires, a coil, a distributor and other elements that are installed on a particular car. CPG wear is a common problem in carburetor and injection ICEs. As a rule, we are talking about the wear of the compression and oil scraper rings. In such a situation, the fuel is actively draining into the crankcase. It is important to consider, however, that ring problems also lead to decreased compression. It turns out that the mixture compresses worse and burns out incompletely, the engine loses power. The driver presses on the gas harder, supplying more fuel to the combustion chamber, but combustion does not occur in full. Excess fuel leads to contamination of the engine and the formation of carbon deposits, and also partially gets into the crankcase.

Fuel, regardless of the type of ICE power supply system, after the gasoline pump must reach the carburetor and the combustion chamber. The latter is a section between the cylinder head (cylinder head) and the piston head, where the combustion of a mixture of fuel and oxygen takes place. A mixture of fuel and air on the way to the combustion chamber passes through the intake channels, their necks are always lubricated with motor oil. This is where leaks happen. The reason is that the valves are fitted with rubber caps. They are designed to reflect car oil. If, due to the strong wear of the caps, grease penetrates the combustion chamber, the car exhaust will stink of smoke from motorcycles. The chance that the oil will get into the combustion chamber is rather low. Usually oil smells like gasoline for other reasons. It should be added that if you start the car in winter conditions, gasoline will burn ineffectively for the first couple of minutes. The exhaust gas smells like raw fuel, condensation is flowing from the exhaust pipe. This is completely normal.

As you can see, if gasoline gets into the oil, then the engine should not be operated until the breakdown is eliminated. This phenomenon is especially dangerous when the driver did not know about the problem, that is, a large amount of gasoline has accumulated in the crankcase, the pressure in the lubrication system has dropped, the emergency oil pressure light on the dashboard lit up.

does, gasoline, enter, crankcase, walk-behind

In such a situation, you need to immediately eliminate the main problem by repairing the ignition system, carburetor or injection injection. Also, an oil change will be a mandatory procedure, with which it is better not to delay. Finally, we add that in some cases the fuel itself may refuse to cause ineffective combustion of the mixture in the cylinders. The fact is that gasoline is often of very poor quality.

Fuel mixed with third-party additives burns worse. Unburned residues can also enter the crankcase. In some cases, it is enough to change the oil and start refueling at another gas station.

Also, in some sources, for prevention purposes, it is recommended to periodically turn the engine to high revs for a short period of time while traveling along the highway. Driving this way causes the oil to heat up, which helps to reduce accumulated condensation and trapped fuel.

Technical characteristics of GAZ 66-12 in the body of a board-awning, manual transmission, produced from 1964 to 1999.

Why does gasoline get into the crankcase?

Piston system malfunctions

This malfunction is the most costly.

It consists in the fact that as a result of the use of low-quality fuel and lubricants, carbon deposits can form on the pistons, and the piston rings become carbonized. The grooves in which the rings are installed are clogged with soot, as a result of which the rings lose their elasticity. Due to the resulting gap between the piston and the cylinder walls, part of the incoming fuel escapes.

It is not difficult for an experienced driver to identify such a problem. And to solve it, that is, to eliminate engine coking, special fluids are used. However, using them can sometimes exacerbate the problem. Therefore, decoking liquids must be used in strict accordance with the manufacturer’s instructions, and after the end of the procedure, completely replace the oil.

If there is no effect from the use of cleaning fluids, you will have to do a complete disassembly of the engine, remove the pistons and repair them. Such repairs will be difficult to do at home.

Checking the injectors of the fuel injection system

If one of the injectors does not close completely, fuel can enter the cylinder and then through the piston clearances into the oil. To check the pressure in the power system, you need to use a pressure gauge and a rubber hose. The upper pressure limit should not be lower than 6 kgf / cm².

Why does gasoline get into the crankcase

Quite often, drivers find gasoline in the oil in VAZ cars. In most cases, this fact comes to light when the engine already starts to stall, triple, stops starting, and smoke comes out of the exhaust pipe. In such cases, when draining the oil, you can find a liter of gasoline that dilutes the oil.

The problem may be associated with a fuel pump leak. There can be a number of reasons: from natural wear of the pump motor brush assembly or a torn membrane to improper operation of the car (driving on an empty tank, poor fuel). Also, the service technicians say that slime / sediment is found on the parts in the fuel tanks, which cover not only the pump body on the outside, but also the components inside. This indicates poor fuel and low-quality additives contained in it.

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In addition, gasoline can enter the oil directly from the engine, through the cylinders. Defective EGR system Worn cylinder piston rings can ensure continuous mixing of the two feedstocks.

There are several ways to detect gasoline in oil: 1. Take the oil dipstick and sniff. Sometimes you smell gasoline. 2. Conduct a drip test. Drop oil on office paper (such paper contains a fibrous structure) and leave in a warm place for a day. Further, along the outer circle of divorce, you can find gasoline (it is especially clearly visible “to the light”).

Set fire to warm oil. The oil sample must be heated to a temperature of 100’C in order for the gasoline to evaporate more actively.

In our experiment, we used ordinary test tubes with used oil and a hotplate. In the test tube on the left, there was almost no gasoline in the oil.,

In vehicles equipped with an injector, fuel is injected under pressure using special injectors. If gasoline gets into the engine oil, it is necessary to look for a breakdown.

The sulfuric acid problem

During the combustion of the fuel, part of the gases that expands enter the space under the piston. These gases contain many substances, among which are vapors of various acids. As a result, the amount of sulfur present in the fuel affects the amount of sulfuric and sulfuric acids that penetrate into the oil. Accordingly, the more sulfur in the fuel, the more its acids get into the oil.

Sulfuric acid accelerates the oxidation of engine oil, thus reducing its service life. The result is a fairly simple relationship: the less sulfur is contained in the fuel, the longer the oil can work.

It is impossible to say anything about the sulfur content in the fuel only by its type. All a driver can do is look at the corresponding document at the gas station.

Cleaning the drain tube under the carburetor

A container of carburetor cleaning fluid is suitable for removing contaminants from small channels such as a drain tube. With its help, it is worth cleaning the carburetor itself. It is strongly not recommended to use metal wire for these purposes.

Why does fuel get into oil?

Causes of high fuel content in oil: incomplete combustion of fuel due to inaccurate engine adjustments, poor injection performance, improper ignition, incorrect valve adjustment, defective atomizers, worn piston rings, faulty fuel pump, etc.

Why does gasoline get into the crankcase?

Gasoline in oil leads to a decrease in the viscosity of the lubricant, as well as a loss of its performance. There are many reasons why gasoline appears in the crankcase. partial failure of the fuel pump (on carburetor engines), loss of tightness of gaskets, decrease in compression and some others.

How gasoline gets into the crankcase?

Where does gasoline get into the oil: troubleshooting

  • First of all, on any engines (injector, carburetor), fuel enters the crankcase from the combustion chamber through the piston rings.
  • For engines with a carburetor, a frequent cause of gasoline getting into the oil is damage to the gas pump diaphragm.

Why does gasoline get into the crankcase of the walk-behind tractor?

The main reason why the car oil is in contact with fuel is severe wear of the compression / oil scraper rings. Gasoline flows into the crankcase, oil enters the combustion chamber. All this indicates that it is necessary to overhaul the power unit, since many serious malfunctions have accumulated in it.

How diesel fuel gets into oil?

The most common way of diesel fuel getting into oil is failure of the high pressure fuel pump (diesel main equipment. high pressure fuel pump), more precisely, the plunger pairs of this equipment. This applies only to those motors that have a common lubrication system for the engine and the injection pump.

Tractor Has Gas In The Crankcase

What happens if diesel fuel gets into the oil?

Diesel fuel also gets into the oil through shamelessly pouring nozzles, but in this case the piston can burn, the engine can smoke, overheat, in general, the khana will also come if not eliminated.

WHY IS MY CRANKCASE FULL OF GAS? TOP 4 REASONS WHY

Why did the engine oil become liquid?

Excessive thinning of engine oil can also often occur as a result of aging of the lubricant itself or engine overheating. One way or another, there is a breakdown of “viscous” components into the smallest particles. The oil can also become too liquid due to excess fuel from the combustion chamber entering the crankcase.

Fuel in the lubrication complex

The owners of both foreign cars and Russian cars are aware of the problem of the smell of gasoline from car oil. In a two-stroke power unit, fuel is a combination of gasoline and lubricant. In a four-stroke engine, these fluids should not come into contact. The oil circulates in a closed circuit. If there is a smell of gasoline on the dipstick, it means that the fuel has mixed with the car oil.

Leakage reasons

Fuel, regardless of the type of ICE power supply system, after the gasoline pump must reach the carburetor and the combustion chamber. The latter is a section between the cylinder head (cylinder head) and the piston head, where the combustion of a mixture of fuel and oxygen takes place. A mixture of fuel and air on the way to the combustion chamber passes through the intake channels, their necks are always lubricated with motor oil. This is where leaks happen. The reason is that the valves are fitted with rubber caps. They are designed to reflect car oil. If, due to the strong wear of the caps, grease penetrates the combustion chamber, the car exhaust will stink of smoke from motorcycles. The chance that the oil will get into the combustion chamber is rather low. Usually oil smells like gasoline for other reasons.

It should be added that if you start the car in winter conditions, gasoline will burn ineffectively for the first couple of minutes. The exhaust gas smells like raw fuel, condensation is flowing from the exhaust pipe. This is completely normal.

how to remove the overflow of gasoline on a walk-behind tractor.

Poor fuel is one of the conditions for mixing gasoline and oil in the crankcase.

Leakage signs

Is it possible to understand that there was a leak? You can find out about this by noticing a dark puddle under the car. It happens that grease flows out from under the valve cover lining, oil seals or crankcase gasket. Car oil can only be mixed with fuel in the engine. It is possible to determine that gasoline has got into an oily liquid by the following signs:

  • the viscosity of the oil has changed, it has become thinner;
  • the car oil on the dipstick lights up if you bring a flame;
  • a drop of oil on a piece of paper leaves a greasy, enlarging stain.

Low quality gasoline

Fuel may end up in the lubricant due to its own poor quality. Why quality matters?

The car owner often buys fuel that has a variety of added additives (benzene, toluene). It is able to quickly penetrate into the lubricant due to the added substances. Car oil, which has been affected by poor fuel, rapidly degrades its own characteristics. This leads to malfunctions of the fuel distribution unit.

In view of this, in order to fix the problem, sometimes it is enough to simply change the gasoline. Fuel must be chosen carefully. Replace it immediately if you notice that the oil smells like gasoline.

The main causes of engine breakdowns

REMEMBER. Engine breakdowns are mainly due to improper operation.

First cause of failure: fuel valve not closed.

When the engine is not running and the fuel valve is open, the carburetor overflows and the spark plug “floods”. Also, gasoline enters the crankcase. And this will lead to overpressure during engine operation and extrusion of the oil seals. This mixture of gasoline and oil will then enter the combustion chamber and through the exhaust valve into the muffler. Gradually the muffler will become clogged with oil residues and the engine will lose traction.

CLOSE FUEL VALVE AFTER OPERATION ALWAYS.