The Chainsaw Chokes When You Press The Gas Cause

Where to look for the reason or where to start checking

All chainsaws have the same design and work according to the same principle. The chainsaw device can be found in this material. It does not matter which brand of tool. Stihl, Husqvarna, ECHO, Champion, Partner, Sturm and others. A malfunction that manifests itself in the form when the chainsaw stalls when the gas is pressed can occur equally both on expensive and high-quality tools and on budget Chinese devices. If a problem occurs, then it needs to be solved.

A chainsaw is a system of mechanisms consisting of parts. Any part in the mechanism can fail, which will lead to partial or complete failure of the tool. If the engine of the tool starts, this does not mean that the chainsaw is completely operational. When the engine stops working when the engine speed rises, then there are corresponding reasons. With this malfunction, attention should be paid initially to a number of the following tool mechanisms:

  1. Gas tank. Make sure there is fuel. If there is sufficient fuel, you should also check the serviceability of the fuel filter, the presence of a connection of the supply hose with the carburetor, and also make sure that the breather is working

These are the main parts and mechanisms that should be checked first if a malfunction occurs when the chainsaw stalls when the accelerator is pressed. There are other reasons why the chainsaw engine stalls when the gas trigger is pulled. What else can contribute to the occurrence of this malfunction, as well as the features of eliminating breakdowns, we will find out further.

Not enough fuel to feed and run the chainsaw at full power

If the chainsaw stalls when gas is added, it means that fuel is not supplied in sufficient quantity for the proper operation of the chainsaw. This may be due to both clogging of the carburetor (its jet) and contamination of the filter itself (fuel). Remember that only professionals should check the first node, but you can clean the second one yourself.

Problems associated with improper operation of the fuel system

The tool will stall if the fuel line is broken or the wrong fuel ratio is selected. Especially often, such tube defects occur when the instrument is in a room for a long time, where there were sharp temperature changes. When refueling the device, you must strictly follow the manufacturer’s recommendations regarding the ratio of gasoline and oil.

Why the chainsaw stalls when the accelerator is pressed. Summing up

When making an upgrade for the reasons why the saw stalls after you press the gas, you need to take stock of all sorts of reasons and their elimination. The reasons can be conditionally divided into two parts. Simple and complex. You need to start troubleshooting with simple reasons, and end with more complex ones.

You definitely need to start the check from the tank, not from the carburetor, but from the gas tank. And make sure to use a properly prepared mixture. Next, you need to check the serviceability of the muffler and the presence of carbon deposits on the spark plug. After that, you will already have an idea of ​​in which part of the tool you need to look for a breakdown. Perhaps a breakdown is. That you just need to wind up the maximum speed, for which the carburetor is tuned. If this does not solve the problem, then you should check the air filter and clean it.

Pay special attention to the carburetor, after cleaning and possibly repairing which the chainsaw should work like new. If even after this the problem remains, then do not be too lazy to check the amount of compression. Perhaps the engine has a strong performance and needs to be replaced.

This completes the upgrade to restore the tool’s performance, and it is worth noting one more point, such as the use of fuel that is stored for a long time. Many people dilute gasoline with oil, and store the mixture for months, and sometimes for six months. This cannot be done in any way, since the mixture has the properties of aging, and therefore, after its preparation, it must be used within 1-2 weeks. If you do not follow this recommendation, then you will need to often change not only the fuel filters, but also clean the carburetor, but the worst thing is that this contributes to accelerated wear of the CPG.

The chainsaw stalls at high speeds. Simple carburetor repair

The carburetor of the instrument is exactly the mechanism that most owners are afraid to disassemble on their own. The reason is that this mechanism consists of many small parts, the location of which must be remembered when carrying out dismantling work. However, not everything is as scary and difficult as it might seem. To understand how the carburetor has to do with the problem of stopping the engine when the engine speed increases, you need to find out its principle of operation, described on the website.

The chainsaw stalls when you press the gas due to the carburetor, if:

  1. Diaphragm damaged
  2. Clogged filter element (mesh in the carburetor). This malfunction may be encountered by owners of tools who do not have a fuel filter or it is simply disconnected from the fuel hose.
  3. Needle sticking, possibly due to outdated fuel mixture
  4. Clogged nozzles or clogged carburetor
  5. Bending of the connecting part connecting the membrane with the needle to supply fuel to the fuel chamber of the carburetor. This part is also called a foot, since under the influence of the membrane on it, the needle moves and the channel opens. During operation, this foot can bend (work out) or break (the engine will not start if it breaks). If the foot is bent, then it can be unbent, but this does not guarantee that the problem will soon recur, therefore it is recommended to replace the part

It is recommended to clean and wash the chainsaw carburetor, and replace faulty parts and elements. After that, you can put it back, not forgetting to also replace (if worn out) the gasket between the carburetor and the adapter.

Why does the chainsaw stall when you give gas when pressed, and does not start under load at idle

There are often cases when the owners of chainsaws are faced with their breakdown and it does not matter which model of this kind of equipment, since the nature of the breakdowns is almost the same for everyone. Well, the chainsaw has stalled and what’s next? Undoubtedly, you can refer the technique to specialized services that will repair your “iron friend” for a fee. But as the saying goes: why pay more?

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After all, you can personally disassemble the tool and repair it, since the breakdown may be insignificant, and in the service you will pay a lot for this. But naturally, in order to bring the instrument back to life yourself, you need to be able to understand the reasons for its breakdown and how to troubleshoot it. So let’s learn! In this article, you can find answers to questions regarding situations when the instrument simply stalls after directly pressing the gas. So let’s get started.

The motor gets stuck when you press the gas pedal

A fairly common situation in the process of operating a vehicle is one when failures occur when the gas pedal is pressed, the engine stalls during overgassing, the power unit does not gain momentum, it gets stuck, etc.

To begin with, there can be many possible causes for this kind of malfunction. During the initial diagnosis, it is important to observe the characteristic symptoms, which makes it possible to more accurately and quickly determine the malfunction. Next, we will consider why the engine stalls when you press the gas pedal, and also in what cases the engine stalls when you press the gas.

The engine stalls when you press the gas: possible causes

As already mentioned, certain signs allow you to localize the existing problem. For example, if the “cold” engine stalls after pressing the gas pedal only when the humidity overboard is increased, the cause may well be moisture.

  1. The problem is that water particles can accumulate on the ignition distributor cap. Such accumulations of moisture settle on the inner surface of the lid in the form of condensation. We add that on some cars the cover has a shape that allows the current in the distributor to break through, that is, the discharge is simply not supplied to the spark plugs. At the same time, at idle speed, the internal combustion engine works normally, but when you press the gas, the problem manifests itself. This is due to the fact that the distributor at the time of gas filling starts to work in an accelerated mode, passing a larger amount of electricity. Taking into account the fact that moisture has accumulated in the distributor housing, a failure immediately occurs and the motor is bugged, since a weak spark forms on the spark plugs. To check, it is enough to observe whether such a dip is present on a warm engine, as well as whether a malfunction occurs when it is dry overboard. You can also put the car in a heated garage or parking lot for several hours, and then evaluate the stability of the internal combustion engine after starting and at the moment you press the gas.
  2. Another reason why the unit can swell is that there is no vacuum in the fuel system. In other words, air leakage occurs, which affects the fuel pressure and the composition of the fuel-air mixture. Usually the problem progresses gradually, it can manifest itself on both a cold and a hot engine. The fact is that in order to accurately determine the amount of fuel supplied at a particular moment in time, the vacuum in the fuel system plays an important role.

When switching to gas, the engine stalls

The presence of LPG in a car, along with certain advantages, can bring a number of inconveniences to the driver. One of the most common problems is that the engine stalls the moment it switches from petrol to gas. The problem can manifest itself in different ways. In the first case, the unit stalls immediately, that is, at the time of the transition, in the second, the engine is bugged after the driver presses the accelerator after the transition, that is, when the engine is already running on gas in idle mode.

The reason is that the cold reducer does not vaporize the supplied gas in the proper volume. Please note that one should not exclude the fact that the degree of heating of the gearbox depends on the features of its connection (to the manifold, to the hoses of the stove, etc.), as well as on the level of the coolant in the system. We add that the gas injectors themselves can be another common cause. In some cases they need to be cleaned, in others it is better to replace them with more productive ones.

What is the result

In the event that when the gas is pressed, the engine becomes swollen, you should start by checking the spark plugs. Very often, the problem with the motor is solved by simply installing new spark plugs. Note that the illumination of the “check” light on the dashboard is the basis for computer diagnostics of the engine. The specified diagnostics in many cases allows you to maximally narrow the range of troubleshooting and quickly eliminate the breakdown.

Troubleshooting reasons and features

Why the chainsaw stalls after starting or during operation, you can find out only after performing a check. As a result of the check, you can not only find the reasons for the malfunctioning of the motor, but also possible breakdowns. To find the exact cause, you need to know in what cases a malfunction occurs. Consider such cases, as well as find out the features of troubleshooting.

Stalls when you press the gas

If the engine stalls when gas is added, this may be due to:

  • Clogged or incorrect carburetor setting;
  • Contamination of the air filter, whereby the engine does not have enough air to set speed;
  • Clogging of the fuel filter, which contributes to the intake of an insufficient amount of the fuel mixture;
  • Malfunction of the cylinder-piston group. With an insufficient amount of oil in the fuel mixture, excessive friction of the piston against the cylinder walls occurs, which leads to overheating and the formation of scoring.

In case of overheating with a lack of oil in the fuel mixture, it will be necessary to overhaul the engine, which is one of the most unpleasant consequences. In order to properly adjust or clean the carburetor, you should give it to a specialist, as lack of experience with small parts can damage the mechanism. Do-it-yourself air and fuel filter check.

If the chainsaw does not allow you to develop speed when you press the gas, then it is advisable to try to replace the fuel mixture in the tank, especially if it has been in the tool for a long time.

Stalls under load

If the chainsaw starts to stall under load, then the reason for this is, first of all, an incorrect carburetor setting. If this reason is eliminated, then in addition to problems with the carburetor, the reason for the inoperability of the tool under load may be damage and wear of the crankshaft oil seals or carburetor gaskets, through which air is sucked into the system.

It is recommended to start troubleshooting by checking the oil seals and gaskets, and after that check the correctness of the carburetor setting. Another reason why the chainsaw starts up and immediately stalls under load may be the chafing of special hoses, through which impulse is transmitted from the crankcase to the fuel pump. But such hoses are not installed on all models of chainsaws, but only mainly on professional ones. Replacing this hose is recommended to correct the problem. How to do it correctly is discussed in the:

Why does a chainsaw engine stall when you press the gas

Despite the high performance of chainsaws, sometimes there are moments when the tool stops working normally. In particular, a common situation is the fact that the chainsaw starts to stall when you press the gas. For experienced tool owners, this problem is known, but beginners who are faced with this for the first time will have to seek help from specialists. But do not rush, in the material you can find all the important causes of the malfunction, as well as try to eliminate them.

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Checking the main systems of the chainsaw

If the chainsaw stalled after pressing the accelerator, then there is a breakdown of some element. It is very difficult to determine immediately the cause of such a malfunction, since various factors can contribute to this. The search for the cause should begin with verification activities of the main systems of the instrument, starting from the smallest to the largest.

The first step is to check the presence of fuel in the tank. Craftsmen often get so carried away during sawing that they forget to add fuel to the tank. Even if there is a certain amount of fuel in the tank, and the chainsaw started up and immediately stalled, then the reason for this may be precisely the lack of mixture as a result of clogged fuel channels.

If everything is in order with the fuel, then the cause must be looked for in the spark plug. Unscrew it and inspect the contacts. If there are no signs of dampness and carbon deposits, then you need to check the size of the gap, which should be 0.5 mm, and then there is a spark. If the candle has not been replaced for a long time, then you need to change it, and then start the tool again.

It is also necessary to check the muffler, as clogging can impede the release of exhaust gases, which affects the functioning of the internal combustion engine. The muffler must be dismantled and wet cleaned from carbon deposits. If the above steps do not help fix the problem, then you will need to understand the situation in more detail, since the reason may be a malfunction of the carburetor or the need to adjust it.

Stalls when tilted

The reason that the chainsaw starts to stall when tilted is a lack of fuel mixture entering the system. The fuel pipe is located directly at the bottom of the gas tank, so tilting the tool causes the pipe to simply sit over the fuel mixture. Actually, therefore, when the tool is in operation, it can suddenly stall.

The chainsaw stalls at high speeds. Simple carburetor repair

The carburetor of the instrument is exactly the mechanism that most owners are afraid to disassemble on their own. The reason is that this mechanism consists of many small parts, the location of which must be remembered when carrying out dismantling work. However, not everything is as scary and difficult as it might seem. To understand how the carburetor has to do with the problem of stopping the engine when the engine speed increases, you need to find out its principle of operation, described on the website.

The chainsaw stalls when you press the gas due to the carburetor, if:

  1. Diaphragm damaged
  2. Clogged filter element (mesh in the carburetor). This malfunction may be encountered by owners of tools who do not have a fuel filter or it is simply disconnected from the fuel hose.
  3. Needle sticking, possibly due to outdated fuel mixture
  4. Clogged nozzles or clogged carburetor
  5. Bending of the connecting part connecting the membrane with the needle to supply fuel to the fuel chamber of the carburetor. This part is also called a foot, since under the influence of the membrane on it, the needle moves and the channel opens. During operation, this foot can bend (work out) or break (the engine will not start if it breaks). If the foot is bent, then it can be unbent, but this does not guarantee that the problem will soon recur, therefore it is recommended to replace the part

It is recommended to clean and wash the chainsaw carburetor, and replace faulty parts and elements. After that, you can put it back, not forgetting to also replace (if worn out) the gasket between the carburetor and the adapter.

When you press the gas, the chainsaw starts to stall. Causes and solutions to the problem

The chainsaw is a highly efficient tool for working with wood. However, the high-speed motor of this tool can be used for a variety of other tasks, which is achieved through special attachments. Sometimes a malfunction such as the chainsaw stalls when you press the gas, which can be triggered by some factors. In order not to have to disassemble the tool completely, we will consider all kinds of causes of this problem with a detailed description of how to fix them.

Adjusting the carburetor when the engine stalls while accelerating

If the check showed that the fuel supply system, muffler and spark plug are in good working order, then you need to look for a breakdown in other places. Initially, do not rush to disassemble the cylinder-piston group or change the carburetor. It is recommended to start repairs by adjusting the carburetor. For this, all chainsaws have special adjusting screws. They are designed to adjust the idle speed, as well as adjust the fuel supply at low and high speeds. A detailed description of how to adjust the carburetor of a chainsaw is described on the website.

Today we will consider the features of tuning the carburetor at maximum speed. You can make sure that the chainsaw does not develop full power using a tachometer. If there is no device, then you can make sure that the engine does not develop maximum speed by ear. We are interested in the screw on the carburetor. Which is designed to tune high rpm. It is usually denoted by the Latin letter “H”, which is abbreviated from the word “High” (high or large).

To adjust the high speed of the chainsaw, you will need to perform the following manipulations:

  1. Tighten screw H clockwise until it stops.
  2. Next, you need to loosen it by 1.25-1.5 turns
  3. Run the tool and test the speed performance

It is recommended that the adjustment be performed using a tachometer, but if it is not there, then you can check the maximum revolutions when using the tool under load.

The Chainsaw Chokes When You Press The Gas Cause

After trivial tuning the carburetor, you can fix the problem with the termination of the engine when the speed rises. It should be noted that it is necessary to adjust the carburetor of the chainsaw regularly, depending on the frequency of operation of the tool. It is not difficult to do this yourself, but you can achieve accurate tuning in one case. If you use a tachometer.

Where to look for the reason or where to start checking

All chainsaws have the same design and work according to the same principle. The chainsaw device can be found in this material. It does not matter which brand of tool. Stihl, Husqvarna, ECHO, Champion, Partner, Sturm and others. A malfunction that manifests itself in the form when the chainsaw stalls when the gas is pressed can occur equally both on expensive and high-quality tools and on budget Chinese devices. If a problem occurs, then it needs to be solved.

A chainsaw is a system of mechanisms consisting of parts. Any part in the mechanism can fail, which will lead to partial or complete failure of the tool. If the engine of the tool starts, this does not mean that the chainsaw is completely operational. When the engine stops working when the engine speed rises, then there are corresponding reasons. With this malfunction, attention should be paid initially to a number of the following tool mechanisms:

  1. Gas tank. Make sure there is fuel. If there is sufficient fuel, you should also check the serviceability of the fuel filter, the presence of a connection of the supply hose with the carburetor, and also make sure that the breather is working
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These are the main parts and mechanisms that should be checked first if a malfunction occurs when the chainsaw stalls when the accelerator is pressed. There are other reasons why the chainsaw engine stalls when the gas trigger is pulled. What else can contribute to the occurrence of this malfunction, as well as the features of eliminating breakdowns, we will find out further.

Why else can a chainsaw stall when you press the gas

If, after adjusting the carburetor of the chainsaw, the problem remains, then a number of other factors should be checked. There are enough of such factors, and their verification must be carried out sequentially, moving from the easier to the more complex. It is in this order that we will consider all the reasons why the chainsaw does not develop high revs, and at the same time stalls. It should be noted that at the same time the tool starts up and works properly at idle speed.

  1. Check the chain tension. If the cutting element is tightened too much, this will put a heavy load on the engine. In this case, it will be difficult for a high-speed engine to turn the chain, as a result of which we get its termination. The problem can be corrected if the chain tension is correctly adjusted. The chain should rotate easily by hand, but keep in mind that at XX it should not move. If the chain moves at idle speed, then you need to adjust the upper screw XX
  2. The quality of the fuel mixture and the correctness of its preparation. It is recommended to use AI-92 gasoline for the chainsaw. It is mixed with two-stroke oil in appropriate proportions. Although the mixing ratio is indicated on the label of the container with oil, you must use the data indicated by the tool manufacturer. The optimal value for the mixture of gasoline and oil is 40/1, that is, 25 ml of oil must be added to 1 liter of gasoline. The proportion means that for 40 liters of gasoline you need to add 1 liter of oil. If you do not adhere to the manufacturer’s recommendations, then in the end this negatively affects the operation of the carburetor and the serviceability of the CPG
  3. Silencer. Very often sawfillers do not pay enough attention to the exhaust system of the tool. If the muffler is clogged, and this necessarily happens over time, this negatively affects the operation of the motor. Silencers on chainsaws are collapsible and non-collapsible. In non-separable devices, the connections are flared, therefore, in case of clogging, you need to either replace the part, or flare for cleaning. A clogged muffler affects the operation of the tool, so do not wait until the chainsaw stops starting
  4. Air leaks. Parts and mechanisms of the chainsaw are connected to the cylinder through gaskets. As a result, such connections are airtight, which is important for the operation of the internal combustion engine. Tightening the bolts and nuts that secure the carburetor and muffler will help to verify such a malfunction. Leakage can also occur due to deterioration of the gaskets, which must be replaced on the tool
  5. Fuel and air filters are elements responsible for filtering the air and the fuel mixture. If the air filter is clogged, increasing the throttle opening will not allow enough air to enter the carburetor, causing the spark plug to flood. As a result, the engine will stall when trying to develop maximum speed. If the fuel filter is defective, the required amount of fuel does not enter the carburetor. Its lack leads to the fact that the tool cannot develop momentum, and immediately starts to stall
  6. The presence of a fuel filter. This element can not only become clogged, but also detach from the fuel hose. As a result, it turns out that dirt will get into the carburetor, which will very quickly disable the mechanism
  7. A breather is a hole through which air enters the chainsaw tank, thereby eliminating the creation of a vacuum inside a sealed container. The breather is located on the gas tank cap or can be built into the tank wall. The principle of its operation is such that as the gasoline in the tank is consumed, the tank is filled with air. If the breather is defective, a vacuum is created in the tank, which prevents fuel from being pumped into the carburetor. The breather allows air to pass in one direction, and eliminates the possibility of fuel leakage from the tank. You can repair the part with a thin needle that punches a hole
  8. CPG malfunction. The chainsaw does not pick up speed also if the cylinder-piston group is worn out. To identify this reason, it is not at all necessary to disassemble the engine to look inside. A compressor should be used to check the amount of compression. The normal value should be at least 12 atmospheres, and if the value is lower, then the CPG must be replaced
  9. Ignition System. If the engine starts, it is unlikely that the problem is an electrical malfunction. However, it will not be superfluous to unscrew the spark plug and visually inspect it. The presence of black carbon indicates the need to check the ignition. The first step is to check the gap between the ignition module and the flywheel, the value of which should be 0.25 mm. The integrity of the armored wire is also checked, and if it is damaged, then it must be replaced along with the module. Spark plugs have an appropriate resource, so they need to be changed, pre-setting a gap of 0.5-0.7 mm (indicated in the technical description for each tool model)

If checking all the reasons does not allow a positive result to be achieved, then the carburetor of the chainsaw should be removed and cleaned.

Why the chainsaw stalls when the accelerator is pressed. Summing up

When making an upgrade for the reasons why the saw stalls after you press the gas, you need to take stock of all sorts of reasons and their elimination. The reasons can be conditionally divided into two parts. Simple and complex. You need to start troubleshooting with simple reasons, and end with more complex ones.

You definitely need to start the check from the tank, not from the carburetor, but from the gas tank. And make sure to use a properly prepared mixture. Next, you need to check the serviceability of the muffler and the presence of carbon deposits on the spark plug. After that, you will already have an idea of ​​in which part of the tool you need to look for a breakdown. Perhaps a breakdown is. That you just need to wind up the maximum speed, for which the carburetor is tuned. If this does not solve the problem, then you should check the air filter and clean it.

Pay special attention to the carburetor, after cleaning and possibly repairing which the chainsaw should work like new. If even after this the problem remains, then do not be too lazy to check the amount of compression. Perhaps the engine has a strong performance and needs to be replaced.

This completes the upgrade to restore the tool’s performance, and it is worth noting one more point, such as the use of fuel that is stored for a long time. Many people dilute gasoline with oil, and store the mixture for months, and sometimes for six months. This cannot be done in any way, since the mixture has the properties of aging, and therefore, after its preparation, it must be used within 1-2 weeks. If you do not follow this recommendation, then you will need to often change not only the fuel filters, but also clean the carburetor, but the worst thing is that this contributes to accelerated wear of the CPG.