The benzokosa stalled and won’t start what to do
Malfunctions in the engine
It is quite difficult to accurately diagnose problems in the engine associated with problems in its start, and it is better to turn to a specialist in this field for this.
Violation of the sequence of actions when starting on a cold
If the new chainsaw does not start on a cold one, then the reason may be in the wrong engine starting sequence. As a rule, each manufacturer, in the instructions for the chainsaw, indicates the procedure for starting the chainsaw on a cold one. Basically, it is similar for all two-stroke internal combustion engines that are installed on chainsaws, and represents the following procedure.
- Closing the air damper (necessary to enrich the fuel at start-up).
- Fuel suction using a special primer for this (on some models of chainsaws, the primer is not provided for by the design, and therefore this item is absent for them).
- Turning on the ignition (if you forget about this, then you can mistakenly consider the instrument to be faulty).
- Carry out several movements of the starter, before the first “flash” of the engine (it is important not to miss this moment, otherwise it is possible to “flood” the engine).
- Set the air damper to the open position.
- Start the chainsaw engine.
As with the difficult hot start option, problems in the fuel system can affect a cold start or failure to start. Carburetor adjustment, fuel filter and line contamination are all reasons that cause start-up difficulties.
Diagnose the fuel system, this is the first thing you need in case of difficult cold start.
It is worth paying attention to the quality of the fuel, because when using a mixture of gasoline and oil, in which there is a small amount of water, starting can be significantly difficult or impossible.
The mixture must be used sufficiently fresh, because when storing gasoline diluted with oil for more than a month, its properties are lost and it complicates starting, both on a cold and hot engine. For this reason, gasoline can burn poorly.
Checking the breather and cleaning it.
The breather is another element, from the improper operation of which the chainsaw may not start or stall during the sawing process. This element is located on the fuel tank cap in the area of the air hole. This is a kind of valve that does not allow gasoline to flow out and equalizes the air pressure required for the free flow of fuel into the carburetor.
If the breather is dirty, the working chainsaw stalls, and when it starts, it refuses to start. The thing is that air stops flowing through the hole. As a result, a negative pressure (vacuum) is created inside the fuel tank, which prevents the flow of gasoline to the carburetor.
Defining the problem is pretty straightforward. Disconnect the fuel hose from the carburetor and see what happens to the gasoline. If it flows freely in a good trickle, then everything is in order with the breather. If it is absent or it flows weakly and intermittently, then the reason is identified. the breather is clogged with dirt. You can solve the problem by cleaning the air hole with a regular needle or a powerful jet of compressed air.
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Chainsaw won’t start
Every person who is familiar with gasoline-powered tools knows that sometimes the equipment works intermittently, or it may stall at one moment and will not start again. There are a lot of reasons why the chainsaw does not start, we will try to consider the most common of them.
Chainsaw will not start when hot
In cases where the chainsaw does not start up hot, you need to conduct a visual inspection of all the main units of the chainsaw. Inspection should start with the spark plug. Check the spark, inspect the surface of the spark plug electrode, these steps will help establish the direction in which to look for the problem.
The motor may stall while driving due to problems with the electrical wiring. This reason should be checked in the event that all of the above do not fit. The driver needs to proceed as follows:
- the idle control system is checked, a car malfunction will indicate the presence of corrosion on the wires;
- in case of a recent repair, check that the wires are connected correctly.
Most often, an electric generator or starter fails. In such a situation, the entire mechanism is powered by a battery that cannot cope with such a load and quickly loses its charge. The starter can fail for various reasons:
- the belt broke;
- contact is out of order;
- generator malfunction.
One problem could be a bad battery. Contacts can be, for example, oxidized. Modern cars contain a large number of sensors, which can also fail, thus affecting the vehicle’s performance.
If the on-board computer was recently flashed, then you can blame its incorrect operation. Often such systems only work properly at high rpm. There is only one way out. reset all settings to factory settings.
Clogged air filters
These elements must be changed in a timely manner, otherwise you can be left alone in the middle of the track with an idle car. A clogged filter does not allow air to pass through, which is necessary to enrich the fuel mixture. The engine feels a lack of air and starts to stall.
Checking and replacing fuel filters is a simple task for any driver, even an inexperienced one. If, after the performed manipulations, the engine still does not start, then the reason is of a different nature. You need to continue checking the car.
Clogged fuel filter
There is a situation when the engine may stall, then the car starts, but after a few revolutions it stops again. This behavior of the machine indicates a problem in the fuel filter. It is simply clogged. In such a situation, the fuel supply process is disrupted. Therefore, the addition of gas causes the engine to stop.
For vehicles with an injection system, the fuel pump should be found under the rear seat. In the case of carburetor systems, the fuel system pump must be looked for near the camshaft.
Replacing the fuel filter
Low quality fuel
Let’s not talk once again about the quality of fuel that Russian drivers have to fill in their cars. It can hardly be called even satisfactory. One of the characteristics of a fuel is moisture in it. With a high rate, the car will not be able to work normally and sooner or later it will stall.
To solve this problem, it is necessary to drain the fuel from the car and replace it with fresh fuel. If the reason for the stalled car on the move was precisely in bad fuel, then the car with fresh fuel will be able to continue driving.
Fuel pump malfunctions
Problems with this worker node appear unexpectedly, without any prerequisites. Only a suddenly stalled car will be a sign of a malfunctioning fuel pump. Any attempts to start the engine will be unsuccessful.
If the pump is working properly, a buzzing sound will be heard when the machine starts up. In its absence, you can safely sin on the fuel pump. What if the car stalled for this very reason? Unfortunately, you have to tow it to the service. There is no other solution to this problem.
If “car waste” cannot exit the system normally, then the vehicle will not be able to continue moving. The car will start, but after that the motor will “choke” and the next press on the accelerator will lead to a sudden stop. At subzero temperatures, water can accumulate in the muffler, and in a frozen state, it will interfere with the normal release of exhaust gases.
When the car stalls on the move, the first thought usually concerns the engine. But the reasons for such a malfunction in fact can be much more and they will relate to other working nodes. We have collected all the possible and most common reasons why a car stalls and won’t start:
- full fuel consumption;
- battery problems (malfunction or full discharge);
- malfunction of the ignition switch;
- leakage of working fluids (oil, antifreeze);
- violation of the electrical wiring;
- overheating of the engine;
- malfunction of sensors that monitor the operation of the car;
- fuses may blow;
- the spark plugs are out of order;
- failure of the fuel pump, which stops supplying fuel;
- Air or fuel filters are heavily clogged;
- blown fuses.
You see, the reason for a stalled car can be different.
Malfunctioning spark plugs
Spark plugs need to be checked and replaced periodically. If you do not do this, then with a high probability you can encounter a stalled engine on the move, which will not start. A spark disappears in the candles, which leads to the inoperability of the car. This happens due to ingress of moisture or the end of their service life.
Experienced and conscientious drivers always keep a spare set of spark plugs in the car. To make sure that the candles are malfunctioning, you must perform a number of simple steps:
- we fix the high-voltage wire so that it is one centimeter from the mass;
- the presence of a click indicates the working condition of the candle;
- the absence of a click indicates a malfunction of the candles, even a weak click is a bad indicator.
There is no spark when trying to start a petrol cutter
The spark may disappear due to a malfunction of the spark plug, due to a malfunction of the contacts or wire, due to the displacement of the gap between the spark plug and the wire.
First you need to check the candle. To do this, you need to get it out of the brushcutter and attach a wire to it. This design is applied sideways to the casing of the motor and try to “start” the tool by pulling the starter. Watch carefully to see if a spark appears during these steps. If there is no sparking, then the fresh ignition is inoperative and must be replaced.
Checking the health of the wires is done in the same way, but with a new plug. While pulling on the starter, watch for a spark. If even with a new spark plug does not occur, then the fault is in the wiring or in the contacts. You need to buy new ones and make replacements.
How to start a petrol cutter that doesn’t work?
- If the newly purchased petrol cutter does not start
- After the winter, the petrol cutter stopped working
- If the brushcutter immediately stalls after starting
- There is no spark when trying to start a petrol cutter
- If the brushcutter does not start on a cold
- If the brushcutter does not want to start hot
On the farm, we need a lot of different tools. Anyone who has his own plot and house knows how much is required to maintain it in good and tidy condition. The benzokos is one of those tools that owners quite often want to acquire, since it performs very important and necessary functions in the home area.
But, as with many things, various problems can happen with the petrol mower. One of the most common problems is that the petrol cutter will not start. This can happen for various reasons, and in order to deal with this problem, you need to understand what is the vulnerable part in your case. An important aspect is also whether the brushcutter was started earlier, or problems began to occur immediately after purchase. In any case, you need to consider the common causes of problems, because it is very likely that you can even fix it yourself.
If the brushcutter does not start on a cold
This problem is quite common and can be temporarily resolved with a small action plan. There is a possibility that you incorrectly start a cold engine. Here’s how to do it:
- when starting a petrol brush on a cold one, you do not need to immediately press the gas;
- tilt the tool so that the air filter is at the top;
- press the fuel suction about five or six times;
- after that, you can move the gear lever and set it to the “start” position;
- only after that you should try to start the petrol cutter by pulling the starter a couple of times. It is necessary to pull quickly enough, without making too long a time interval between approaches;
- after the motor has started to run, wait about ten seconds for it to warm up. Next, you can and should disable the launch.
After performing these manipulations, the petrol station should work in normal mode.
If the brushcutter immediately stalls after starting
With such symptoms, several options for the development of events are possible.
First, you need to check if the valve that supplies air to the fuel tank has deteriorated. Quite often, this element becomes clogged, and this leads to the fact that a vacuum is created in the fuel tank. And this, in turn, entails another problem. the fuel ceases to flow into the carburetor and it simply does not have anything to work on. Because of this, what happens is that the brushcutter has the energy to start, but then it stalls.
This problem can be corrected quite simply. you need to clean the air inlet valve to the tank. After that, the petrol cutter starts up with a slightly unscrewed fuel tank cap. If all is well, then the problem has been resolved. But if the tool still does not work, then move on to the next possible reason.
The second problem in which the petrol brush starts and stalls is a malfunction or clogging of the fuel filter. First clean this filter, and then revise the parts in the carburetor so that there are no breakages.
If, even after cleaning the air filter, the petrol cutter starts to work, you need to get it out and try to turn it on without it. If it starts, then you just need to change the filter for fuel.
After the winter, the petrol cutter stopped working
If, after the winter period, the petrol cutter stops starting, then most likely you will have to conduct a full inspection of the inside of the tool. The most important components that could deteriorate after cold weather are the fuel system (air filter, fuel filter, carburetor). In order to try to fix a broken brushcutter, it is necessary to purge all filters, as they often become clogged. In addition, it is the filters that suffer primarily when the tool is idle for a long time.
In the case when this is not the first time you have problems with the brushcutter after a long period of inactivity, there is a possibility that this may be the result of using unsuitable or low-quality fuel. The user manual will definitely indicate the type of gasoline that is most suitable for the operation of your petrol cutter. Buy fuel only at proven gas stations, as small businesses often sin with the quality of their product. And the use of low-quality gas station will significantly reduce the duration of the work and life of your petrol cutter.
Even if you use only high-octane high-quality gasoline, but prepare the fuel mixture in advance, this is one hundred percent the cause of the problem, since the ready-made solution of gasoline and oil cannot maintain the required qualities for a long time. The mixture should be made clearly in the amount that will be used at one time. If there is fuel left after work, it must be removed, but it is better to calculate more accurately in order to use it completely.
If the newly purchased petrol cutter does not start
Not only tools that have already seen life can suddenly stop working. Sometimes we find problems even with the things we just bought. Of course, if no one has ever used a petrol cutter, then you can easily give it back under warranty or change it to another, serviceable.
First, make sure that you did everything correctly, re-read the instructions carefully and analyze your actions. Pay special attention to the section on turning on the petrol brush for the first time, how to interact with it, what to do with a new purchase. Very often, the very first launch of a new tool differs from the subsequent ones, because of this, it is better to first read how to do it correctly.
Also, a very important section is the one in which it is written about refueling petrol cutters. It is very important to carry out these operations correctly and on time, to use high-quality and suitable fuel. The first gasoline pump may also differ slightly from the subsequent ones, so read this information too.
After you study as much information as possible from the instructions, you will be able to understand the principle of operation of this product, and it will be much easier to work with it. Never neglect to read the important text that manufacturers attach.
The most common reasons that prevent a petrol cutter from starting are as follows:
- unsuitable brand of gasoline or its poor quality;
- unselected proportion of gasoline and oil. This is one of the important parameters for petrol cutters, so make sure that everything is carried out according to the instructions;
- the filter is clogged. Because of this, the fuel will not be additionally cleaned, and small debris getting inside is not so uncommon;
- there is no spark. It can disappear for various reasons, below we will consider whether you can do something yourself at home.
In any case, you will need to analyze your early actions and see what can be done before handing over for repair or replacing the tool.
Reason 3. Too much moisture got into the fuel
If the gasoline contains too much moisture, then this mixture, getting into the combustion chamber, does not burn properly, disrupting the proper operation of the engine. If you recently refueled, and before that the car worked normally, then the problem is most likely precisely in the fuel.
There are two ways to solve this problem:
- The first is to drain the gasoline from the fuel tank. Then pour fresh fuel into it.
- The second is to try to dilute it with normal gasoline and keep driving with bad fuel until the car is using all the fuel. Which, of course, is not recommended for obvious reasons. Next time refuel at another gas station.
Second reason. Fuel pump
Unfortunately, there is no warning that your fuel pump is about to fail. The first time you notice any problem is only after the car stalls. And with this malfunction, the car can no longer be started again.
The serviceability of the fuel pump can be determined by the characteristic slight buzzing after turning the key in the ignition switch for the subsequent start of the engine. If you don’t hear any noise from the fuel tank when you try to start your car, it is likely that your pump has failed. Since with this malfunction the car will not go, then all that remains for you is to tow the car to a car service.
First cause. Generator malfunction
A faulty alternator is one of the most common causes of a car stalling on the move. Most drivers assume that if the generator fails, the car will not start. In practice, everything is a little different, if the battery is charged, your car can be started, and it will work even with a faulty alternator.
And the thing is that at this moment the car is powered not from the generator, but from the battery. But this will ultimately lead to the fact that the car stalls at the most inopportune moment and will no longer start due to a low battery charge.
Checking the battery level is very easy with a voltmeter. The check should be carried out after several hours of parking. All manipulations are carried out with the engine turned off and with the headlights off. Open the hood, and connect a voltmeter to the battery terminals. To do this, the positive terminal of the voltmeter must be connected to the positive terminal of the storage battery, the negative terminal to the negative terminal.
Remember that fully charged car batteries must show a charge of at least 12.66 volts. At voltages below 12 volts, the car will most likely not start. And when measuring the voltage on a running machine, somewhere between 13.4. 14.4 volts are considered normal parameters. A value lower or higher indicates a malfunction. Look for a problem in the alternator or regulator relay.
The car stalled on the move and will not start: 6 possible reasons for this phenomenon
23 January 2017 Category: Car Fault Diagnosis
A car that stalls on the move can create a dangerous situation no matter where it happens.
If you are on the move, even at low speed, and your car suddenly stalls, it is possible that someone, not having time to brake in time, will crash into the rear bumper of your car. And if a car stalls on a busy highway, then there is a high probability of getting into a very serious accident.
If your car stalls on the move and won’t start, the possible causes can be very varied. In this article, we will analyze the 6 most common reasons for such a car’s behavior on the road, and also consider methods for solving this problem.
The sixth reason. Problems with the ignition distributor cover
The distributor cover plays an important role in the performance of your engine. A cover is required to protect the valve and its inner rotor. The distributor cover supplies voltage to the spark plugs. If something is wrong with the cover, the engine may stall or triple. You can also identify problems by the following symptoms:
- The presence of breakdowns in the lid;
- Poor hull condition, namely cracks;
- Wear or corrosion on contacts;
- Condensation in the body itself.
If the reason is contacts or cracks, then sometimes it is enough just to clean the contacts and treat the cover with a sealant. Of course, this will not completely solve the problem, but as a temporary measure, it is fine. Since this problem will return again and, as a rule, at the most inopportune moment.
Fifth reason. Low fuel pressure
If your vehicle stalls on descents or ascents when driving in hilly terrain, the problem may be low fuel pressure. With this problem, your machine will not work reliably.
There may not be many possible reasons for this:
- Excessive wear and, as a result, a decrease in the performance of the gas pump.
- Clogged fuel system, including pump and filters.
- Fuel tank vacuum.
Typically, the car can easily start and drive on a flat road. However, when going uphill, the car is likely to stall due to low pressure in the fuel system.
Sometimes replacing the fuel filter helps to correct the situation. This is one of the simplest solutions. You can also try adding a little injector cleaner to the fuel tank, but there are risks involved.
Fourth reason. Wiring
If the car stalls on the move and does not start, and none of the above reasons is suitable, then bad wires may be to blame. The first thing to do is check the idle speed control system for corrosion on the wires. If corrosion is present, then it is time to replace the wiring. It is also equally important to make sure that the wires are connected correctly if any repairs have been made.
Other possible reasons due to which the car can stall on the move
Remember that a car consists of many interconnected mechanisms and assemblies, and the car can stall on the move not only due to engine malfunctions, but also due to other car systems.
Here is a list of equally common malfunctions that can lead to engine stalling:
- Overheating of the engine;
- Defective coolant temperature sensor or crankshaft position sensor.
- Fuse blown.
- Oil or antifreeze leaked out.
- Throttle valve problems.
- Clogged spark plugs.
- Wear or damage to the elements of the KShM or timing.
- Clogged fuel or air filter.
And even this is not the whole list of problems. If the car stalls on the move and does not start, a possible reason may be that you simply ran out of gasoline. Yes, you can get into such a situation if you do not refuel on time.
These are just a few of the problems that a driver may encounter on the road. But we hope that there will be enough of them to solve your problem. In any case, if you are a novice driver and are not well versed in the device of cars, then the best option is to call someone who knows this topic better than you. We hope this article was helpful to you. We wish you success and good luck on the road!
The engine does not start in cold weather
Starting a car in a severe frost is difficult, but not hopeless. If the temperature outside is 15 ° C and lower, then any battery loses 50% of its power, this is another problem why the car does not start well. To “wake up” the car, you need to turn on the high beam for 10-15 seconds. This will allow the electrolyte in the battery to warm up for additional energy.
Attention! Never turn the starter for more than 5 seconds. Otherwise, there is a chance to completely drain the battery or fill in the candles, which is unacceptable at low temperatures. If the car is in good condition, then from the 2-3rd attempt everything will work out, and your car will start.
It happens that the battery has completely sat down. This can be understood if the car has stalled and will not start. In this case, you will need a cigarette lighter. If an injection engine is installed in the car, it will be more difficult to “light up” because of the large amount of electronics. It is possible to “light” from another car even when the engine is running. The main thing is not to confuse polarity and order. However, if you made a mistake and mixed up the signs, run faster for a new battery.
After connecting to the donor machine, you need to wait 10-15 minutes for your battery to charge. After. we disconnect from the car and try to start. If the engine is running, give it a couple of minutes, otherwise it will stall.
Remember that starting the engine in subzero temperatures equals 500 km. Take care of your car.
A common problem when starting the engine is low voltage or no voltage at all. First of all, you need to check the fuses. Not every car depends on the safety system to start the engine, but it is still worth doing.
Over time, any wire connections to the battery can oxidize or become dirty. This will result in no current flowing through. Clean the battery terminals and wire connections with a dry cloth or sandpaper. Then try to start the car again.
If the terminals and wires are in order, then it is worth checking the battery. A dead battery is a common problem. You can check the battery charge with a tester or by external signs. In order to check the battery performance, insert the key into the ignition switch and try to start the engine. “Low torque” starter. a clear sign that the battery is running low.
There are several ways to fix the problem with a flat battery. Light a cigarette from another car or try to start the car from a tug. The second method is only suitable for cars with a manual transmission. If the car does not start, you will have to remove the battery and charge it. Do not forget that the battery life is no more than 5 years.
So, if all of the above is in good condition, check the ignition. First you need to test the ignition coil. It is checked with a multimeter. If there is no such device, then you can call the nearest car service.
It happens that moisture accumulates in the ignition distribution cover, this can be the reason why the engine does not start. The cover must be removed and checked for moisture. Any moisture or condensation that appears must be removed with a dry cloth. Once you had to remove the cover, you should check it for cracks. A cracked cover should be replaced with a new one.
The wires to the ignition coil can be damaged or allow electrical current to flow. Bring the tester to the insulation of the wires. Good wires will not conduct current through the insulation. If the tester shows that the wires are faulty, you will have to buy new ones.
Plugs are intended for ignition of fuel-air mixtures. They are found in different types: spark, incandescent, semiconductor and others. If your car does not start, then a long rotation of the starter will lead to filling the candles. After which they will need to be changed. Otherwise, working with flooded candles will harm other parts of your car.
The car will not start: possible causes and methods of their elimination
A car in our time is not a luxury, but a means of transportation. Every driver faced a problem when his “iron horse” refused to go. This is the most unpleasant situation due to which you can be late for work, miss a vacation with friends or other important event. So what if the car won’t start? To begin with, do not panic, many problems can be solved on your own and without visiting a car service. So, if the car does not start, you need to look for the reasons under the hood.
The timing is responsible for the operation of the engine in the car. Sometimes a metal chain is installed instead of a belt. Both are responsible for the rotation of the crankshaft and camshaft.
When using a car, every part wears out over time. Timing belt. not an exception. Under constant load, it wears off and can break. Such a violation will lead to damage to the engine valves, and in the future to its breakdown. And then a problem arises: the starter turns, the car does not start. What to do? A complete timing repair or replacement of a valve belt can be quite expensive. Therefore, to prevent such a problem from happening, it is advisable to change the belt every 2 years (this is about 60,000 km of run).
Motorized scythe won’t start (diagnostics and repair)
It is not worth delaying the replacement if you do not want to harm your favorite car. Replace the belt with a professional so as not to stretch.
Does the car start and stall, or won’t it start at all? This may be the case if there is no compression in the engine. Compression in an engine is the ability to hold the pressure that is created in the combustion chamber as the piston rises to its highest dead center. Compression is measured with a special device. a compressometer. Whether you need such a diagnosis can be determined by external signs. Blue smoke from the exhaust pipe, unstable engine operation or idling speed does not stand still. these are all reasons for poor compression. Such an engine will use more oil and fuel. If you put your hand on the exhaust pipe and small drops of oil remain on your hand, then this is another symptom of engine malfunction. It is best to consult a specialist. After all, the reason may be a burned-out piston.
Fuel system problems
Car won’t start? Is the starter motor running at full power, but the engine still won’t start? Then the problem should be looked for in the fuel supply. Electronic fuel delivery is often used on modern cars. The problem is that it will be difficult to diagnose on your own. Diagnostic equipment is expensive and you need to go to a car service. But there are signs by which you can understand what kind of malfunction in the fuel system, thereby you will save money on diagnostics.
The very first thing you should do is check all the electrical wires under the hood. It will take a lot of time, but it’s better than spending a lot of money for diagnostics. Each injector that supplies fuel to the system has its own separate wire. Check all wires with a tester, and also pay attention to the insulation.
Car won’t start? The cause of the malfunction when starting the engine may be in the operation of the fuel pump. You can check its performance only on special equipment, which not every driver has. You can try to find out the reason by checking the voltage on the positive wire of the fuel pump. It may be missing due to a faulty fuse. If the fuse is good and there is no voltage in the wire, then this problem can be solved by replacing the fuel pump motor relay.
A working fuel pump does not mean that the fuel system is in order. The filter may become clogged and not deliver fuel. To prevent this from happening, it should be changed every 20,000 km. You can replace all these parts yourself. Why won’t the car start if the entire fuel system is in good working order? We do not despair and look for the problem further.
Checking the fuel system
The fuel system must be checked in stages, thereby eliminating malfunctions of the following elements:
- electric fuel pump;
- mechanical fuel pump;
- fuel filters;
- fuel lines;
You should also not exclude the possible leakage of air into the fuel supply system. In the case of a diesel engine in winter, there is a high probability of paraffinization (freezing of diesel fuel), which simply cannot be pumped through the system in this form.
On cars with an injector, after turning the ignition key, the sound of the electric fuel pump is usually heard clearly for a couple of seconds, which pumps gasoline into the power system. In the event that the fuel pump does not buzz, then the failure of the fuel pump motor is likely or there is no electricity supply to the pump. In this case, it is necessary to check the fuel pump, fuse and fuel pump relay.
On cars with a carburetor, it is also necessary to check the gas pump, which is structurally driven from the camshaft. The check is carried out by removing the hose from the carburetor inlet fitting. You can also remove the hose from the fuel pump outlet. Next, you need to pump fuel using the manual pump lever, which is available on the gas pump. If everything is normal, then gasoline should flow.
The car will not start when the starter is working normally: possible causes
To begin with, at the beginning of the test, you should once again make sure that the starter is working properly. During its operation, when trying to start the engine, there should be no clicks, hum and other extraneous sounds. A serviceable starter should turn the motor with the characteristic hum of the starter electric motor, and do it smoothly, without gaps and failures. If, during attempts to start the internal combustion engine, the indicated signs are noticed, then the malfunction should be looked for in the starter.
After making sure that the starter turns and the engine does not start, it is necessary to proceed to a detailed check of certain vehicle systems. You should start with diagnosing the engine power system, as well as checking the ignition system and some sensors in the electronic control system of the internal combustion engine. In other words, an engine with a working starter often does not start as a result of the fact that no fuel enters the cylinders or the fuel does not ignite for certain reasons.
Diagnostics of the ignition system
In the event that the starter turns and gasoline is supplied to the engine, but the engine does not start, the operation of the ignition system should be checked. You can exclude spark plugs and high-voltage wires from the list, since at the same time all these elements cannot fail.
For this reason, it will be enough to unscrew one spark plug from the engine, and then check for the presence of a spark. This procedure involves removing the plug, after which the plug wire is put on it. Then the candle skirt is applied to the engine block, after which the engine is scrolled from the starter. The presence of a spark will indicate that the ignition system is working properly. The absence of a spark on the spark plug will indicate a malfunction of the ignition module of an injection engine or an ignition coil on a motor with a carburetor.
New brush cutter stuck… what’s wrong?
To check the ignition coil of a carburetor engine, you will need to take out the center wire and bring its end 5-7 mm. to metal. After that, the engine is cranked by the starter. The absence of a spark in this case will clearly indicate a problem with the coil. If there is a spark, then the next step in the diagnostic process is to remove the distributor cover and assess the condition of the device.
The starter motor turns the engine, but the engine does not start
Malfunctions that appear at the time of starting the engine are quite common during the operation of a vehicle, regardless of the type and design features of the installed power unit (gasoline, diesel, atmospheric or turbocharged engine, hybrid engine, etc.). One of the most common situations is that after turning on the ignition and turning the key in the lock to the ICE start position, the starter turns normally, but the engine does not start.
A feature of this kind of breakdown is a certain complexity of fault localization. The fact is that it is much easier to look for a problem if, for example, the starter makes a sound, but does not turn the engine, or the fuel pump does not pump after the ignition is turned on. In any case, the existing problem needs to be solved. Next, we intend to talk about why the engine may not start when the starter turns the crankshaft well.
Other reasons why the starter turns, but the engine does not start
If fuel is supplied and the ignition works, but the engine does not start from the starter, it requires a thorough diagnosis of electrical circuits and elements. The reason may be a blown fuse, power failure, failure of the control relay, oxidation, corrosion or destruction of contacts, etc. In some cases, on injection vehicles, the ECU itself fails by the engine.
Also, do not forget that ECM sensors that interact with the ECU can fail. As an example, consider the case where the engine grasps a little when trying to start, but does not start. At the moments of setting, there is a strong shaking of the motor. The culprit in such a situation may be both the DPKV (crankshaft position sensor, Hall sensor) and the starter itself. In the first case, a faulty sensor sends incorrect signals to the control unit, as a result of which the ECU is not able to correctly adjust the air-fuel mixture and fuel supply.
In the second case, the so-called “leads” may be to blame. The indicated electromagnetic inductions, for example, from the starter to the crankshaft sensor, do not allow the electronic device to form the correct signal to the ECU. If there are malfunctions in the operation of the DPKV, the engine will not start, although the fuel will be supplied normally, and the starter itself will turn the crankshaft well. Also pay attention to car alarms, which can block engine start due to failures in the main unit or an additional immobilizer.
What to do if your petrol lawnmower won’t start?
The most important point when using any equipment is to comply with the basic rules of operation and its timely maintenance. This approach will ensure that your petrol lawn mower is working properly and for a long time. Still, sometimes unforeseen situations happen, and the device for some reason does not want to start. In our article we will tell you about the possible causes and ways to fix this problem.
Faults that you can fix yourself
When your petrol lawnmower won’t start. first of all, it is necessary to check the presence of fuel in the tank. If it is missing. top up to the desired level. Often, when the device is not used for a long time, gasoline “runs out”, so it must be completely drained and refilled with new. This procedure must be done carefully so that fuel does not get on the engine, as this can lead to ignition in the future (when the engine heats up). Which gasoline is better to use, you can find out from the technical passport of the device.
In order for the unit to start, you need to pump fuel with a primer (if available in this model) into the carburetor and set the maximum speed. You need to start the technique carefully. The starter cord must be smoothly pulled out until it stops, then pull it towards you with one even sharp movement.
A problem can occur if the air damper is not correctly positioned during the first start. Depending on the air temperature, it is completely closed or set to the middle position (above 30 C). Then it must be fully opened.
Check the air filter for dirt. To do this, turn off the machine and disconnect the wire from the spark plug. Unscrew the cover and remove the filter. Rinse it with gasoline and dry it thoroughly, or simply replace it with a new one. Remember that it is recommended to change the air filter after every 25 hours of operation.
Another reason your petrol lawnmower won’t start could be a faulty spark plug. Perhaps she was just flooded with fuel. In this case, unscrew it, clean it and check for a spark. It may not be present when the spark plug is filled with fuel. Place choke control handle (if equipped) in the CLOSED position and start the engine. If this does not help, it is better to seek help from a specialist.
Try to constantly inspect the bottom of the machine, as any damage to it may cause the engine to stall.
If your petrol lawn mower started up normally but stopped working almost immediately, it is likely that the crankshaft or piston is stuck. Another reason may be an insufficient amount of oil in the crankcase. We recommend that you manually move these parts and check the oil level with a special dipstick, you may be able to correct this problem.
However, remember that the replacement and repair of all faulty components and elements should be entrusted to professionals from authorized service centers. Never do it yourself.
If you want to talk to a specialist and get advice on the issue that has arisen, call us by phone: 7 (495) 135-29-39 every day from 10.00 to 20.00. We will provide all the information you need.