Non-device diagnostics of malfunctions of passenger cars. Why the engine does not "catch" when starting the engine: the main reasons and what to do for the driver The engine does not catch when starting the engine

Managers must judge the common good, not profit or competitive advantage. Most of the companies that failed did not maintain this balance. Each person, firstly, is a member of society in front of one of the companies. Thinking only of the company will surely lead to failure.

There are four ways to cultivate the ability to judge good. One of them is experience, especially one that is achieved by facing adversity or failure. Yanai constantly reminds himself and others of the problems he overcame - giving up in a single store in the country, giving up a bank loan, being nudged by powerful wholesalers, facing bankruptcy many times. Yanai is so proud to have made mistakes, which he called his first book, One Victory, Nine Losses.

What could be the reason that I twist the starter, but the injection engine does not start - blog readers often ask me? One of the possible troubles is associated with the flooded. This often happens in frosty weather. It is required to wait until they are dry enough. The engine can be cranked with the starter by first removing the injector connectors.

The third method is the relentless pursuit of excellence. He never cut corners. Finally, judgment can be cultivated by being well versed in liberal arts such as philosophy, history, literature, and the visual arts. Management is a liberal art, as Peter Drucker said; liberal because it deals with the fundamentals of knowledge, self-knowledge, wisdom and leadership; because it is also about practice and application. To keep an eye on what we preach, we launched a senior executive program in Tokyo a few years ago, whose core curriculum consists of Aristotle, Machiavelli, Heidegger, and other classics.

Diesel

The most difficult to start a diesel engine. The fuel in it ignites according to a slightly different principle. The chambers in which the diesel fuel burns up are heated to very high temperatures, after which the diesel fuel is supplied to them together with air, which is ignited by compression. In cold weather, it is advisable to heat the air in the cylinders with glow plugs. If this is not done, then the car may start, but immediately stalls or works unstably until warming up.

Teaching integrity in the classroom

The Knowledge Forum, as we call it, takes place primarily on the Hitotsubashi campus in downtown Tokyo and is essentially a ba where leaders can build character and integrity. Takao, 90 minutes from downtown Tokyo, for a day of exercise designed to build teamwork. During the intensive 15-month program, leaders share their most compelling life experiences and identify moments of failure and success, both at work and outside of work.

This helps them empathize with each other. Leaders share their most compelling experiences and identify moments of failure and success. They discuss Peter Drucker's work and meet 12 B-School teachers for weekly coaching sessions. The Knowledge Forum is time consuming on the part of managers as well as teachers.

Even the slightest frost or freezing temperature can be enough for starting problems. V diesel engine you need to start by checking the condition of the glow plugs. We start by checking the glow plug control unit. For this we need a control lamp. We connect it to the mass and power of the candles, and then turn the key in the ignition lock. In the case of a working unit, the indicator of the control lamp will light up.

Over the next nine months, members meet frequently to discuss issues and chat over drinks, golf, and karaoke. The full-day sessions, held once a month, end in a public atmosphere to stimulate broader discussion.

Wise leaders can understand the point

There are other similar programs in Japan. Before making judgments, wise leaders quickly understand what lies behind the situation, project a vision of the future or consequences, and decide on the actions needed to realize that vision. Practical wisdom allows them to see the essence and intuitively understand the nature and meaning of people, things and events.

Other diesel engine starting problems

Another reason why the starter spins for a long time, but the engine fails to start, may be caused by the airing of the high pressure pump. First you need to check if there is power to the kill valve. We turn on the ignition and use the already familiar control lamp for this. When connected, the valve should emit clicks, and their absence may just signal its malfunction.

A prime example of how Soichiro Honda, founder of the company that bears his name, did this in a photograph hanging in the Auto Industry Hall in Dearborn, Michigan. He shows it on the motorcycle track, crouching down to put himself at eye level with the rider passing at full speed. Honda has hands on the ground to feel the vibration, and its ears are raised to absorb the sound of the engine. Having grasped the essence, you need to pay attention to detail and perseverance. “If you are going to do something, you have to do it ruthlessly,” says Yanai. Do what is 100% right, focus on the little things, and keep getting back to basics.

It remains to check the fuel line - we unscrew either the return line of the injectors, or the plug. If there is an option for manual pumping, it should be carried out until diesel fuel flows and the air stops flowing. If it is not possible to bleed, then it makes sense to check the fuel filter, which is often clogged with paraffin from the fuel or ordinary dirt.

If you do not, you will not be able to proceed to the next stage. The secret of success is sophistication in everyday affairs. It is also important that leaders perceive universal truths from detail and detail. In the famous story, he noticed an entire family - father, mother and children - on a scooter, driving dangerously around cars on a rainy day in Mumbai. He knew that the cheapest car cost five times as much as a scooter, and that families near the bottom of the income pyramid couldn't afford it. Tata realized that people here buy cars if his company makes them at a price they can afford.

Friends, these are the main reasons why the engine may not start even with prolonged rotation of the starter. If you have not yet joined the blog subscriber base, I recommend that you do so right now. In the coming days, we are expecting new useful materials from a wide variety of areas related to the car and its maintenance. For today we will say goodbye!

To cultivate their ability to understand a problem, leaders must practice the three mind exercises. The first is to relentlessly ask what the root of the problem or situation is. Questions are about specifications such as "What horsepower should this engine be?" The second routine is to learn to see trees and forest at the same time. In the words of Toshifumi Suzuki, chairman of Japan's Seven-Eleven: It's not good if you just see a tree, not a forest. Many people mistakenly believe that managing individual elements means managing one element.

Surely every driver knows what an unpleasant problem it is when the engine completely refuses to start. Yesterday the car started up, but today it completely failed. This trouble can happen anywhere and absolutely suddenly, but before troubleshooting, you need to know the reasons why the car will not start. In this article, we will analyze why the car does not start, the causes and remedies.

But you need to put the item in the store as a whole. God can live in detail, but leaders must never forget the big picture. The third involves the construction and testing of hypotheses. Since each store serves a different customer and faces different situations at different times, employees cannot rely on the rules set by headquarters. They also can't mechanically fill the shelves by ordering the same amount of the same items every day.

Wise leaders create shared contexts

Every time an employee assigns an order, she is encouraged to hypothesize what the customers want. Front-line leaders continually create opportunities for senior leaders and employees to learn from each other. Those involved in the exchange of information build short-term relationships and try to create new meaning.

First of all, you need to immediately drop the panic. It does not matter where it happened, but if you are on the roadway, then the first step is to turn on the alarm, and also try by all available means to remove the car from the road. Now you can search with peace of mind for what reasons the engine of your car will not start.

For example, an informal ba might take place in a bar or pub where strangers talk casually about their immediate problems or concerns, sometimes provoking ideas or solutions. Each member sees himself in relation to others and tries to subjectively understand his views and values. As many as 30 members of the project team get together for three days and nights in a hotel or hot spring ryokan. In the evenings, they drink sake and visit the communal bathhouse. Even though there is no agenda, people usually start with poor reading of their bosses and exchange of frustrations.

No matter how trite it may sound, you still need to make sure that there is really fuel in the tank... If you are 100 percent sure that the tank is full, then now is the time to find out if the fuel is suitable for the supply system. A clogged fuel filter and a faulty fuel pump can often cause a car to fail to start.

As the participants begin to spill their guts for the sake of sake, it is not unusual for battles, verbal or even physical, to break free. On the second day, barriers begin to melt as people begin to understand each other's motives and feelings. They become more inclined to listen and empathize.

By the third day, they were often making an inductive leap, overcoming their personal problems and embarking on a collective idea of ​​how to solve the problem. The ba can be from top to bottom or bottom to top. He was open to any employee registered on the company's intranet and wanted to discuss the importance of doing good for employees, the company and society. Bottom line, which companies outside of Japan can find more convenient to use, gives employees a direct experience of using products and services.

On carburetor cars, it is quite easy to check this by removing the supply hose and pumping gasoline with manual pumping. If gasoline does not go, most likely the fuel pump is faulty or simply overheated. In the latter case, a short stay will help solve the problem, but if you are in a hurry, you can cool the pump well with water.

Employees learn how patients behave, take medications, bathe and communicate with caregivers. They gain a deeper understanding of the needs of patients and their families, as well as the mission of the human health company as formulated by Haruo Naito, President of Eisai. One employee told us: I was completely focused on drug development, but in the hospital, the focus was not on drugs. Drugs are only useful in certain situations.

Wise leaders connect the essence

The training gave me an update on the purpose of drugs and how we should develop them. Front-line leaders must be able to communicate in a way that everyone can understand. The essence of the situation is often difficult to express, so they must use stories, metaphors and other figurative language. This allows people to base themselves in different contexts and with different experiences in order to understand things intuitively.

As for injection engines, it is enough to turn the key in the ignition lock and remove the cap from the fuel rail. If the gasoline did not go, but the pump worked, then it did not create the necessary pressure, which means that only a replacement will help it. Unfortunately, troubleshooting these problems along the way is quite problematic, but possible. This is due to the fact that no one will constantly carry a spare gas pump with them, although experienced people probably do so.

Suppose you are lucky, gasoline is running, but the car does not start, then another problem is possible - there is not enough air. As you know, any internal combustion engine needs oxygen. It is used for the combustion of gasoline as an oxidizing agent, and when a mixture of fuel and air enters the cylinder, this ratio should be kept within 1 to 15, respectively.

It is not difficult to guess that if there is too little air, the fuel simply cannot ignite, which means that the engine will idle, pointlessly filling the cylinders with gasoline. To make sure that this is true, it is enough to pull out the air filter, and then try to start the engine. If it starts, it means that the filter was too dirty and did not have the required capacity.

Regardless of the type of engine, as a temporary measure, you can try to shake out the filter and reinstall it, and then continue driving to the place of repair. If this measure is not enough, then you can try to blow through the filter element using a compressor or a conventional road tire pump.

In this case, you can do anything you want, but in no case do not drive the car without air filter!

If the engine does not start even without a filter, then the ignition system is faulty. To evaluate the operation of this system, you can unscrew one of the candles, and then examine its condition. The spark plug electrodes must not touch each other and must be clean. If any deposits or blackness are visible on them, then such a plug must be replaced and try to start the car again. If it is not possible to change the candle, then it can be heated on fire for a while and wiped with sandpaper. Alternatively, you can use the rubbing part of the matchbox. As a rule, after that, the engine of the car starts up easily and can safely get to the place of high-quality diagnostics.

In most cases, a black plug means not only plug failure, but also an increased fuel content in the mixture, which most often indicates an incorrect carburetor adjustment.

But if you are sure that the candle is not the cause of the problem, then you need to check for a spark.... It is worth warning right away that this can not be done on every car, since the ignition coils of some cars do not withstand such a load. To do this, grasp the high-voltage cable with one hand and slightly lean its contact against the cylinder block so that there is a distance of at least 5 millimeters between it and the latter.

Ask your partner to turn on the starter for a short time, if you see a spark, then the ignition system is in perfect order, or the spark plug still needs to be replaced. If there is no spark, then check the condition of the cable, wipe it and the distributor from moisture, and open the distributor cover. In a contact ignition system, it is enough to simply clean the contacts, which usually always solves the problem. In BSZ, it makes no sense to do this and diagnostics must begin with checking all contact connections, and then start changing one element after another one by one.

Otherwise, if the candle is black and wet, then you simply "flooded" it. This is a very urgent problem for those drivers who are used to starting the engine at the same time as pressing the accelerator pedal. Because of this, their car firmly ceases to "grasp" and then the case ends with a planted battery.

To avoid this, it is necessary to dry the candles. To do this, they are twisted and warmed up on a gas stove. Then they are thoroughly wiped, after which they are installed on the car. If you are in a hurry, you can use a trick that involves quickly drying and blowing out the cylinders. To do this, press the gas pedal to the floor and turn on the starter. After 2-3 revolutions of the engine, gradually release the pedal, it is at this moment that the motor, as a rule, grabs.

If you are the owner of a car with an injection injection system, and it does not start, then pay attention to the dashboard. The corresponding "Check Engine" icon may light up on it, which indicates specific reasons. You can find out the exact location of the breakdown using a diagnostic computer.

Starter malfunction

More serious problem when the starter motor does not crank the engine at all... Here really
there can be a place for panic, however, many reasons are completely removable.

So, you turned the key, but instead of the usual turning on of the starter, nothing happened, then check the reliability of the battery terminals. Most likely, they just came off, which means that they need to be tightened, in some situations even cleaned if they are oxidized.

Among the reasons for the failure of the starter may be the fact that the battery is simply discharged.... In this case, it will sluggishly spin the engine, or even at all, only the retractor will work. If you are confident in charging it, check that all contact connections are secure.... Many vehicles are equipped with a special starter relay that reduces the current and reduces the stress on the conductors. It is this that can have poor contact if it was established on its own.

You can find out about this by the fact that even the retractor with a characteristic click did not work. If the retractor is triggered, but the starter does not turn, then try again. Many cars, due to their age and "cleanliness" of contacts, are not always able to start the first time. Otherwise, the starter must be cleaned, and maybe even replaced..

Sometimes the car will not start due to the fact that the starter turns, but does not turn the engine. This means that a special ring fell off the flywheel, which caused the bendix to slip. Only replacing the faulty unit will help here.

If your car still won't start even after the above measures, then the reasons lie elsewhere. Only service station employees will help you find out about this. To get to the station, just ask a friend to take you in tow, and then head to the nearest repair site.

Malfunctions that appear when the engine starts are quite common during operation. vehicle regardless of the type and design features of the installed power unit(gasoline, diesel, or engine, etc.). One of the most common situations is that after turning on the ignition and turning the key in the lock to the 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 well.

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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.

Checking the fuel system

The reasons for the difficult start of a cold engine. List of faults. What you need to check to diagnose and more accurately determine the problem.

As a rule, during the operation of any car, starting problems are one of the most common malfunctions. In this case, quite often the culprit may not be the engine itself and its components, but the starter. However, it should be borne in mind that in such a situation, the starter either does not turn the engine at all, or it copes with its task with low efficiency.

The rotation of the motor from the starter after turning the ignition key can also be accompanied. Note that if in this case the reason is more or less obvious, then it is much more difficult to quickly determine the problem when the starter turns and the car does not start. In this article we will talk about how to find a hollow if the starter turns normally, but the engine does not "grab".

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The engine turns from the starter, but does not start: reasons

So, if the car suddenly began to experience problems with starting, then at the initial stage, many drivers try to attribute the problem to bad fuel, bad, etc.

Please note, only in some cases, replacing candles or refueling quality gasoline allows you to quickly return the car to service. In practice, the very fact that the engine does not start well with a working starter (both "cold" and "hot") is already a reason for in-depth diagnostics of the internal combustion engine.

Moreover, it is necessary to find out the cause of the malfunction as soon as possible in order to avoid possible serious consequences and expensive repairs of the power unit and / or elements.

• First of all, you need to start checking with. Diagnostics of all elements is performed step by step. If the car is carbureted, you need to make sure that the carburetor is working, then the fuel lines, the gas pump, etc. are inspected.

In the case of the injector Special attention is given to injection nozzles and. For example, if after turning the ignition key you cannot hear the characteristic sound of the electric fuel pump, which raises the pressure in the system, then the pressure in the fuel rail is first measured, and the pump itself must be removed and checked.

In this case, do not forget about both a possible breakdown in the ramp and the pump itself. You should also remember about a break in the power supply circuits or blown fuses for the gasoline pump.

• Fuel filters can also cause a difficult engine start, especially taking into account the quality of fuel at domestic gas stations. One way or another, the presence of foreign impurities in gasoline or diesel fuel quickly clogs the filter element, as a result of which even a serviceable gas pump is not able to pump the required amount of fuel to start the engine.

As a rule, it is sufficient to replace the fuel filter, and also in some cases with a new element.

• If everything is in order with the fuel supply, then it is checked. On many cars, it is not possible to confine oneself to replacing the spark plugs and, since diagnostics of the ignition coil and distributor are required.

Also, it is not necessary to immediately change the candles themselves, since the existing ones can simply be flooded. First, you need to unscrew and inspect the candles, as well as check for a spark.

Why does it flood spark plugs on injection and carburetor engines: the main causes of wet plugs. How to dry candles and start the engine, tips.

Often, car owners are faced with the fact that when ignited, the starter only clicks, but does not turn, and, as a result, the car does not start. But it happens that the starter turns regularly, which is audible by the characteristic sound, but the car still does not start. What to do in a similar situation?

Reasons why the car will not start

Any modern car in essence, it is a kind of symbiosis of numerous units, systems and mechanisms, due to which not only its characteristics improve, but also there are more chances to face a situation where the car simply does not start. The localization of such problems can be different and, as a result, the reasons are different. Among these are:

• Lack of gasoline, oil and other automotive fluids;
• Discharge of the battery and / or the formation of rust (oxide) on its marks, which interfere with the transfer of charge;
• Problems with candles, injector (carburetor);
• Malfunctions in the electronics system;
• Problems in the operation of the fuel pump;
• Clogged fuel and / or air filters;
• Clogging throttle.

INTERESTING! Some car companies are committed to complete Maintenance for a specified period of time. So, in the event of any breakdown, the owner just needs to call the warranty service center and the specialists will immediately come to carry out the repair.

The starter motor cranks, but the engine will not start. How do you find the reason?

The reason for situations in which the engine turns, but does not start, there may be several factors, however, in the event of such problems, first of all, it is necessary to pay attention to the correct operation of the ignition system and the power supply system, that is, the fuel supply.

IMPORTANT! It is advisable to carry out diagnostics of these systems only in those cases when the operation of the starter proceeds without jerks and unnecessary sounds. In this case, the problem usually lies in the starter itself.

Diagnostics of the ignition system

First of all, you need to unscrew the candle and check for spark. To do this, a high-voltage wire is put on the switched off candle, and the metal part of the engine is touched with its skirt. If a spark appears when the engine rotates, then the spark plug is in good order and does not require replacement - that is, the problem lies elsewhere.

INTERESTING! Depending on the type of engine, the absence of a spark indicates problems of various locations. So, problems in an injection car indicate a malfunction of the ignition module, in a carburetor car - a malfunction of the ignition coil.

The ignition module, due to the design and performance features, is almost impossible to check independently, which cannot be said about the coil.

To diagnose the ignition coil, you need to remove the central wire of the distributor cover and bring it to a distance of about 5 mm to the metal part of the engine, excluding any contact. If there is no spark after cranking the engine with the starter, the coil is out of order.

If the coil is OK, a final check of the ignition system must be performed - remove the distributor cover and check it for defects and damage. If the diagnostics of the ignition system did not give the expected result, and the starter still works, but the car does not start, you need to proceed to the next stage - diagnostics fuel system.

NOTE! In most cases, problems of this nature lie precisely in the ignition system, therefore, all stages of the diagnosis should be carried out as carefully as possible.

Fuel system diagnostics

Checking this unit should be performed sequentially, starting from the fuel pump and ending with the injector (carburetor).

In vehicles with an injector when the ignition is switched on, the sound of the electric fuel pump operating in the passenger compartment should be heard. If this sound is absent, the reason is in the pump motor - either it burned out or does not receive voltage. Therefore, first of all, you need to check the pump itself and its safety system.

Cars with a carburetor are more difficult to diagnose, since the pump is driven by a camshaft. In view of this, to check, you will need to disconnect the end of the hose from the inlet fitting. So, if after that you swing the pump priming lever several times, then fuel should flow from the fitting or hose.

When the starter turns, but the car does not start, the problem may also lie in the injector ramp, or rather, in the presence of gasoline in it. To check, it is enough to press on the valve of the union connecting the pump - gasoline should come from it.

An obligatory part of the diagnosis is checking the fuel filter for blockages. This is not surprising, because situations often arise when, due to lack of fuel, the car does not start, the starter turns, the relay clicks.

Also follows check throttle, which, if clogged, can cause idle move starter.

What to do when the engine won't start but the starter clicks

Often, car owners are faced with a problem such as "drowned out the car and will not start, although the starter turns." The implementation of the measures and recommendations indicated above, in the majority of cases, can solve the existing problems. However, sometimes the relay may be faulty. To eliminate and eliminate problems of this kind, you should also diagnose the relay, after which you may have to repair or replace it.

Starter relay diagnostics

"The car will not start, the starter is spinning"- the cause of such problems can often be identified and eliminated on their own at an early stage, but for this you need to responsibly and thoroughly diagnose the starter relay.

To check the condition of the retraction relay, first of all, it must be carefully removed from under the hood. After that, the starter must be cleaned of dust, dirt, mechanical debris. Oxidized contacts are treated with fine sandpaper.

The next step is to place the starter in close proximity to the battery and prepare two wires of the required length. It is advisable to use wires with crocodiles. Then, with one electric drive, you need to connect the positive terminal of the battery with a similar output on the solenoid relay. After that, do the same with the second wire, connecting the minus contacts. If, when connecting the wire to the relay, a characteristic click of the charge sounds, then it is serviceable and can be installed back. Otherwise, it should be repaired or replaced.

Relay repair or replacement

Repair and replacement is a fairly straightforward process:

Summing up, we can conclude that situations when it did not start car and starter twists, although they cause some inconvenience, but, often, are not critical, since they can almost always be independently resolved.

But do not forget that it is better to prevent the situation than to courageously solve problems, therefore the first rule of the car owner is to regularly check the correct operation of all systems and mechanisms of personal transport.

Often there is a situation when you turn the key, the starter turns the crankshaft confidently, but the car cannot be started. Some run the engine until the battery runs out, hoping in vain that they might grab it. In fact, after two or three unsuccessful attempts, you should start troubleshooting.

1 The engine does not start when the starter is running - possible damage

When the starter turns, and the engine does not start, it is difficult to find the cause right away. It is required to search for faults in quite a few places. Let's start with the starter. Turn the key again and listen to the sounds it makes. It should give off the characteristic smooth hum of an electric motor without interruptions and nothing else. If you hear clicks, hum and extraneous sounds, we are looking for a problem in the starter. In good condition, the engine most often does not start, because no fuel comes in or it does not ignite.

If the fuel is supplied, the ignition is in order, the starter turns, but the engine does not start, we look for the cause in the electrical equipment: we check individual sections of the electrical circuit and its elements. The reasons can be as simple as possible: a fuse has blown, there is no contact due to breakage or oxidation. Rarely, but there are breakdowns of the electronic control unit. Sensors may break, which send erroneous signals to the ECU, and the ECU incorrectly adjusts the ratio of fuel and air, its supply to the engine.

It is possible that the engine shakes violently during cranking, it seems to start, but does not grab. The reason may be electromagnetic interference, which prevents the sensors from correctly processing the data and sending a signal to the ECU. The induction can be created by the electromagnetic field of the starter. If the crankshaft position sensor (CKP) malfunctions are present, the engine will fail to start. In this case, the fuel is supplied normally, the crankshaft scrolls well with the starter.

Starting faults, when the starter confidently turns the crankshaft, are quite common and do not depend on the type of engine.

2 Diesel - the specifics of troubleshooting

Ignition of fuel in gasoline and diesel engine are fundamentally different. The compression stroke in a diesel engine occurs without fuel, it is injected at the very end of it when the temperature in the cylinder reaches 700 °. Fuel ignites on contact with hot air. Excess heat from the head is removed by the cooling system. To maintain the temperature inside the combustion chamber, the temperature required to ignite the fuel, the cold engine is heated by glow plugs before starting.

If a cold diesel engine does not start, we start the search for the problem with the spark plugs. The starter can turn for a very long time, but with faulty spark plugs even at + 5 ° it is difficult to start the engine, not to mention the frost. First, we check the health of the control unit. We connect the light bulb to the candle bus and the mass, turn the key. If the unit is working properly, the lamp will light up. Then we turn the key to its original position, turn off the power bus and check the glow plugs. We connect one contact of the 21 W bulb to the candle, the other to the plus of the battery. If the candle is in good working order, the light is on brightly.

The diesel engine will not start in any weather if the fuel pump is blown or the shutdown valve is faulty. We check with a light to see if the valve is powered. If it is, remove and put on the wire leading to it. A working muffler valve makes clicks. If the valve is in order, air remains in the fuel system. We unscrew the return line of the nozzles or the plug through which we will bleed the air. If there is a manual pumping of the fuel pump, we apply voltage to the valve to open it, and pump the diesel fuel until it flows instead of air. If the pump low pressure with an electric drive, turn it on.

In case of failure, when it is not possible to pump diesel fuel, we check the fuel filter: it may have been walled up by dirt or paraffin.

3 Gasoline engine - check the fuel supply

The engine does not start in the event of defects in the fuel system: gasoline does not flow, it is faulty starting device... To check the fuel system carburetor engine we carry out the following operations:

1. We sharply open the carburetor throttle valves, observing the gasoline injection (the air filter cover has been removed in advance). If fuel is atomized, it is fed to the carburetor.
2. If fuel is supplied, but start cold engine impossible, we check the starting device. We close the air damper - it should completely cover the primary chamber, and the throttle damper should open slightly by 0.8 mm. You will need to remove the carburetor to test the throttle valve.
3. When gasoline is not supplied by the accelerator pump, it is not in the carburetor. We pump it in manually, start the engine.
4. We check the operation of the fuel pump: remove the hose from the outlet fitting and swing it. After a few strokes, gasoline should spray.
5. If it was not possible to pump up the gasoline, we check the fuel filter, the mesh in the carburetor sump. We change the dirty filter, rinse the mesh.
6. Still not supplying fuel? We disassemble the fuel pump and check the diaphragms. If they are broken, the gasoline does not go into the carburetor, but into the sump, diluting the oil.

The oil must be changed, no flushing is needed. We change the diaphragms, pump up gasoline and start the engine.

On vehicles with an injector, the engine will not start if the electric fuel pump is not running. Its serviceability is determined by buzzing after turning on the ignition. Sometimes the reason is oxidized terminals or a fuse, but it happens that the pump burns out. Also may be absent or present insufficient pressure in the ramp if gasoline got there. On the opposite side from the gas line connected to it, there is a valve under the cap. We press it - gasoline should spray from there. If this does not happen, we check the fuel filter, intake mesh, fuel pump pressure reducing valve (located in the gas tank).

4 Ignition - how to find and fix a breakdown

If the malfunctions with the fuel supply have been eliminated, and the car does not start, we begin to check the ignition. We unscrew the candles and check the formation of a spark. We put the wire from the distributor cover on the candle, touch the metal on the car with the skirt, and at this time the assistant turns the engine with a starter. A good spark plug will show a strong blue spark. For injection engine the absence of a spark indicates a malfunction of the module, for the carburetor - the coil.

The injector module cannot be checked at home, but the coil can be checked. Older models have one cylindrical coil, modern ones have a double or monolithic module. The most advanced short circuits, which are installed on each cylinder directly on the spark plugs without wires. The wire coils are checked simply: we take out the central wire from the distributor, bring it to the metal of the car at a distance of 5 mm and turn on the starter. The presence of a spark indicates serviceability.

Often the distributor fails in the car - the burning of the contacts of the breaker-distributor does not allow the engine to start. If the distributor is non-contact, the Hall sensor may have broken. Is not characteristic malfunction- sensors rarely fail. Among the most common distributor malfunctions:

• resistance burned out on the runner;
• the distributor cover burnt out;
• Hall sensor wires are broken;
• runout of the distributor shaft through worn bearings.

We check the distributor cover by replacing: the car is experienced drivers always stocked with a spare. Non-contact ignition with a distributor has a switch that is responsible for stable sparking. A defective switch can prevent the engine from starting. We detect the malfunction by hand - the broken switch gets very hot.

In cars with electronic system most often various sensors fail. The malfunction is fixed, and an error message appears on the dashboard, each of which is assigned a code. Ignition failures are often due to wiring when power is not being supplied. In some ECU malfunctions, the engine cannot be started. We repair the unit in a car service or replace it with a serviceable one.