Possible reasons why the car won't start

The car won't start: reasons why the engine won't start

If you are at least a little familiar with the structure of a car, you can imagine the number of elements that affect the reliable start and good operation of the engine. Accordingly, if the car does not start, the reasons for this are sometimes difficult to find even for experienced car enthusiasts.

Let's talk not only about such trivial things as a dead battery, but also less frequent breakdowns that affect the starting of the internal combustion engine. We will separately consider gasoline (carburetor, injection) and diesel engines.

EMF

The electromotive force that powers the starter, in our case, is the battery. An insufficient level of charging, characterized by a drop in voltage at the output terminals, will not allow the starter to develop sufficient force to start the engine. There may be several reasons connecting the battery and the engine not starting:

• oxidation of contacts. You can clean oxides using sandpaper. It is also worth checking all the important connections of the circuit: ground going to the engine, starter contacts;
• self-discharge The battery may discharge due to increased current leakage. If the leak is small, it can only affect startup during periods of severe frost. Be sure to check the current leakage on your car before winter;
• natural wear and tear, as a result of which the battery can no longer provide good starting current. You should check the electrolyte capacity, as well as the voltage in each battery compartment.

How to understand that the car does not start because of the battery:

• the starter only makes clicking noises or does not respond at all to turning the key;
• The starter slowly turns the engine. If the engine does not start immediately, stop trying;
• After turning the key, the lights on the instrument panel do not light up. You can turn on the headlights. If they shine very dimly, the battery is guaranteed to be dead.

Starter power

If turning the key does not cause any reaction, the problem may be hidden in the starting device itself. This could be brush wear, oxidation or broken contacts, a short circuit, excessive wear on the bushings, or a malfunction of the solenoid relay.

If, after turning the key, no power comes to the starter, the problem may be in the ignition cylinder itself or in the contact group. It is a rare case when the power is cut off by the standard immobilizer or alarm system. Some cars may have a secret algorithm for disabling the immobilizer. Otherwise, you'd better contact an electrician.

Supply system

To find the answer to the question of why the car won’t start, let’s start with the fuel supply system. Malfunctions that are typical for both injection and carburetor cars:

• blown fuses (for example, fuel pump);
• banal lack of gasoline. If, by coincidence, the gasoline level sensor is lying, and the warning light for the critical amount of fuel in the tank is faulty, the car will not move. Please note that the gasoline could simply be drained overnight;
• clogged mesh in the fuel tank, which prevents debris from entering the fuel line, clogged fine filter;
• fuel pump malfunction. On injection engines, it turns on when the key is turned to the 3rd position (On), and you can hear a characteristic buzzing sound;
• clogging of the filter element, which creates a barrier to the flow of fuel.

The best way to check if fuel is flowing is to remove the fuel line hose.

Carburetor internal combustion engines

Of course, the engine may not start due to a malfunction of individual carburetor elements (contamination of jets, channels) or incorrect adjustment. If fuel does not flow, it is necessary to defect the fuel pump parts.

If you understand that fuel is being supplied to the intake manifold, but there is no ignition of the fuel-air mixture, you should “dig” in the following direction:

• Unscrew the spark plugs and evaluate the carbon deposits. If you are unable to start the engine right away, you may have already “flooded” the spark plugs. Now it is advisable to unscrew and dry them in any case;
• disconnect the main armor wire, bringing it closer to the metal part. Try turning the motor. You will immediately notice a spark if it comes to the ignition distributor. You should also check the armored wires for “breakdown”;
• If there is no spark on the main wire, carefully inspect the wires for breaks. If the circuit connections are in good condition, you should proceed to checking the coil. It is she who generates the spark;
• ignition distributor and its cover. Check the size of the gap, the cleanliness of the contacts, and the presence of play. Of course, if the ignition is not set correctly, the car will not start.

Injection internal combustion engines

An injection car can have several types of injection systems:

• single injection;
• distribution injection;
• direct injection.

In the first two cases, the first thing you should check is whether fuel is flowing to the injection system. It is also necessary to diagnose the fuel regulator.

If the car starts but does not start immediately, it is worth checking the fuel line for pressure loss. If during idle time the fuel has managed to drain into the tank, then to start you will have to turn the starter for a long time.

In the case of mono-injection and distributor injection, clogged or “flowing” injectors rarely become an obstacle to starting.

Direct injection is difficult to diagnose with your own hands, as it has fully electronic control and a complex design of fuel injection mechanisms. If you do not know what to do if the car does not start, or do not have the appropriate diagnostic equipment, it is best to contact a specialized service center.

If you suspect there is a spark problem, check:

• spark plug;
• armored wires;
• common or individual ignition coils for each cylinder (depending on the design).

Spark and electronics

Often the engine control system is to blame for a stalled engine. If we talk about sensor equipment, then you are guaranteed not to start the car if there is a breakdown of the crankshaft position sensor (hereinafter referred to as CPPS). Even if the mass air flow sensor is not working correctly, the car will start, even if not immediately.

In cold weather, poor starting may be caused by freezing of condensate in the throttle valve. It is also worth paying attention to the cleanliness of the IAC and throttle valve.

Rarely, the cause of immobilization of the iron “heart” is the failure of the electronic engine control unit (ECU). The reasons for its malfunction may vary from person to person.

For example, owners of Lada Kalina know that if a leak forms in the heater radiator, coolant floods the computer. Contact oxidation or failure due to moisture can occur if the ECU is installed behind the engine shield.

Especially if you don't pay much attention to drainage channels.

Diesel internal combustion engine

The algorithm for determining why a diesel car does not start depends on the type of injection installed. Let us conditionally divide the systems into two types:

• completely mechanical systems, in which the electronics include power supply to the high-pressure fuel pump solenoid valve;
• with electrical control. Accordingly, in this case, not only mechanical failures, but also the electronic control system may be to blame.

Reasons why a car with a diesel engine does not start:

• lack of compression, which, due to the design features, is very important for starting in cold weather;
• malfunction of the glow plugs, which the battery “feeds” to heat the combustion chambers after turning the key to the On position. If not all spark plugs are working, the engine will start, but not immediately. The problem will progress with the onset of frost;
• incorrect ignition timing adjustment;
• malfunction of injectors, fuel injection pump;
• If an electric low-pressure pump is installed in the tank, its malfunction will lead to difficult starting in the morning. Due to the drop in fuel pressure, it is difficult for the engine to start immediately. Air leaks also lead to similar consequences.

You can study this issue in more detail by reading the article about the reasons for poor diesel starting.

Your actions

So what to do if the car won’t start, but you need to drive? Let's assume that the cause of your troubles is a dead battery, or that you caused it yourself while trying to start the car with the key.

You can ask other car owners for help. You just need to know how to “light a cigarette” correctly.

It is advisable to have current clamps in the car, since it is not a fact that everyone who agrees to help you will have one with them.

If your battery is the most alive, try starting the car with a pushrod. Ask someone to tow your car, or take advantage of gravity by placing the car on a slope. Be sure to familiarize yourself with how to properly push start a car.

Source: http://AutoLirika.ru/remont/ne-zavoditsya-mashina-prichiny.html

Don't panic! What to do if the car doesn't start?

Even new cars can break down, let alone old vehicles that have traveled quite a bit on the roads of our country. If the car won't start, the first reaction for most people is panic, which certainly won't help matters.

In addition, some continue to turn the ignition key again and again, hoping that this time the car will definitely start and the problem can be forgotten like a bad dream. However, you definitely can’t help the car in this way; on the contrary, after a couple of minutes the battery charge will be exhausted and the situation will only get worse.

To get out of the situation with minimal losses, calm down, try to check a few basic signs, identifying the causes of the problems that have arisen - perhaps you can start moving within a few minutes.

The main thing is to pull yourself together and find the cause of the car malfunction without unnecessary emotions.

First of all, look at the instrument readings, paying special attention to the fuel level indicator - maybe you simply did not pay attention to the very low level of fuel in the car tank.

True, in this case you need to be sure of the accuracy of the sensor readings - remember if it has failed recently.

If a similar problem happens to you, just go to the nearest gas station with a canister or large bottle and fill up with at least 2 liters of fuel.

There is another way to help your car if it won't start - it will allow you to drive a few kilometers. Fill a strong plastic bag with some water and tie it several times to prevent the liquid from leaking out - weave a thin, strong rope into the knot.

Slowly and deliberately push the bag through the filler neck without releasing the rope.

As soon as the bag sinks to the bottom, the fuel level will rise slightly and it will be easier for the gas pump to pump it - after arriving at the gas station, immediately pull out the bag, still carefully removing it through the filler neck of the car.

Video about what to do if the car won't start:

To find out why your car won't start, take another look at the dashboard. If the lights are very dim and go out immediately when you turn the key, the problem is a lack of battery charge. You will have to find a way to charge it in order for the car to regain mobility. This can be done using the following methods:

• Using a jump charger with a built-in battery;
• Using a 12V home converter that connects to the household network;
• Take the battery to the nearest service station or garage cooperative;
• Ask a neighbor, friend, or other family member for a light. To do this, your car will need special wires with clamps;
• Call a taxi, indicating in advance that the car is needed for “lighting up”. Typically, drivers will charge you for a 3-5 km fare.

If the problem arose out of the blue, first carefully inspect the electrical system of the machine - it is quite possible that the cause was some wire that fell off its terminal and created a short circuit with an increased level of load on the battery.

If you want to know what to do if your vehicle won't start due to battery failure and you need to drive urgently, you may be advised to use the old-fashioned method of jump starting. If the machine is parked on uneven terrain or facing an incline, you will need the help of 1-2 people.

They will have to push the car, following it from behind.

Get behind the wheel, engage second gear and keep the clutch pedal pressed - as soon as the car reaches a speed of 20 km/h, release it - naturally, this method will not work on cars with automatic transmission, as well as towing, which uses a similar algorithm.

When you have to push the car yourself, rest your hands on the windshield pillar, remembering to steer if necessary - as soon as you reach the desired speed, jump inside and engage second gear - after that, you need to let the car run at moderate speeds for 5-10 minutes to accumulate the required battery level.

When the reason is much more complex

The starter does not turn or moves very sluggishly

If your car does not start and you do not hear the sound of the starter at all or it is much changed compared to normal, you will again have to pay attention to the electrical system.

First of all, take a look at the battery - the terminals installed on it can be very oxidized, as a result of which the starter will not receive enough current to start the car.

The solution will be quite simple - you need to take a sharp knife or a piece of sandpaper and clean the terminals until you see a characteristic metallic sheen. Also, when the car does not start, check how tightly the bolts that are used to secure the terminals are tightened.

Is the battery OK? Then close attention should be paid to the starter, which very often becomes the reason that the car does not start.

In ninety percent of cases, the cause of the problem should be looked for in the wiring and relay - check if you can hear clicks when turning the key, one of which will be barely audible, and the second very distinct.

If no sound is heard, it is worth replacing the failed relays - the absence of a loud click indicates a malfunction of the retractor inside the starter housing itself.

When the car does not start, also remove the wire coming from the ignition switch from the starter and check with a multimeter for the presence of voltage in it when you turn the key.

If it is not there, just take a small piece of wire and connect the solenoid relay terminal directly to the battery with the machine's electrical circuit closed.

If, when you turn on the starter, the wires begin to get very hot, or it has not been working correctly for quite some time, the problem is more serious and you will have to entrust the repair to car service specialists.

Ignition system

The starter turns, but the car still won't start with the key? The next step is to check the ignition system - first of all, open the hood of the car and take a look at components such as the ignition coil, spark plugs, switch and distributor (in a carburetor car). If there is excess moisture on them, remove it with a cloth and wait 5-10 minutes until the residue evaporates on its own.

Also check the condition of the protective casing of the ignition coil and high-voltage wires - in most circumstances, their damage makes it impossible to further operate the machine.

Unscrew the spark plug, connect it to a high-voltage wire and check for the presence of a spark when turning the key in the lock - if there is none, remove the wire coming from the coil or switch, place it on a metal surface and turn the key again. If there is no spark again, you will have to change these parts, which will cost a considerable amount.

If there is no spark on the spark plug, check it carefully - if there is heavy carbon deposits, the device must be thoroughly cleaned and calcined for 10 minutes on a gas stove. When you have filled the car's spark plugs with fuel, you just need to dry them and install them back.

Fuel supply

If a car starts and immediately stalls, in most cases the culprit is the fuel system or control electronics. In the case of the second, without a special scanner you will simply be powerless, so you should focus on the first option.

Listen carefully to see if the fuel pump is running when you turn the car's ignition key. If the car has very good sound insulation, remove the incoming hose from the fuel filter and turn the key again for 2-3 seconds - the result should be a powerful jet of fuel.

If there is one, install the filter in place, remove the hose from its outlet and repeat the procedure - if there is no stream, you need to blow out or change this part of the car.

To find out why a car equipped with a carburetor engine does not start, it is enough to remove the air filter and check whether all moving parts move easily - otherwise you will have to use special products to clean them and restore them to functionality.

On vehicles with a fuel injection system, faults will appear as an illuminated "Check Engine" light on the dashboard.

If gasoline passes through the fuel filter normally and a malfunction is observed at further stages, you should contact a specialist, since solving such a problem on your own will be very difficult.

If a car equipped with a diesel engine starts up and immediately stalls, it is better not to try to interfere with such a complex design and immediately take the car to a service station. The only thing you can check is the performance of the glow plugs.

Their malfunction in cold weather can cause the car to not start.

In addition, fill the tank with some fuel - if it is thick enough and does not spread, you have filled it with fuel that is not suitable for your climate and you will need a special additive.

How to deal with the problem?

The main advice I would like to give to car enthusiasts is to use the above recommendations only if you need a car urgently and you can’t wait.

Under other circumstances, do not disassemble the car yourself and do not rush to buy new spare parts.

It would be best if your car is inspected by a specialist who will form an expert opinion and tell you how to start the vehicle.

Source: http://365cars.ru/soveti/ne-zavoditsya-mashina.html

The car won't start: causes of car malfunctions

Probably every car enthusiast is familiar with the situation of powerless disappointment in a situation where it is impossible to start the car.

Technical problems can occur absolutely anywhere: on the highway, on a country road, before leaving the garage, after the need to resume driving after a short stop, and even at a railway crossing. As we can see, sudden failures can be very dangerous.

The car won't start, what should I do?

Before describing the main reasons for the inability to start the car, I would like to note the procedure for action when the vehicle fails at the most crucial moment - on the road.

At the same time, the driver is not only deprived of the opportunity to choose an alternative transportation option, but may also unwittingly become a provocateur of an emergency situation.

If the car stalls and will not start, you must activate the hazard lights and immediately tow the car to the side of the road.

This will make it possible to clear the highway of the created obstacles without putting the lives of the driver and owners of other passing or oncoming vehicles at risk. To avoid rolling down a hill or slope, you must set the parking brake. Then you need to get and install a warning triangle, which should be located at a distance of 15 meters from the car.

When a car does not start, the reasons can be very trivial. Perhaps the car enthusiast simply did not keep track of the gasoline level, and the fuel in the tank came to an end. An inexperienced driver should first check this option. You need to turn on the ignition and look at the instrument console. Pay attention to the fuel level indicator in the car.

If gasoline is at zero, the level indicator will light red. The indicator may appear as a red watering can. This signal indicates a violation in the oil supply system. In this case, you should not try to continue driving, and the best solution would be to direct the car directly to a service station.

Also pay attention to whether the check engine light comes on or not, this will allow you to narrow down your search for reasons.

A faulty vehicle electrical system is a common cause of engine failure.

If there are no problems with the fuel and oil supply system, it is worth assessing the power supply system. One of the wires may be damaged. This also applies to situations where the car has difficulty starting. That is, it starts with varying success not on the first try.

It is necessary to lift the hood lid and evaluate the integrity of the electrical system wiring and the quality of all contacts. Experts recommend moving all connectors. The contacts may become clogged with oil and dirt and may not transfer charge. In this case, they must be wiped with a dry cloth.

When carbon deposits form, which often happens over time, the scale must be carefully cleaned off. Gasoline may be leaking under the hood. Do not start the engine until the leak has been repaired and the leak area has been dried.

In addition, leaking spark plugs can also cause your car to be unable to start. It is necessary to examine each candle, they must be dry. Oxidized or faulty car battery terminals are a common cause of unstable engine activation.

It is necessary to check the quality of the connection of each terminal, and remove scale, if any, with sandpaper. The terminals must always provide high-quality contact for a stable power supply of the required power.

Why won't the car start on fuel injection vehicles? Perhaps the problem lies in fuses that have blown and are unable to activate the engine. A malfunction of the air filter is also possible. Over time, it may simply become clogged. It is necessary to remove the air filter element, this will make it possible to get to the garage or car service center.

A sudden stop with the inability to start the car again may be associated with a critically low level of coolant or oil in the engine. It is worth noting that the car does not start well for those motorists who forget to properly maintain their personal vehicle.

Irregular technical inspection, leaving the availability and quality of engine fluids in car systems to chance can lead to premature wear of all important components of the car and its unstable operation. Weather and climatic conditions can bring additional risks: abnormal heat and extreme frosts.

All this is negatively reflected in the operation of the engine, which becomes more and more difficult to start. In this case, failure of the motor to operate can lead to overheating.

Engine overheating - causes

Overheating of the engine not only causes inconvenience when moving the car, but also poses a great threat to a number of elements of the “heart of the car.” Experts say that even short-term overheating can affect the stability of the car in the future. What are the main reasons for such an unpleasant phenomenon?

• a banal small amount of coolant in the system;
• low efficiency of air cooling of the radiator, which is caused by weakening the tension of the crankshaft belt, which activates the fan;
• incorrect operation of the thermostat, which also happens over time and is expressed in the inability of the device to respond to the operating temperature of the antifreeze that comes out of the engine;
• incorrect adjustment of the ignition or injection system;
• if the gasoline engine runs for a long time under conditions of detonation;
• prolonged operation of the engine in off-design modes;
• the appearance of a crack in the exhaust valve, which contributes to its burnout;
• accumulation of large amounts of deposits in cooling cavities. Mineral salts that settle from water and antifreeze. They have the ability to be deposited and grow on the walls of the chamber. Such growths have poor thermal conductivity, significantly reducing the impact of the cooling system on the engine. In addition, the growths physically block the cross-sections of the channels and reduce water flow. As a result, not only internal, but also external overheating is more than possible. Don't forget to flush the engine cooling system;
• The combustion chamber is also susceptible to deposits. The extra layer of carbon deposits does not conduct heat flow, which causes internal hypothermia;
• a number of inappropriately selected additives can also harm the engine by forming a heat-insulating metal-ceramic layer.

When planning a trip at the very beginning, a situation may arise when the car starts and stalls. This may happen after releasing the engine speed control pedal.

It is necessary to open the throttle valve slightly and tighten its drive cable. If the timing belt is broken for any reason, the engine will not start.

You should also monitor the cleanliness of the throttle valve; you can find out how to clean the throttle valve on our website.

If you drive carelessly through a deep puddle at low speeds, moisture can get directly onto the ignition wires, followed by a power failure. It is necessary to identify this possible cause and wipe the wires dry with a rag.

A typical engine failure situation is when the carburetor float chamber fills during a long climb. You can find out if there is such a problem after lifting the hood. At the same time, you can smell a strong smell of gasoline.

The most typical causes of problems with starting a car are related specifically to the power supply and the quality of the cooling system. However, if the car does not start, the starter turns, and everything is in order with the battery and electrical system, there are other reasons for the problem.

Thus, incorrect operation of the fuel pump can cause engine failure. It is worth remembering that the car has a working reserve of fuel. In other words, the car will not move until the tank has the minimum allowable supply of gasoline in the system.

A malfunction such as a clogged fuel filter can also affect the fuel supply and the quality of the car's starting.

Regular preventive inspections from a reliable service center will not only minimize the risk of the car being unable to start in any weather conditions, but will also ensure its long-term service.

Video tips - “Do not start the car in winter”

Source: http://autoremka.ru/raznoe/mashina-ne-zavoditsya-prichiny.html

Why the car won't start: looking for reasons

Every driver has probably found himself in a situation where the car won’t start and wondered what to do. Today we will talk about what to do if the car does not start, when this is possible without the help of specialists, and consider the most popular causes and situations of malfunctions.

We are looking for the cause in the battery

Perhaps the most common reason why your car won't start is a dead battery - especially after being parked for a long time. The air temperature drops at night, the car cools down, and so does the battery.

Important! During the cold season, after spending the night outside, the battery charge level may drop by a third.

This is not always due to a breakdown of the battery, it is simply possible that it was not fully charged, and after cooling, the battery charge dropped below a critical level.

In order to slightly increase the battery charge level, turn on the high beams for a few minutes, then the electrolyte in the battery will come into an active state, and, accordingly, the charge level will increase slightly.

It is necessary to monitor the battery charge level to avoid such situations in the future.

Another problem associated with the battery is terminal oxidation. The terminals oxidize gradually, resulting in a loss of voltage. Getting rid of this problem is quite easy - just unscrew and clean the terminals.

Is there fuel supply?

If the car does not start, the fuel system may be the cause. When the car starts and immediately stalls, or does not start at all, then the problem may be in the fuel pump - it may simply burn out.

To check whether the fuel pump has burned out, you need to remove it and connect it directly to the battery.

Also pay attention to the coarse filter mesh, as it becomes clogged over time, and this leads to the following consequences:

1) The gasoline pump does not have enough power to pump the amount of gasoline required for ignition;

2) Possibility of the fuel pump burning out when trying to pump the required amount of gasoline.

The possibility that the fuel hose is broken cannot be ruled out. Drivers often spend a lot of time looking for damage, completely forgetting about the fuel hose, and checking it is very easy - just look under the bottom of the car.

Checking the spark plugs

If your car does not start, and it is not a discharged battery, then it would be useful to check whether the spark plugs are flooded.

The reason for this may be driving at high speed or heavy overload of the car, and it can also happen when the engine suddenly stalls on the road. When too much fuel gets onto the spark plug electrodes, the standard voltage is not enough to produce a spark.

To solve this problem, you need to unscrew the spark plugs and clean them with a dry cloth, or blow out the spark plugs (if it is not possible to do the first option).

To do this, you need to put the car in neutral, press the gas pedal, and turn on the ignition. Consequently, fuel does not enter the combustion chamber, and it is purged with air.

After the spark plugs have been blown out, be sure to pour a little oil into each cylinder (blowing with air removes the oil film from the cylinder walls).

This method is completely safe for your car.

Filter clogged

If your car's engine does not start, the problem may be due to a clogged air filter. It’s very simple to check if this is true - remove the filter from the housing and try to start the engine.

If it starts, then you need a new air filter, and you cannot delay installing a new filter, because when untreated air burns, carbon deposits are formed that harm the engine.

This problem is especially relevant when you frequently travel by car outside the city on dusty roads, then the filter must be changed twice as often.

Checking the fuses

Quite often, an injection engine may not start due to blown fuses. To check whether blown fuses are the cause of the ignition failure, you simply need to replace the old fuses with new ones. It would be a good idea to have a spare set of fuses in your car.

Is the engine overheated?

If you can't start the car, or it suddenly stalls, then the problem may be that the engine has overheated. The reasons for engine overheating are as follows:

• The coolant temperature sensor is faulty.

• Weak compression.

• The water pump is damaged.

• Low coolant level.

It is impossible to determine the malfunction in the first two cases on site. You can check the pump by connecting it directly to the battery, and if it is working, there is probably a problem in the wiring, or the terminals have oxidized.

As for the coolant level: when it is below the required level, the liquid will not cool the engine sufficiently, and when the coolant level is significantly lower than normal, it will simply boil.

This becomes clear from the drips on the covers and plugs of the radiator and expansion tank. Allow the engine to cool and fill with coolant.

It is important to know! If the engine overheats, in any case, wait until it cools down and carefully, without putting any stress on the engine, go to a service station.

Checking the starter

If the car does not start, and you are looking for all sorts of reasons for the malfunction, then it does not hurt to check the starter. This can be done by connecting the starter to the battery directly (if its terminals are accessible) and connecting the appropriate wires.

When the starter rotates normally, then the problem is not in it, but in something else, but when it “does not turn” at all, it’s time to repair or replace the starter. Sometimes the starter rotates, but slowly.

Most likely, in this case, the terminals on the starter or battery have oxidized and need to be cleaned.

Source: https://auto.today/bok/4762-pochemu-ne-zapuskaetsya-dvigatel-vashego-avto-osnovnye-prichiny.html

Why won't the car start?

A car enthusiast is not immune to a situation where the car does not start when turning the ignition key. The car does not want to leave the yard in the morning when the owner is in a hurry to go to work, the car does not intend to continue driving at the intersection, if the green light comes on, the engine failed on a long trip.

Often, starting problems occur after a long period of parking in the garage. Many factors contribute to the sad turn of events. A driver with the necessary information can take preventative measures or fix the problem in a short time.

What leads to problems starting the engine

Has your car stopped starting? There are many circumstances. Sometimes this is preceded by some event: the driver found himself in a deep puddle, the car was involved in an accident, the vehicle was laid up for a month.

In winter, you can see vehicle owners in the yard turning the key unsuccessfully. In the southern regions, there are cars parked along the roadsides whose engines are ready to boil.

Temperature changes and precipitation can easily cause your car to not start.

It also happens that everything was fine yesterday, but today the car doesn’t start well.

It's not just about the natural wear and tear of parts that occurs over time. It is difficult to predict what awaits a car when it is left on the street. Hooligans, animals, and weather conditions can cause irreparable damage to your car.

It is connected not only with the appearance of the body.

Whatever happens, it is important for the owner to eliminate the reasons why the car does not start. It can be repaired independently or with the help of a car mechanic in a specialized center. In some cases, without diagnostics, it is not clear why the engine does not start.

If the car does not start, check the spark plugs and battery charge level

Problems to look for:

1. Discharged battery.
2. Poor condition of spark plugs.
3. Old air filter.
4. Problems with the electronics system.
5. Incorrect starter operation.
6. Engine overheating.

Low battery

If the car does not start after a long period of inactivity in a parking lot or garage, then there is a high probability that the problem lies in a worn-out battery.

The battery that is at greatest risk is one that the owner was too lazy to service in a timely manner. The risk group also includes those drivers who leave the garage several times a month.

Remember the steps that will help you quickly revive your car

A driver who has once experienced difficulties associated with a dying battery quickly identifies the problem in the future.

If the car does not start, you can take some actions to increase the electrolyte charge. Turn the high beams on and off several times, then turn the key. A simple action warms up the battery, setting the ions in motion.

This trick may be enough to allow the engine to start.

Why won't the car start? Often the reason lies in the oxidation of the terminals. Insufficient contact will be where the white coating has formed. It occurs when a drop of electrolyte enters a connection. To fix the problem, carefully clean the terminals and lubricate them with oil so that the situation does not occur again. For more information on what to do if the battery is dead, see this video:

The fasteners are clamped with bolts to ensure the strongest contact at the connection point.

Poor condition of spark plugs

Recently, the engine felt powerful overloads and operated at high speeds, and then stalled, and the car became unruly. The prerequisite for this event is candles filled with fuel.

The engine will not start because there is no fire. It is necessary to remove the spark plugs and rub their electrodes with a rag or dry cloth. Additionally, you will clean them of dirt and carbon deposits that form as a result of using the car.

Wipe spark plugs covered with soot with a rag

Not in every situation where the car may not start, the driver has a set of tools in his arsenal to fix the problem. If you don’t find a key in the trunk to remove the spark plugs, you can dry them in another way.

This flow will be enough to dry the candles. Don't forget that other parts of the engine will become dry. Engine oil is blown out of the cylinders, which will not benefit the car. It is important not to overdo it, blowing only to such a state that the engine starts working.

Old fuel filter

If the car won't start, few people think about the air filter. There are no unnecessary parts in the car, everything is thought out and rationalized.

It is usually made from natural or synthetic fiber, which serves as a protective barrier. Harmful chemical impurities that are used to treat the roadway are absolutely unnecessary inside the car.

If the engine starts when you remove the fuel filter, then it’s time to change the filter.

A dirty fuel filter causes the car to not start. The reason is that accumulated dirt gets into the engine.

If the engine does not listen due to the old filter, then when it is removed the car will start. A new consumable part must be purchased and installed immediately. It is dangerous to use a vehicle without a filter.

All impurities in the air enter the cylinders, settling inside.

Fans of country trips, cross-country walks, and off-road racing face the problem of a dirty filter.

The driver can navigate by mileage. There is no need to skimp on consumables. It will be cheaper to replace the filter than the engine, especially when the car has already become difficult to start.

Problems with the electronics system

Broken fuses are a problem that can be fixed the fastest. If one of the elements of the fuel supply system burns out, the injection engine will not start. This malfunction can be eliminated by installing a new plug.

No special equipment required. In some cases, you can attach a coin or a piece of wire to the place of the blown fuse if you don’t have it with you. It is safe to use paper-based foil, which conducts electricity well.

Often the cause of engine silence is a blown fuse.

Things aren't always that simple. If a car that has been parked in a damp place or has sunk once will not start, a problem with the wiring should be expected.

In the first case, when you insert the ignition key, the icons on the panel do not light up, and when you turn to the next position, the car will not send any signals. In the second case, you should check the smaller wire coming from the starter with a tester. If the device shows no voltage, then the problem is in the wire.

Incorrect starter operation

The starter plays an essential role in starting the engine. Rotating torque transmits power to the crankshaft flywheel.

The car does not start due to natural wear and tear of the starter or faulty electrical wiring from the part.

Check the operation of the starter by applying power to it

You should check the operation of the starter by applying power directly. The battery is disconnected from the terminals and current is supplied through the extension wires to the starter.

If electricity is supplied to the starter, but it does not turn, then due to a faulty part, the car will not start.

It is recommended to replace the starter if it is motionless or its action is not enough to start the engine.

When the starter rotates, the engine will have difficulty starting if the Bendix gears or flywheel ring are ground off. The drive gear cannot engage the driven gear and slipping occurs.

The condition of the teeth determines which of these parts is worn out. It must be replaced. The most budget option is installing a new starter. Bendix is ​​also inexpensive, and you can replace it yourself.

It will cost much more to buy a new flywheel ring.

Engine overheating

Severe overheating of the engine leads to a situation where the car stalls while driving and will no longer start.

Sometimes a car gives surprises without warning the driver in advance. For more information about engine overheating and what to do about it, watch this video:
Malfunctions that cause the engine to boil:

• failure of temperature sensors on the instrument panel;
• damage to the coolant tank and its leakage;
• cracks in the hoses through which antifreeze evaporates;
• failure of the engine cooling system pump.

The engine does not start well due to overheating. The driver can only check the level of antifreeze in the tank and the integrity of the pump with the naked eye. It is connected to the battery directly, as in the case of suspected starter faults.

The coolant must exceed the minimum mark. If this is not the case, it should be topped up immediately. In extreme cases, you can use distilled water. It is filled temporarily with the subsequent replacement of all the liquid in the cooling system. Before topping up, the engine must cool down, otherwise there is a risk of boiling antifreeze splashing and getting on parts adjacent to the tank.

What to do if the driver has problems starting the engine

If the car does not start (there may be different reasons for this), then you will not be able to use the vehicle for its intended purpose, and you can only sell it for pennies.

The person who repairs it must have an understanding of its structure and functioning, and even better, a technical education.

Serious engine starting problems will not go away on their own. They occur when parts are worn out, wiring is in poor condition, and gears have nothing to grip onto. Other types of troubles can be eliminated without repair.

For example, the engine will not start if the fuel tank is empty. Even a novice driver can overcome this trouble. By the way, gasoline diluted with water also prevents the engine from starting and normal operation.

Another problem that can be easily resolved is related to nutrition.

There are many reasons why a car may not start. There is a separate approach to troubleshoot each problem. Most often we are talking about replacing parts. First you need to understand what exactly is not working. When you don't know what to do if your car won't start, it's best not to fix it yourself. There are many car services where they will carry out the work quickly and fix the problem.

Source: http://www.em-grand.ru/post-mashina-ne-zavoditsya.html