❄The car won't start in cold weather? 😉Do not read nonsense on the Internet

⏰ Reading time: 5 min.

Hello Friends

Why won't the car start in cold weather? Yes, everything is much simpler than it seems at first glance.

The first step is to learn how to filter information. Better yet, learn how to filter the sites from which you take this very information.

Websites are divided into two types:

📌Websites for people

📌Websites for search engines

The saddest thing is that there are practically no sites for people left. There are only a few of them in each topic. And in some subjects, they are generally absent.

All other sites are crammed with copy-paste, which carries absolutely nothing of value. Nothing useful specifically for people.

The main task of such sites is to fill a certain number of characters of a unique text, buy links ... and you are in the top!

Despite all the proud statements by Yandex and Google that the search results are getting better every year, in fact, everything looks the other way around. Previously, the site of an ordinary "Uncle Vasya" could get to the top, who had been repairing internal combustion engines all his adult life and had already accumulated a huge baggage of experience. And now only those who have money to buy articles and links are in the top.

And this is the bitter truth, friends.

👀Therefore, do not take at face value the advice that you consume on the Internet every day.

Personally, I take it with humor🙂

✅Here is a screenshot of the site, which is in the FIRST❗ place in the search results for the query « the car will not start in frost »

the car will not start in frost

How can such heresy be ranked in general? Not to mention # 1? 😪

By the way, this is a pretty good request, which is requested more than 60,000 times a month. Can you imagine how many people read about:

✔ fuel tends to turn into ice in the cold

✔ weakened battery signal

✔ sparks when the wire is supplied are dim, which means that the reason lies precisely in the breakdown of the candles

✔ the spark cannot break into the camera

✔ resulting in complete engine breakdown

✔ corrosion of the control unit in frost

✔ the car is frozen

Krylov's fables and Tolstoy's works rest in comparison with these masterpieces. It is immediately clear that this work was written by a copywriter girl, trying to scribble at least a unique text about what she herself had just read on the Internet

⛔Therefore, do not waste time searching for information on the Internet. You will not find anything useful. Therefore, there are only two ways left:

📌Go to the library and find a book of your choice. Because the book has an author! And the author is reputation and trust.

📌Search for sites that also have an author, and not a set of texts from someone unknown.

Thanks to this, you will quickly learn to separate copy-paste nonsense from reality.

And about the realities further.

🔔Why does the car not start in frost

Can you list a couple of dozen reasons? Will they help you? Will you go and implement them all without hesitation?

Of course not, because winter is over faster than you can double-check it all.

So what's the point of that?

📢I won't get tired of repeating - there is no magic pill. There is only a magic tool called Diagnostics!

Without it, it is impossible to quickly determine the cause of poor engine starting.

✅A simple diagnostic adapter for 10 usd will help you in one minute to determine the operability of all sensors of the engine management system , except DPRV (camshaft position sensor)

K-Line adapter

⚠But even if you do not want to buy an adapter and delve into diagnostics (I understand that not everyone likes this), then at least do not listen to the advice of gifted bloggers and do not rush to immediately change DTOZH, IAC, DPKV ...

🚩You will be advised not for tens of thousands of hryvnias, rubles or whatever currency you have ...

I agree that both the temperature sensor and the idle speed sensor and the crankshaft position sensor can affect the confidence and duration of the start.

But if you drove into the garage yesterday and the engine started perfectly, the temperature on the panel was normal, the tachometer was working, the idle was excellent, then what do these sensors and actuators have to do with it ???

❄Nothing will happen to them from the effects of frost. And the likelihood that they themselves were out of order overnight is very, very small.

Therefore, do not listen to anyone and do not run🏃 waste money on replacing “frozen sensors” and “broken candles”.

🤷What then to do if the car does not start in cold weather?

🚩What do I do in this case if the car is not known to me and I see it for the first time? There is only one point to which you need to pay attention - How does the starter turn? Cheerfully or with difficulty? Or, at all, does not twist?

If the starter does not turn or turns with difficulty:

📌Check and recharge the battery. If it's old, then just change it.

📌We use oil no higher than 5w. If the frosts are very strong (below minus 30 and below), then 0w

📌If the starter does not turn and the indicators on the instrument panel do not dim, then we check the wiring to the starter and the starter itself. Usually, it is enough just to disconnect the wires from the starter, strip

Starter contacts

and treat the terminals with a contact protection agent

Liqui Moly Electronic-Spray

In 90% of cases, the problem is solved.

If the starter turns normally but the engine does not start:

📌Remember when we washed the nozzles without removing them and the valves. Most likely never. Therefore, the first thing we do is flush the valves, the combustion chamber and the nozzles. If HBO is installed, then we rinse immediately and most likely at least two times.

📌 Fill in normal gasoline. Its effect on starting in frost is very great. I am writing this not as a copy-paste, but as an author with experience.

📌Remove the fuel rail and drain all the debris from there. We change filters in nozzles. If the fuel supply system on your car is of a dead-end type, then we do it regularly. And preferably in summer, so as not to read this page in winter.

F16D3 engine injector seal ring

📌Checking the fuel pressure

Fuel pressure in the system without return

These are all the necessary recommendations if the engine does not start or does not start well in frost ... You don't need to invent anything else. After these procedures, it will start.

And if you want to be very brief, then I will give you only two reasons why the engine does not start in cold weather:


📌Fuel supply system


If there were problems with starting even before the frost, then I do not know what the reasons are. And nobody knows. It is necessary to do diagnostics.

🔔 The car will not start in cold weather. Useful videos

Here are some helpful videos on this topic.

Launching a Chevrolet Lacetti in frost

Flushing valves and nozzles

Diagnostic parameters before starting and when starting the engine

Replacement of filters and nozzle seals. How easy it is to check injectors

The article is understandable, with a bit of humor. Don't take it too seriously. Peace for everyone! Winter is a time of the year that tests the experience and basic knowledge of a car enthusiast, which starts with certain subtleties of driving and ends with how to take care of the car in an elementary way. As we know, stupid people learn from the mistakes they themselves make, and smart people learn from the mistakes of others. In the age of the Internet, any information is available to any person; there are no more stupid people among us. There are only lazy people left who do not want to make any unnecessary movements, or stubborn people who, even if they find out something, will still do the opposite.

Naturally, this does not mean that if your "warm car" does not start in the morning or you are carried along the road, then you belong to this category of citizens. After all, there are also random phenomena. Simply, our task now is to reduce the number of these random phenomena, and not to confuse ordinary bad luck with our own stubbornness or laziness. In this case, those who harness or prepare the sleigh for a long time in the summer will be lucky with the car.

1. Prepare your sleigh in the summer. This is the first way to start a car in winter. Late autumn is the time to get your car ready for winter. Pour distilled water into the battery, wipe it, or it will be better if you clean the terminals with sandpaper and screw them tightly. If the battery is not new enough, it is better to replace it.

Change the engine oil so that it is less viscous: synthetics with indicators of 0W or 5W or semi-synthetics. Unscrew and check the spark plugs for carbon deposits and replace them if necessary. Check the pipes that go from the inlet tract to other elements or systems for integrity, and also check the tightness of their joints. Make sure that the alternator strap does not slip. Purchase a Quick Start aerosol. To prevent the glass from freezing, fill the tank with an anti-freeze liquid for glass. In frosty weather, it is especially not needed, but if it freezes, it will damage the channels through which it passes. Place the towing cable and cigarette lighter wires in the trunk.

2. The main culprit of the car not starting is the battery. When there are severe frosts in the yard, it is recommended to take it off at night and carry it indoors. If the driver is a woman, then it will be tiresome for you to carry the battery and connect it every day while it is freezing outside. And if all this tires you, buy yourself a new battery, or find a garage for your car, even if it is not heated. Indoors, the air temperature is slightly higher than outside.

3. Before starting the car, let's "wake up" our battery: turn on the rear window heating, fog lights, turn on the low beam (for 15 or 20 seconds) or high beam (10 seconds) for just a few seconds. Then the electrolyte will warm up a little and its capacity will increase.

4. Turn off the stove, heated rear window, air conditioner, radio and headlights. Squeeze out the clutch and start cranking. If the engine is injector, then we do not press on the "gas". Very often in 10 or 12 seconds, that is, the engine does not start the first time, here you need to muffle everything, wait another half a minute and repeat the operation.

It is not recommended to drive the starter for a long time. If each time the engine spins longer, then it makes sense to restart the engine and repeat until the engine starts completely. At most, it needs to be done 5 or 7 tries.

5. After starting, slowly release the clutch, keep the gearbox neutral, and for at least 2 minutes. If the engine is carbureted for 10 or 15 minutes, we warm up the car, and then we go.

6. For frosty weather, there are two "no". The car must not be washed. You cannot leave her on the handbrake all night. Do not try otherwise, as the brake pads will freeze. But with this misfortune, our people figured out how to cope. Ask the driver of another car, let him “blow” a little on the wheel of your car from his exhaust pipe. If you have somewhere to connect a hairdryer, then a hairdryer is best used to warm up frozen locks. Someone had to use different liquids to defrost locks, but you can freeze until you use them to open the lock, or this liquid itself ends up inside the glove compartment of a car.

7. Residents of the north do not sleep at night, and every two hours they warm up their cars, because their frosts reach 40 or 50 degrees. And those who sleep have a signaling device with a remote control, they have a memory that can be programmed to start from idle time or from frost. Such a thing costs from $ 200. And those who are richer have a starting device that costs from 4000 rubles, or there is a completely autonomous starting device that costs even more, but there will be no problems with the launch.

8. If, in accordance with points 1 to 5, the car does not start, we will try more radical measures. After turning off the engine in the evening, pour 10-200 g of 92 gasoline into the oil filler hole, remove the connector from the Hall sensor and turn the starter several turns. In the morning we will put the connector on the Hall and start the car.

9. You need to know that you can not use low-quality gasoline, for the engine it is a real disaster, especially in cold weather. When winter is frosty, then when stopping for a parking, we keep the gasoline level in the car no more than 2/3 of the tank volume. This will then significantly reduce the amount of harmful condensation. From him it is advised to cover the distributor and wires with special silicone.

10. The most radical measures that will be applied by professional drivers with many years of experience. The oil should be semi-synthetic, the battery should be kept warm at night. Antifriction additives are used in the engine. We inject the “Quick Start” essential liquid into the carburetor. We use all essential liquids according to the instructions. The candles should be clean, not old, preferably iridium, with a reduced gap.

In the morning we look to see if the exhaust pipe is clogged with ice. Blink the high beam and go. But at first we are not going so fast. We will drive at a speed of 40 kilometers per hour and drive several kilometers until the car is completely warmed up.

Well, if anything, then we hook the car on the "tie", turn on the 2nd gear and then it will start. But when it starts, don't let it stall, press the gas pedal and disengage the clutch. If this does not help, then it is better to leave her alone, because she also has a soul. She just doesn't want to go anywhere today. Unless, of course, the fuel pump is to blame.

Why does the engine refuse to start in cold weather?

Most of the inhabitants of our country live in regions with harsh and even extreme winter conditions. This period of time turns into a serious test for everyone, without exception, including motorists, for most of whom the refusal to start the engine in cold weather becomes a real headache. And, what is most unpleasant, even the owners of new cars are not insured against this. What are the reasons for this failure, and how to deal with it? Our online edition offers detailed instructions.

As you know, cold weather (especially severe frost) has a serious negative impact on any car. A vehicle is a complex technical device that requires the well-coordinated operation of many systems to start.

And sometimes it is very difficult to figure out which of these systems led to the engine start failure, but nevertheless it is possible.

So, which components of the car are primarily affected by frost? The most common causes of engine start failure are problems with the battery, fuel system, starter motor, alternator and engine oil. Let's take a closer look at each issue.

Battery problem

If your car won't start in cold weather, the most likely reason for this is the battery (in 80% of cases, the failure to start the engine in cold weather is associated with the battery). And, what is most interesting, even the owner of a new car may face a similar problem. The fact is that even in a new car, the battery can be discharged, as a result of which the battery does not have enough energy to crank the starter to start the power unit.

Signs of a low battery: If you hear howling sounds while turning the key in the ignition to start the engine, but the starter does not turn, then most likely the battery charge is low. As a result, the starter simply does not have enough energy to work properly.

Please note that if the battery is completely discharged or there are problems with high-voltage wires, then you may not hear anything at all when starting the engine.

Also, if your car's battery is completely dead, you are unlikely to see bright icons on the dashboard when you turn the key in the ignition.

Here are common reasons why a car won't start in cold weather.

In some cars, when the battery is completely discharged, the security system may stop working. Even if the battery is dead, the central locking may not work.

Decision: If your car won't start and you're pretty sure a dead battery is the cause, you have several options:

- Start the engine with another car ("light" from another vehicle)

- Install a charged battery instead of a discharged one

- Remove the battery and take it home for charging.

It is possible that your car's battery has failed. For example, over time, old batteries simply stop holding their charge. In general, everything is exactly the same as on smartphones, whose batteries wear out over time and cannot hold a charge for a long time. So in this case, you have to buy a new battery. But how do you know when it's time to buy a new one?

To do this, the discharged battery must be charged and then checked for performance on the car. If the battery is quickly discharged again in the cold, then it is easier to buy a new one. It will be better than the hassle of restoring an old battery.

But not always unexpected discharge of a car battery is related to its expired shelf life. For example, as we have already said, the battery can be discharged in the cold even with a new car. How so? Very simple. For example, if the car has been left in severe frost for only a few days, the charge of a new battery can be significantly reduced. As a result, when the engine is started, the stored energy in the battery may simply not be enough to start the engine.

Also, a completely serviceable fresh battery may be discharged due to insufficient charging. This is especially true for those owners who use their cars infrequently in the winter or drive mainly for short distances. The thing is that when the engine starts cold in the cold, too much battery energy is consumed. By the way, undercharging the battery may reduce its service life. Therefore, we advise you to recharge the battery from time to time, either with a special charger, or once a week, travel by car for at least 40 minutes if you rarely use your car or if you have frequent short trips.

Naturally, after starting the engine, the battery replenishes the lost energy from the generator, which, in turn, receives torque from the engine. Unfortunately, the battery cannot quickly restore its charge. This takes 5 to 40 minutes, depending on the brand, model and weather conditions.

It is clear that during short trips, your car's battery (especially in winter) may not have time to charge from the generator. As a result, the battery charge may drop over time. Now imagine that with a low battery, you have to start a car that has stood in severe frost for several days. It makes sense that the car simply won't start.

How can you extend the life of your car battery?

In addition to regularly charging the battery in the winter, every motorist can increase battery life by following a number of recommendations:

  • Before turning off the engine at the end of the trip, turn off all electrical equipment of the vehicle, including side lights and dipped beam, windshield wipers, heater and radio
  • Avoid corrosion on battery clips and cables. This can interfere with the flow of electricity. With the engine off, clean the terminals from corrosion with a wire brush or go to a car dealer to clean the battery terminals
  • Before turning on the ignition make sure all electrical equipment is turned off
  • Avoid heating the seats, mirrors and windows for longer than necessary ... All this takes a lot of energy. As a result, the battery is under heavy load. Also, try not to use the turntable and radio when the engine is off. Remember that car audio equipment also draws too much power, putting unnecessary stress on the car's battery.
  • If possible, park your car in a warm garage If it is too cold outside
  • Service the battery correctly especially if she has served more than three years
  • Be sure to turn off the side lights when leaving your car , low beam headlights, and also did not forget connected gadgets in the cigarette lighter or USB connector

Generator problems

An alternator is an electrical generator that charges the vehicle's battery while the engine is running. If your car has a relatively new battery, but it constantly loses its charge (even in the absence of frost), then the likely cause of this could be a generator.

Symptoms of a generator malfunction: If the engine starts, but then stalled almost immediately; flickering of car headlights; flickering dashboard or dim icons on the dashboard; the smell of burning in the cabin, which may come from overheated equipment.

Decision: If you do not understand the device and car repair, then at the first signs of generator failure, contact the technical center.

Unfortunately, buying a new generator is expensive. But a broken unit does not always mean buying a new one. It happens that the old generator can be restored. And repairs will cost you less. It is noteworthy that a remanufactured generator can work exactly the same period as a new one.

Starter problems

Another common cause of failure to start the engine is failure of the starter, which uses electricity from the battery to operate. It is the starter that starts the car engine. By the way, many modern cars are equipped with stop-start systems. Typically, these vehicles are equipped with high power starters with extended service life in order to cope with the constant cycle of engine on / off during vehicle stops. Nevertheless, sooner or later, even the most reliable starters fail. Moreover, surprisingly, the service life of starters in cars with a stop-start system is, on average, slightly lower than in cars without such systems.

Signs of a malfunctioning starter: The most obvious sign is clicks when the ignition key is turned and the engine fails to start.

But how do you know if the car doesn't want to start because of a discharged battery? Everything is very simple. If at the moment of starting the engine the electrical equipment of the car is working normally (including the headlights), then, most likely, the failure to start the engine is associated with the starter.

Decision: Naturally, in the event of a malfunction of the starter, it is required to dismantle it for subsequent repairs or to install a new unit. By the way, usually those workshops that are engaged in the bulkhead of starters offer not to wait for the end of the repair, but to purchase an already restored mechanism. In this case, you will hand over yours and, by paying extra, you will pick up a working starter. In some cases, you can save a lot of time this way.

Unfortunately, not in all cases the car starter can be repaired. Everything, of course, depends on the type of breakdown.

Fuel system problems

Over time, the vehicle's fuel system can become contaminated and cause the engine to fail to start due to insufficient fuel in the injection system. Water can also enter the fuel system (for example, as a result of the accumulation of condensate or poor-quality fuel entering the fuel tank), which will turn into ice in severe frost. This can lead to fuel ignition problems. As a result, under certain conditions, you will not be able to start the engine in the cold. Remember that the fuel line in a car is not large enough and even small ice particles can completely stop fuel circulation.

Signs of a malfunctioning fuel system: While starting the car, the engine almost started, but there was a misfire. The engine has started, but it runs unevenly (rpm jump). The car has lost power. The engine may stall while driving.

Yes, of course, all these symptoms can also indicate other problems with the car (including sensors), but if you are faced with a problem with starting the engine in the cold, you should first of all, together with the battery, generator and starter, check the performance of the fuel systems.

Decision: If water gets into the fuel system of your car, you may need a professional flushing of the fuel line at a technical auto center.

You can also reduce the risk of water build-up in the fuel system. To do this, use special fuel additives that are sold in car dealerships. As a rule, such products contain alcohol, which can collect and retain water, then remove it through the exhaust system of the car. We also advise you to fill the tank full of fuel in winter in order to reduce the risk of a large amount of condensation forming in the tank.

If your car runs on diesel fuel, try to use only quality fuel. Remember that otherwise it can freeze elementary in the cold, thereby preventing the engine from starting.

You are using the wrong engine oil

First of all, frost affects engine oil. So, the lower the temperature outside, the thicker the oil becomes. This makes the engine difficult to operate, which in turn puts a heavy load on the battery. As a result, if the oil is literally frozen, turning into a jelly-like, heavy-flowing mass, starting the engine can be difficult.

Signs of problems starting the engine due to engine oil: If your engine oil becomes too viscous at low temperatures, then most likely you will not be able to start the engine, since the starter will not crank it at the moment of starting. To start the car reliably, use winter engine oils that have a low viscosity. It is worth noting that it is better not to use such engine oils at high positive temperatures, since they will not provide high-quality engine lubrication.

Decision: Check your car manual to find out which engine oil the manufacturer recommends. If it is allowed according to the instructions, switch to a more viscous engine oil for the winter period of time (fill in winter oils) or use all-weather grades of engine oils.

Here is a list of engine oil designations that are suitable for use in the winter season: SAE 0W, 5W, 10W, 15W, 20W, 25W.

Pay attention to the number in front of the Latin letter W... The smaller it is, the lower the temperature threshold for using the oil. Accordingly, if you live in a region with cold climatic conditions, engine oil with the designation 0W ... True, only if the car manufacturer allows the use of such markings in the manual for the car.

Cars with carburetor

If your car was built more than 30 years ago, then it is most likely equipped with a carburetor, which in your car is responsible for adjusting the fuel mixture for combustion in the engine's combustion chamber. Unfortunately, carbureted cars are the most prone to cold start problems.

For example, carburetor nozzles are often clogged with ice. As a result, the vehicle engine may not start or function properly.

Therefore, in cold weather, while starting the engine on a carburetor machine, keeping your foot on the clutch (if the machine is equipped with a manual transmission), gently press the gas pedal slightly. This will provide a small amount of fuel to the carburetor to help start the engine.

All modern cars are currently equipped with an electronic injection system and do not have the same cold starting problems that owners of old carburetor cars usually face.

Naturally, these are not all the reasons that can lead to engine start failure. For example, a car may not start due to sensor problems, malfunctioning spark plugs, ignition coils, fuel pump, etc.

But in general, if these components are defective, you will notice problems with starting the engine, not only in cold weather.

AUTOCODE portal - the whole history of the car in one click!

So, it's freezing outside of minus 30, your car is frozen and won't start, all the ritual dances around it are performed and there is no energy to waste time. Most likely, due to frost and as a result of infrequent use of the car, your battery is pretty much discharged. Follow our tips to learn how to start your car in cold weather quickly and correctly.

Advice 1. Check the contact of the terminals with the battery

The car may not start due to poor contact between the terminals and the battery. This can happen not only in severe frost, but in any other weather. In any case, it is better to check the contact of the connections first. To do this, open the hood of the car and use wrenches (usually a 10 open-end wrench), alternately tighten both battery terminals to the limit. If these manipulations were enough for the car to start - luck is on your side! But if the car still does not start when you turn the ignition key, then your battery is really dead.

Tip 2. Move the battery to a warm place

If time is running out (if not, read advice number four), you can unscrew the battery and take it to a warm room to "warm up". Depending on room temperature, it will take 30 minutes to three hours to warm up a frozen battery.

Attention! Never try to heat the battery with heat sources forcibly, it is dangerous to your health and performance of the battery. Only gentle warming under the influence of room temperature is suitable here.

Tip 3. Charge the battery from the charger

Again, if you have at least an hour of time, we recommend charging the battery. Either take the battery home, or charge it locally, naturally, if you have a power outlet and charger handy.

To recharge the battery, you need to disconnect the car terminals from the battery, and connect the charger clamps in their place. Plus to plus, minus, respectively, to minus. A half hour charge may be sufficient.

Tip 4: Energize the car battery with headlights

To start a frozen car without removing the battery, try to cheer it up. To do this, turn on the dipped or main beam headlights for 15-20 seconds. And only then turn the key in the starter. The car engine should start, and if this did not happen immediately, wait a couple of minutes and repeat the manipulations with the high beam headlights. If the car does not start from 3 approaches, it is a serious matter, the battery is discharged thoroughly and you need to change the strategy.

Tip 5. "Light" from another car

Remove gloves from your hands, raise your right hand parallel to the ground and bend your thumb. Catch a passing car and ask the savior to light it up. To properly and safely light one car from another, you need to take three simple steps:

Remember: The black terminal of the battery is negative, the red terminal is positive.

  1. First connect the positive terminal of the discharged battery and the same positive terminal of the charged battery with wires with lighting clips. With the second wire, connect the negative terminal of the charged battery and, attention !!!, ground (metal part of the car engine). Do not connect the negative terminals together.
  2. First you need to start the car with a charged battery. Let it run at 2000 rpm for about 20 minutes. This time will be enough for your frozen battery to recharge from the donor to the level required to start the engine on its own.
  3. Start your car and, if the start is completed, let both cars work together for another 5-10 minutes. Disconnect the wires from the batteries in reverse order.

Before starting the movement, we recommend to idle a little in order to slightly increase the charge in the battery.

Tip 6. Try to start the car from the pusher

There are no other cars in the area, and the previous advice didn't work? Never mind, we will help you start your car in this terrible frost in a different way.

Attention! This method of starting the car is only suitable for owners of a car with a manual transmission and, preferably, with a carburetor.

In our case, we cannot do without outside help. It will take another pair of hands. One drives, the second pushes. We start the car from the pusher. Basic Rules:

  1. The one who is in the passenger compartment turns the ignition key and, keeping the clutch pressed, puts the gear lever on II or III speed.
  2. The one who is less fortunate and who pushes the car in the cold, accelerates it at least to a speed of 10 km / h. This is the speed of a leisurely run.
  3. Release the clutch gently and the car should start. Let the vehicle warm up for at least 10 minutes.

Tip 7. Start the car using special equipment

If there is a car service nearby, you can be quickly assisted with starting the car engine. Nowadays, portable starters and chargers are increasingly used. This is the easiest and safest way to start your car in cold weather.

See the selection: TOP-5 powerful starters and chargers for cars

Watch a video about different starters and chargers:

Tip 8. Buy a new battery

This is the most expensive way to start a car in cold weather. Buy a new battery with a high capacity. All new batteries are sold in a charged state and you will start the car half a turn.

Other reasons why the car will not start in cold weather

If the battery is functional and fully charged, it is possible that the car will not start in cold weather for the following reasons:

  • Spark plugs filled;
  • Starter defective;
  • The engine oil is too thick;
  • The ignition system is out of alignment;
  • The fuel supply or low-quality gasoline is interrupted.

Timely prevention will help you not to worry about how to start the car in minus 30

Timely preventive maintenance is the key to a calm winter for drivers. It is better to change the oil in the middle of autumn, preferring types with the alphanumeric index 5w or 0w. Such oils will not thicken even at -30 degrees. Also, do not forget to change the fuel, air and oil filters in the fall.

In addition, in order not to worry about how to start the car at minus 30, it will not hurt to check the level and density of the electrolyte even before the onset of cold weather, if necessary, change the washer and antifreeze, check the spark plugs, armored wires, the tension of the generator and its charging.

Kolodiychuk Andrey , specially for ByCars.ru

There may be several reasons for problems with a cold start, a banal battery discharge is far from the only and not the main one. Problems with low-quality oil and a faulty ignition system, as well as incorrect sensor readings, lead to malfunctions as often as a frozen battery. For a quick start, it is necessary to identify the malfunction and try to correct the operation of the equipment. What procedures are there for this?

Give a "light"

If the battery has lost its charge in the cold and does not deliver the required starting current, then you can use the battery from a nearby vehicle.

The Za Rulem experts advise to fit the donor closer to the hood of the frozen car and turn off the engine. Take the crocodiles and connect one end to the positive terminal of the donor, and then to the positive terminal of the patient. The second wire must be fixed on the negative terminal of the donor, and its other end - to the "mass", that is, to any unpainted metal part of the engine compartment. The battery will start to be powered from someone else's current source, and you can try to start the motor.

In this case, confusion with the polarity should not be allowed, it can damage the on-board electronics. You can not bring "lighting" when the motors are running simultaneously on two generators.

Keep your battery at home on frosty nights

Overcooling of the electrolyte leads to an increase in the internal resistance in the battery, due to which the charge drops sharply. After several hours in the cold, it stops delivering the required starting current. This happens more often with old devices, which have very worn out lead plates, then the batteries need to be replaced with new ones or kept warm. If you take them home and take them back in the morning and install them correctly on the car, then the chances of starting the engine without hassle will increase dramatically. True, this is a troublesome event, and another problem appears. The battery should not be left indoors where people are constantly present, as it will evaporate some acid. When charging with an external device, old batteries still emit oxyhydrogen gas. In general, it is better not to engage in heavy lifting, but to buy a new battery.

Buy a launcher

If there is no one to "light", then you can buy the so-called jump-starter (booster).

These devices with a current rating of 300-1700 A work similarly to a battery, but smaller in size. After 2013, boosters based on more reliable lithium-polymer plates appeared on the market, due to which they retain their charge at low temperatures. The jump starter is equipped with crocodiles for connecting to terminals and USB ports for charging gadgets, as well as a built-in digital voltmeter and LED flashlight.

The battery is good, but there is no ignition

It often happens that the key is turned, the starter turns the crankshaft, the engine rumbles, but does not start. The reason for this behavior appears to be the lack of spark or fuel. To facilitate the work of candles and improve mixture formation, chemical agents can be used, that is, aerosols for a quick start. They contain diethyl ether, petroleum ether, propane-butane, heptane. The principle of their work is as follows: create the first flashes in the cylinders and set the pistons in motion, simultaneously warming up the combustion chamber and candles.

If the driver has direct access to the throttle valve, spray the agent directly there. If there is no access, it is better to spray ether into the air filter connection. After spraying, crank the starter and the engine should start.

Starting the motor "from the pusher"

If there are no technical devices at hand, then physical strength can help with starting the motor. If you accelerate the car in neutral by pushing from behind, the engine will spin the crankshaft and start by itself. True, there must be a gasoline engine, a manual transmission and a couple of assistants.

To start the engine "from the pusher", you must release the parking brake, turn on the ignition and put the second or third gear. Having accelerated to 20-30 km / h, you need to smoothly but quickly release the clutch. The motor will start to spin and start. If the launch is successful, then it is worth turning on neutral and adding a little gas in order to heat up the combustion chambers faster. After that, you can drive the motor a little without load and hit the road.

The car does not start in frost, how to warm up and start - advice from experienced.

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Probably every car enthusiast faced one or another problem with a car during severe frosts. But by far the main and most troublesome is starting a frozen engine. Therefore, in this article, we will consider ways to warm up a car engine and start it.

car won't start

If a dead or old battery is to blame.

The first thing to do if your car won't start in cold weather is to charge the battery. There are three ways to do this:

  • - we charge directly in the garage using the charger.
  • - we remove the battery and carry it into the heat (for a hundred, tire fitting, home) where we charge it (recommended).
  • - we ask you to "light" your neighbor and start your car from his car and charge the battery already in your car.

While the battery is charging (in the event that you have chosen one of the first two methods above), you should prepare the engine for starting - warm it up! To do this, increase the temperature of the engine oil. An increase in temperature contributes to its liquefaction, and this, in turn, reduces the resistance of the crankshaft in the crankcase with oil and in mating units where it is used for lubrication.

We warm up the engine.

To warm up the engine, you can use a blowtorch or a gas cartridge with a burner (this method cannot be used on cars with a plastic pallet installed, if you do not know what your pallet is made of - metal or plastic, then this method will not work for you). To do this, cover the engine compartment with a thick cloth (felt, tarpaulin, etc.), direct the flame from the fire source to the engine crankcase and warm it up for 10-30 minutes (be extremely careful, with this method, oil leakage in the engine compartment is not allowed - possible fire).

Another way to warm the engine is to use electrical equipment that emits or creates a warm air stream. If you are using a heater or high-power light, these should be installed as close to the engine as possible, ideally if they will fit underneath. The warm upward flow will rise, thereby warming up the entire engine, and the engine compartment hidden from above will retain heat. If you use a heat gun, then the flow of the forced air must be distributed 50/50, directing part to the radiator, and the second part to the engine compartment (down the engine).

Bad gasoline.

If you refuel with bad gasoline, then there are two possible options - the first is that the water in the fuel line froze overnight. Here, only one thing can help you - this is a warm box. Signs - the starter is spinning, but the car will not start, despite the fact that the candles are "dry". Fuel is not being supplied. The second variant of the development of the event, everything is the same, only fuel is supplied. You can only solve this problem either completely draining the old gasoline, or you need to top up high-quality gasoline 2-3 times more than it is now in the tank and pump the system until high-quality gasoline arrives at the engine.

The oil is out of season.

Summer oil is also one of the reasons why the car does not start in cold weather. This is due to the fact that it has a high viscosity and at low temperatures it becomes virtually non-rotating. The starter is simply not doing its job. It is strictly forbidden to operate the car. It is necessary to take the car to a warm box, where, after "defrosting", replace it with high-quality winter oil recommended by the manufacturer.

Candles are flooded.

If you have made several attempts to start the car that were unsuccessful, for example, due to a dead battery, then you may have flooded the candles. You can only be convinced of this by unscrewing the latter from the engine. If the candle is "flooded", then it will be wet, dirty and smell strongly of gasoline. It is necessary to wipe them dry and, if possible, "ignite" (hold a dry candle over the flame of a lighter).

To avoid problems with starting a frozen engine, the following measures must be taken.

Let's start with the fact that before the onset of cold weather you need to service your car in a timely manner. If necessary, recharge your battery and do not allow it to discharge below 65% during winter operation! Also, it is not allowed to operate a car in winter with an electrolyte density of less than 1.12 g / cm3, the freezing threshold for such an electrolyte is a temperature below -10 degrees. When operating a car with an ambient temperature below -35 degrees, use only oils with a viscosity grade of no more than SAE 5W.

It is also advisable to install a special autonomous heater on the car, which operates from a 220 volt network and heats up the coolant. The engine must be insulated for the winter by covering the engine compartment on top with a thick cloth or car blanket. If this is not enough and the machine takes a long time to warm up and the temperature cannot rise to the working temperature, insulate the radiator by covering it with the same cloth in front. If the battery in your car is not in the engine compartment, then you need to insulate it separately as well. Check and, if necessary, add or replace coolant that has reached the end of its service life. It is also recommended to change the air filter for the winter period, because it is in the cold season that the quality of the air-fuel mixture and the speed of filling the combustion chambers are very important.

But compliance with all these conditions, of course, is not a panacea for trouble-free operation of the car in the cold. Even a well-charged battery in severe frost can let you down and you will not be able to start the car in frost. To do this, try to follow the weather forecast. If severe frosts are promised, then you need to bring the battery home or to another warm room or turn on the auto-heating function of the engine (if you have one). This will increase the likelihood of a successful engine start.

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