Why doesn't the car start? Why not start 2109

In frost, many drivers face the impossibility of operating the car VAZ-2109. The launch of the motor in the warm and cold season has its own characteristics. If you don't touch the complete engine malfunction, then minor changes occur at low temperatures. In this case, there are two types of engine - injector and carburetor, - whose properties are different. The reasons for the difficulties of launching a different engine can be found out, but should be sorted out in their properties.

Injector and carburetor engines distinguish. Which one is better in the cold season? Of course, the injection. The carburetor is installed in the old vehicles of the car, and in the new models have long used the injector. Nevertheless, the operability of the carburetor allows not to replace it with the injector.

In the carburetor, adjust the starting device. The launch of such an engine in the frost has a specific plan - about complex words:

Open the hood and pump the fuel to the carburetor on the fuel pump;

Try to enable far headlights for a few seconds;

Squeeze the grip a couple of times;

Then - gas pedal and wait about 15 seconds;

Pull the handle of the supply.

What are the reasons for not the launch of the carburetor in the cold

Need cleaning carburetor. The machine can stuck without a suction.

Air conditioning for a minus temperature. Due to the temperature change, humidity on cams in the rubber appears, when the engine is started, the rubber does not produce that power that should go to the candle to distribute the combustible mixture.

Frozening electrolyte in the battery.

Motor oil.

Before finding out the reason, usually check the ignition system.

Separate word about engine oil. Oil must be approached not only by the engine, but also correspond to certain temperature climatic conditions. Mineral oil freezes faster in frosts, so it is not recommended for minus temperatures. There are types of oil as synthetic and semi-synthetic.

The semi-synthetic oil is cheaper, so it is often afraid to use, without hoping for its positive characteristics. If it comes to winter, the semi-synthetic oil is ideal for such conditions. It reduces the viscosity of metal parts that are moving to the cold.

The injection system has its own electronic unit that controls the engine. There is no manual adjustment here, and all control is laid in the controller. This features an injection engine from carburetor. However, there is a negative line of an upgraded engine, since it is in the frost gasoline can pour candles.

If everything is in order, but the car stalls again, to heat the intake manifold with hot water. This method applies almost all drivers.

Insufficient intensity when scrolling the engine starter can also lead to it inability to run it.

So, lay out the reasons why the injection engine does not start:

Lack of sufficient intensity of the scrolling of the motor.

Problem with flooded candles.

Fault.

VAZ-2109 has an 8-valve system. Many argue about the properties of the 8-valve and 16-valve motor. Some believe that 8 valves are the last century, and others find more and more minuses in a new 16-valve engine solution. The fact is that the engine that has 16 valves in the VAZ-2109 car, does not exist in the original. It can actually remake it yourself, but the car is created precisely with an 8 valve engine. This affects the entire engine system.

If the carburetor engine is actually fixed at home, the injector will be able to repair only specialists with certain equipment. In situations, when a carburetor or injector is poorly started, the owner must be confident in the working functions of the motor, and only after looking for solutions, based on the main problem of low temperature.

What to do if your favorite VAZ 2108, VAZ 2109, VAZ 21099 refused to start? This article will consider the troubleshooting scheme. As you probably know that the engine is started and you need three conditions: air, gasoline, spark. When the crankshaft engine is rotated, the VAZ 2108, VAZ 2109, VAZ 21099 is suction of a combustible mixture inside the cylinders (mixtures of air and gasoline in a certain proportion). After closing the intake and exhaust valves at the end of the compression cycle, a spark will appear on the candle, which flames the combustible mixture - the engine starts.
Consider the diagnosis of definition of a chain fault. The whole method is described in detail in the figure, the text provides the necessary comments on items.

1) If the starter does not turn the crankshaft VAZ 2108, VAZ 2109, VAZ 21099, then check the following: the battery must be charged, when turning the ignition key, it must be heard a click of testing the retractor relay, all connectors must be put on the starter.

2) If the starter rotates the crankshaft. It is necessary to determine that it does not enter the cylinder, combustible mixture or spark. First we are looking for a spark. To do this, remove the high-voltage wire from any candle, bring to the distance of the centimeter to the mass and turn the starter.

3) If Vaz 2108, VAZ 2109, VAZ 21099 does not search for a spark, check whether a spark is on the ignition distributor (rubber). For this, we remove the central wire from the distributor, bring to a distance of 1 cm to the mass and turn the starter. If I spark From the wire to the mass - the problem in the ignition distributor: check the slider, clean the contacts.

4) If there is no spark on the ignition distributor, the diagnosis of the ignition system is necessary.
There are two options for further troubleshooting:
A) Using the device for diagnosing a contactless ignition system.
B) manual identification of malfunction.
A) You have a device, there may be different types, but the principle of work is the same: the power supply and testing of the Hall and switch sensor are displayed by light bulbs.

The device is connected to the rupture of the switch circuit. Remove the switch from the switch and connect to the device connector. The second device connector is dressed on the switch. Turn on the ignition: Must burn the power supply light bulb and the power sensor power light bulb.

When rotating the starter VAZ 2108, VAZ 2109, VAZ 21099 must blink: switch control light, pulse light bulb from the Hall sensor.
If the switch control light is blinking - replace the switch.

If the impulses do not go from the Hall sensor, disassemble the ignition distributor, make sure that the starter is rotated when the starter rotates. If the starter is spinning, and the distributor's runner is not - torn the timing belt. If the slider is spinning, and there is no signal from the Hall sensor, - replace the Hall sensor.
B) Fault search option without an ignition diagnostic device VAZ 2108, VAZ 2109, VAZ 21099.Select the ignition distributor and make sure that the distributor runner spins when the starter is rotated. If it does not spin - torn the timing belt. If the slider is spinning, check that the dispenser's drum does not touch the Hall sensor. Make sure the Hall sensor and connector are correct. If everything is normal - change the switch, the most frequent reason when there is no spark - the switch burned down. If, after the replacement of the switch, the spark did not appear, the suspicion falls on the ignition coil and connecting wires. The ignition coil (according to the folk babin) fails is extremely rare, but such cases are also there.

Ignition coil

5) If there is a spark, but the engine does not start, removing the air filter cover.

Filter is clean, not covered with oil? We try to start the VAZ 2108, VAZ 2109, VAZ 21099 Without the air filter cover, started - it means there is no air access to the carburetor, the filter is clogged, the air supply, the filter is covered with oil.
6) not started - removing the filter with the lid and unscrew the fuel hose from the fuel pump to the carburetor from the carburetor. We turn the starter - there must be gasoline. Does not sprinkle? Or the fuel pump has failed, or fuel from the tank is not fuel, if it is of course there.
7) If gasoline splashes when the starter is turning, unscrew the fuel line of the fuel line from the carburetor. Shoot the return with your finger, and dunge the mouth into the feed. Air passes into the float chamber? If so, it means and gasoline also passes, it is necessary to blow the entire carburetor with compressed air.
8) Does the air in the float chamber? Check the carburetor grid filter. Unscrew it, clean. Did not help? - Perhaps the Zalip needle valve. Follow the side of the carburetor to a wrench or dunge into the feeding hole with compressed air.
9) If anyway does not manage to blow the air into the float chamber - remove the carburetor cover. We are in hand and again trying to blow. Air does not pass - change the needle valve.
10) If the air passes when the lid is removed, and the fuel jets are not clogged on the carburetor, the fuel jets are taken. It is necessary to complete the carburetor.
11) If, after the work done, the machine still does not start, unscrew the candles.
Look covered with gasoline or not? If they are filled, it is necessary to dry. We turn on the gas stove and keep the pliers dripping the candle over the fire. If the candles are still dry - you can try to sprink a few drops of gasoline in 1 carburetor chamber (closer to the cabin). You can break the carburetor with the resulting vacuum and the engine will begin.

The techniques described above will help to start the VAZ 2108, VAZ 2109, VAZ 21099 in more than 90% of cases. However, in the case of difficult problems, the timing belt is not a few teeth, poor or missing compression in the engine, the carburetor is not adjusted) only for a hundred.

On the VAZ-2109 car, original carburetor engines were installed, and then injection. Regardless of which engine is on nine, it will not run with a defective start system, since starter Or can not turn the crankshaft, or rotates it with an insufficient frequency. The reasons for such a state of affairs may not be charged accumulator battery, oxidized terminalsAs at the conclusions of the AKB and on the traction relay, in which the internal contacts can also be burned. The failure of the overtook clutch of the starter will also lead to the fact that the engine will not start, as the crankshaft will not rotate, although the starter shaft will rotate.

Another malfunction that will not allow the engine carburetor and injection nine engines, will fail gas distribution mechanism. It can simply break or what is more likely to cut a teeth, also in case of loosening the belt tension, it can jump onto a pair of teeth on the drive gear, which will lead to a violation of the phases of the gas distribution and the engine in this case will not be launched.

If the gas distribution mechanism and starter is all right, then on carburetor engines VAZ-2109 further check power system and ignition system. Start checking these systems usually with the presence of sparks on the ignition candlelight. If it is not for candles, then check whether it is on a high-voltage wire, coming from the ignition coil. In the presence of a spark in this place, it will have to check if the runner of the battle of the battle of the lid is not burned, if the contacts of the lid of the lid of the lid are harvested and the coal slave does not depend on the transmitting the slider. If there is no sparks on the central wire, then the ignition coil itself will be the culprit, or the switch.

In the presence of a spark on the ignition candlelight, you will have to check the work gas station and carburetor. The operation of the benzonasos is checking the disconnection of the benzing from the carburetor and supply fuel in manual mode. If there is no pressure or it is weak, it means that the aperture of the fuel pump broke. If the pressure is strong, then you will have to remove the air filter and the lid of the carburetor, and then blow the jets with compressed air, and also do not forget to check the operation of the needle valve, there are cases that the fuel flows into float chambers then stops.

On injection engines VAZ-2109, and ignition, and fuel supply to the engine cylinders, controls the electronic unit that receives information from seven sensors, and then it processes and gives the corresponding commands to the nozzles and the ignition coils. When the crankshaft position sensor fails, the engine will not start, but in order to determine this, it is necessary to diagnose and over the error codes, detect a malfunction. The engine will not start and when the electric fuel pump fails, or due to the lack of voltage on its terminals, or due to the short circuit of its windings.

\u003e In the article "" We examined in detail the reasons for which VAZ 2108, VAZ 2109, VAZ 21099 Carburetor does not start. However, injection VAZ 2109 have its own characteristics, so this article is intended to help the owners of the VAZ 2108 2109 21099 injector, when their iron horse stopped starting. Differences in the search and elimination of malfunction in carburetor and injection engines are very significant. Thus, the owner of the carburetor VAZ 2108, VAZ 2109, VAZ 21099 can determine with closed eyes why his car does not start. However, if you transplant it to the injection VAZ 2108, VAZ 2109, VAZ 21099, which does not start, then a person will not know what to do.
It is clear: electric fuel pump, computer, bunch of sensors, nozzles, ignition module. Not knowing what and in what order to look, the situation when the injection motor will not start can be pretty frightening the owner of the car.
Here, as in the diagnosis of any malfunction, a clear thoughtful sequence of actions to identify malfunction is important. So let's start if the engine VAZ 2108 2109 21099 Injector does not start, then the old rule works here: "Or there is nothing to burn, or there is nothing to set fire." There is no spark, or does not come in a combustible mixture into the engine cylinders.
1) We check whether there is a spark. To do this, unscrew the candle from the cylinder, press to the mass and turn the starter. If the spark is scattered on the candle, then the problem is in the fuel supply system.
However, it is necessary to remember that if the twisted candle is wet, and there is a spark, it is necessary to check the tags.

Tag on the gear of the camshaft VAZ 2109

Tag on flywheel VAZ 2109

Due to the fact that the timing belt is slipped by one or more teeth, the phases of the gas distribution and the engine VAZ 2108 2109 21099 The injector will not start.
If the spark does not slip on the candle, the reason may be: the crankshaft position sensor (hereinafter referred to as the text of the DPKV), the crankshaft pulley, the ignition module, the ECU.
1a)Many are very afraid of the fact that in the injector. Yes, it is true, the wrong operation of the sensors can very much to spoil the life of the owner of the VAZ 2108 2109 21099 injector. I will say one important detail from which you will immediately become easier: engine VAZ 2109 will not start Due to the malfunction of one single sensor - DPKV. If any other sensor is faulty, the engine will start, only his work will be incorrect - it can trit, not develop power, increase fuel consumption, but it is obliged.
So, check the DPKV VAZ 2108, VAZ 2109, VAZ 21099, the integrity of its connector and wiring to it. Very often rotates the DPKV connector, since moisture and dirt can fall on it, although the sensor itself is very reliable. If there is a suspicion that DPKV is faulty, it can be removed and easily verified. To apply nutrition from the battery and bring metal to its working area. When the metal approaches the metal, the output voltage of the sensor should increase, when removing the metal, the output voltage of DPKV must be close to zero.
If DPKV is faulty, change it and try to start. Not started - go on.
1B)Crankshaft pulley. What is the problem here? The problem is that part of the pulley with teeth on the DPKV rubber, and it can either fall off or scroll.

Pickled out part of the pulley VAZ 2109 with teeth for DPKV

Accordingly, DPKV does not work out when the crankshaft rotation is rotated and the computer does not give the command to the spark on the candle. You can simply remove the timing belt cover and visually make sure that the crankshaft pulley is spinning and it is working. At the same time, check the integrity of the timing belt and tags.
1B)The reason that there is no spark can be a malfunction of the ignition module. You must also check the connector on the ignition module is not its integrity. If possible, you can take the ignition module from the other machine and check, the engine will begin or not.
1g) With a faulty ECU, the engine will naturally be started.
1d) No contact in wiring. All devices can be integers: both the ECU, and the ignition module and all sensors. But between them in the wiring there will be no contact, for example, the wire is cut off or the connector is oxidized.
2) If the spark is, but the engine does not start, the engine power supply system is needed.
We check whether fuel is supplied to the nozzles:
2a) Does the fuel pump shake?

VAZ 2109 with an injector Electric fuel pump

Fuel pump VAZ 2108 2109 21099 Injector - electric, it is immersed in a car benzobac. When the ignition is turned on, its operation should be heard. To test it pumps fuel or not, you can relax one of the supply fuel pipes, substitute the container under them and turn on the ignition - gasoline should be filled out of the nozzle.
The pressure in the fuel ramp of the VAZ 2109 with an injector can also be measured using a conventional pressure gauge. On the pressure regulator installed on the fuel ramp there is a special removal for connecting a pressure gauge. We connect the pressure gauge and look at the pressure in the fuel line. It should be about 4 atmospheres. If the pressure gauge does not show the pressure, then the fuel pump does not work.
2B) If the fuel filter is clogged, the pump will not be able to provide the desired fuel supply to the car nozzle.

Fuel filter VAZ 2109

Again, it is possible to understand the filter clogged or not, you can use a pressure gauge connected to the removal of the pressure regulator on the car's fuel ramp.
2V) clogging injectors.

Polluted Injector Engine Injectors

When the nozzles are clogged, they either do not pass the fuel at all, or the fuel goes in smaller quantities and is not sprayed, but dripping. Due to clogging, the injectors can be difficult to launch the engine VAZ 2108 2109 21099 Injector in the frost. Such a car usually does not develop full power while driving.
2g) The fuel may not be sprayed by nozzles if they do not receive signals for opening with the ECU. It is necessary to make sure that chips and all wires are planned on the nozzles.
3) When starting a cold engine in the frost, especially on injector engines VAZ 2108, VAZ 2109, VAZ 21099 often occurs such a phenomenon as slip-up, or cutting the timing belt teeth. At the same time, the phases of the motor distribution of the engine are disturbed and it cannot start.
To make sure that the timing belt did not slip, it is necessary to remove the belt cover and check the labels on the wheel of the camshaft and on the shaft of the flywheel. If all right goes on.
4) If the candles of VAZ 2108 2109 21099 flooded, then they need to dry. On the flooded candle, the spark is not formed. If you unscrew the candle, and it is all wet, then you need to unscrew all the others and rolling them to gas. If they are repeated, it is necessary to look for the cause elsewhere.
5) Some VAZ 2108 2109 21099 Injector cannot start in frost with a connected engine temperature sensor. Probably this feature of the firmware or something else. Think some temperature sensor chip, engine hard, but starts. When connected - no.
Such a feature can ask anyone in a dead end: and the spark is, and the candles are wet, and the belt did not slip, and the car does not start. Threw a temperature sensor, and she started. This situation is certainly the exception rather than the rule, but the owner of the VAZ 2109 is better to know about it.
6) Also a rare situation, but it happens. Sowing catalyst in the car silencer. In accordance with the requirements for ecology in the muffler of VAZ 2108, VAZ 2109, VAZ 21099 Injector is established by a catalyst that reduces emissions of harmful gases into the atmosphere. If this catalyst lies inside the silencer, then the exhaust gas exhaust will be difficult and the engine is either at all starts, or will be stuck. To exclude this item, it is necessary to simply weaken the fastening claw between the catalyst and the muffler so that the exhaust gases come out after the resonator.

The problems described above are the most frequent reasons that the engine VAZ 2108, VAZ 2109, VAZ 21099 Injector does not start, but it should be remembered that there are special cases in which to help only a hundred.

A fairly common question that covers not only VAZ cars 2109-2108, but probably all vases in general, since problems with the start of the engine are quite often and of this kind of machine.

Of course, the topic is beaten, but to get an answer to your question, which is why your car does not start, most likely it will not be possible immediately. Moreover, the reasons may be so much that it will take quite a long time for the diagnosis. So, the main reasons for which your car may not start.

Fuel system malfunction

• First look at the fuel index on the instrument panel. There are such drivers, usually beginners who do not look at the instruments, and will not always be able to navigate in the case when the fuel simply ended.
• Look, whether fuel enters the system. If the carburetor machine, pump the fuel pump manually and make sure that the gasoline enters the carburetor. If the injector - listen carefully, whether the fuel pump works when the ignition is turned on. If not, look for the cause, faulty fuse, breaking the chain or something else that could lead to a similar outcome.
• The power system was clogged: it is often that garbage gets along with fuel in a carburetor and even one crab fuel is able to deal with the normal start of the engine.

Ignition System Problems

• Check if there is a spark on the candlelight. If it is not, it means that the reason is in the ignition system. It is necessary to check the connection of all high-voltage wires to the module or the traver, it is especially true for the central high-voltage wire (for the carburetor engine model).
• If it is the reason for the disappearance of the spark and the consequence of the fact that the car stopped starting.
• Check the performance of the traver - open the lid, look at the integrity of the coal in it. Also check the contacts or.

Problems with electrician or electronics injector

If your VAZ 2109-2108 is injector, then the problems for which he refused to start, can be much more. One Esud Sensors can be counted about 5 pieces that can affect the normal motor launch:

1. DMRV - Mass Flow Sensor
2. RXX - idle regulator
3. Throttle position sensor
4. Sensor position crankshaft
5. Phase sensor

It is also not worth overlooking even the simplest problems, such as the ignition lock, starter and its retractor relay, as well as fuses.

Does not start due to problems with the timing or piston group

If the timing belt rearranged to a pair of teeth, the engine may not start, as the ignition has begun. In order to return it to life, it is necessary.

The valve clamps are clamped - too, there is a chance that it is for this reason that the engine starts difficult and with time even impossible. In this case, it is necessary to produce.

Weak compression is the case when the difficult launch is manifested daily, if the piston is already on the verge of full decline. This is due to too much generation and wear of the details of the piston group: rings, pistons and cylinders.

There is something to supplement this list, do not hesitate - we write in the comments to the article below.