VAZ 2114 won't start

• Failures in the fuel system
• No ignition when turning the key
• No spark at the spark plug
• There is a spark, but the engine does not start
• Useful tips
• Useful video

A car that cannot be started is completely useless, since it cannot fulfill its main task of transporting people and luggage. For example, there are many reasons why the VAZ-2114 does not start, and all of them require a thoughtful approach and experience in repairs.

VAZ 2114 will not start

Failures in the fuel system

It’s worth noting right away that there is no point in considering major engine breakdowns, since the average driver will neither be able to diagnose nor repair them, so you should pay attention not to those faults that can be eliminated with your own hands or in a short time.

For example, if a VAZ-2114 does not start, it is worth checking its fuel system, and first of all, you need to take care of the following aspects:

• presence of fuel in the gas tank (the sensor may be wrong);
• the integrity of the gas pipelines running along the bottom of the car from the tank to the engine;
• serviceability of the coarse filter in the fuel tank;
• the serviceability of the fine filter in the tank below, near the spare wheel.

Controller and fuel pump relay VAZ 2114

Of course, both the fuel pump itself and its relay can fail, which can partly be attributed to the car’s electrical network. You can determine the breakdown yourself by listening after turning the key in the ignition to the characteristic sound of fuel pumping - if there is none, the pump, relay or wiring is faulty.

Additionally, according to the instructions, you can connect a pressure gauge to the fuel network, measuring the fuel pressure in it: a reading below two and a half atmospheres will indicate an unlikely leak. In such a case, you will need to look for leaks in the tank and gas lines - for this it is better to drive the car into a pit.

Gasoline pump VAZ 2114

Unlike the coarse filter, the mesh in the tank under the bottom of the VAZ-2114 may well become clogged and littered, so it is worth checking it first if other faults are excluded.

If the starter turns, but the car engine does not start

The “smart” filling of this model can also be the culprit that a lot of effort is required to start the engine. Let's try to figure this out too. One of the “disturbers” of peace may be the crankshaft position control sensor. Based on its signals, the controller controls the injectors and ignition system. Malfunctions of this device interfere with normal starting.

Another source of difficulty lies in the most expensive sensor among them, the mass air flow sensor. Following its readings, the control unit creates an air-fuel mixture. It is easy to check, you just need to turn it off and check the operation of the engine. If the problems disappear, the sensor must be replaced.

In carburetor engines, starting difficulties were created when the carburetor jets were clogged (try blowing it out). The injector, as you know, does not have a carburetor, but the throttle valve assembly can create similar problems. This is especially true for engines with high mileage. Flushing with carburetor cleaning fluid solves such problems.

The temperature sensor informs the on-board computer about the state of the coolant. If in carburetor engines it does not affect engine starting, then in our case its readings are recorded by a computer, and it forms the composition of the working mixture to supply it to the combustion chamber. If it fails, starting a heated engine will be very difficult.

To more accurately determine faults, specialists use special equipment that pinpoints the faulty unit with great accuracy. We’ve talked about why the VAZ 2114 8-valve injector doesn’t start well, but at the end I’d like to give one more piece of advice. Look under the hood of your car often. This will make it possible to notice poor contact, air leaks, and other minor problems in time and will save you from unnecessary worries.

For some reason, it seems that many drivers of this model will be interested in the question of why the VAZ 2114 does not start well. Finding the cause of this phenomenon is not as easy as it might seem at first. This is due to certain difficulties in troubleshooting in this model, since injection systems differ from carburetor systems. The algorithm for identifying possible problems will be built differently, adapting to the design features of the machine.

No ignition when turning the key

The second broad area of ​​searching for the problem is the electrical system of the car, due to a malfunction in one of the components of which the VAZ-2114 does not start and does not respond at all to turning the key in the ignition switch. To begin with, just in case, it’s worth checking the functionality of the battery under the hood: many drivers, when starting a deep search for a breakdown, forget about such a banal reason for the lack of current.

You must carefully and calmly make sure that the ignition switch itself turns smoothly, without encountering obstacles or jamming, which in theory could lead to an unsuccessful engine start

VAZ 2114 battery

Next, you should turn your attention to more specific components and assemblies, checking their serviceability one by one:

1. Check the instructions for two relays - the starter and the ignition switch, which are located above the clutch pedal. You can evaluate their performance using the car manual, but usually they are simply replaced with ones that are known to be good for diagnostic purposes.
2. A faulty starter, or more precisely, a solenoid relay: if it breaks down on the road, you can try tapping it lightly if it just jams. Having reached the overpass, you need to turn it manually - connect the body to zero on the battery, and the other contact to positive.
3. If the starter actively begins to turn, the problem is not with it; if there is a current supply, but it does not turn, the brushes are broken. Lack of response will indicate a malfunction of the retractor relay, and a sharp and unpleasant sound will indicate a breakdown of the overrunning clutch in the starter.

Starter VAZ 2114

The connection of the contacts itself also requires study, since it is likely that they have broken or oxidized due to moisture - they will need to be cleaned or re-twisted, and then insulated.

If the starter does not work

During normal operation of the starter, the spark will not flow between it and the ignition switch. It is necessary to check the battery for functionality and charge. The voltmeter should show 101.8 V, and the hydrometer should show 1.22.

List of other breakdowns that can lead to a lack of spark in the VAZ-2110 injector:

1. Lock. In the case where turning the key is possible or difficult, but the cylinder causes difficulties, then it is necessary to replace the lock.
2. "Retractive." The problem is dangerous because the spark may disappear while moving. Heavy mechanical impact will eliminate the problem. For example, you can hit the starter hard. If there are technical verification capabilities, then it’s time to use them. A charged battery is required for this. The starter body is pressed at the zero phase, and the wire with a clamp from the positive is pulled to the “retractor”. The part starts to work, if there is no reaction, then repair or replacement of the “retractor” is necessary.
3. The working relay has a problem with the brushes. The main symptom is a loud cracking sound when a part is not working.
4. There is no spark at the power supply to the starter. A multimeter will help identify irregularities. For better results, it is recommended to consult a specialist.

Oxidation of contacts is a common problem with the VAZ-2110. If a full check of the ECU and repair does not bring results, then it is worth examining other contacts. Maximum attention is paid to the areas where the ground conductor is in contact with the battery terminal and the body. If the terminal is faulty, replacing the wire is sufficient. The surface of the body is treated with a metal brush.

No spark at the spark plug

Just among all the reasons that the VAZ-2114 turns over but does not start, most often motorists are faced with the absence of a spark at the spark plug. You can check this this way: by unscrewing one spark plug, connect it to a high-voltage wire and carefully, touching only the insulated parts, apply it to the cylinder head cover. At the same time, a second person must turn the starter from the passenger compartment, and if there is no spark, we need to look for the problem.

Difference between new and old candle

If the VAZ-2114 injector does not start, you need to pay attention, firstly, to the ignition module and the chip that is connected to it - these components not only often break, but also often come from the factory defective.

The condition of the crankshaft position sensor should be assessed: by monitoring the phases of movement of the cylinders in the block, it is an important component of the entire ignition system.

Although this sensor does not break down very often, it is necessary to check it, although in the absence of service it is practically impossible to do this - a professional oscilloscope is required.

Finally, a unit such as the electronic control unit of the injector could fail: electronic brains tend to fail on more expensive cars, so it is necessary to organize basic diagnostics for them:

• apply a spark to the first and third or second and fourth cylinders;
• recognize injection phase irregularities;
• As a preventative measure, clean the contacts on the electronic control unit from oxidation.

Bringing the car back to life

As for why a spark disappears, everything is probably very clear. Now, it would not be amiss to consider the order of her return. The reality is that in most cases, getting the spark back is a simple matter and just involves carefully checking the broken car. To be more precise, to normalize sparking it is required:

1. Firstly, check the spark on the injector using the method described above, make sure that it has disappeared, and, at least indirectly, try to determine the cause of the malfunction;
2. Next, it is enough to assess the current circumstances and act based on them. As typical situations, we suggest considering solutions to the following problems:
   the spark plug is wet, the presence and strength of the spark are unimportant, the carbon deposits are correct (brick color) - wipe the part and screw it back in;
3. the spark plug is wet (not always) and the carbon deposits are incorrect (white or black) - clean, dry the part and try to start the engine, if there is no result, change the spark plug and deal with problems in the fuel system (cleaning the injector, checking the ECU, etc.);
4. the spark plug is wet, there is no spark at all, the color of the soot is not important - we try to change the part, if there is no result, we check the ignition system and the operation of the injector.

In principle, in theory there are no particular difficulties in repairs of this kind. Despite this, it often causes difficulties in implementation for inexperienced motorists. To solve these, you need to act in the order described above, but if something doesn’t work out, it’s better to turn to professionals at a service station. This approach to repairs will not only save time, but also guarantee trouble-free operation of the car in the future.

Perhaps this concludes the most important information on today’s issue. We hope that the material presented was useful to you and provided answers to your questions. Good luck in operating and maintaining your car!

Sources used:

• https://vaz-remzona.ru/vaz-2114-net-iskry-inzhektor/
• https://autodont.ru/system-of-ignition/net-iskry-v-avtomobile-vaz-2114
• https://remontvazov.com/net-iskry-na-1-i-4-cilindre-vaz-2114
• https://swapmotor.ru/ustrojstvo-dvigatelya/net-iskry-inzhektor.html

There is a spark, but the engine does not start

If the starter turns, there is fuel in the tank, the pump delivers it, and the spark plug gives a spark - but the engine still does not start - you will have to turn to more specific units, since this situation is uncommon in the practice of owning a VAZ-2114.

First, you will need to check the injectors: this cannot be done in a garage; you will need to tow the car to a repair shop and clean them with ultrasound. If there is a breakdown on the road, you can easily diagnose faulty injectors - if the spark plugs are dry and not filled with gasoline, it means the injectors are not supplying fuel.

Another thing is that something incredible must happen for them to break in all four cylinders at the same time, and before that they did not force the engine to triple for some time.

Checking the injectors of the VAZ 2114

Even less common are problems with insufficient pressure in the fuel system, caused by failures in various electronic sensors of injection VAZs. In addition to the pump, for some reason the throttle position sensor or mass air flow sensor may fail. The electronic injector control unit will simply not allow the engine to start if at least one of the sensors gives it an error when accessed.

Why does the engine not start when the starter is working?

Kalina starter does not turn

Many drivers have more than once encountered a situation where, after turning the key, the dashboard lights up regularly, signaling the presence of fuel in the tank and sufficient battery charge, but when the key is turned to the “engine start” position, the starter, instead of a couple of revolutions, continues to hum, rotating the crankshaft, but the engine does not start.

The reasons for this problem lie in malfunctions of one or more vehicle systems responsible for the normal operation of the engine.

Fuel system

Tank. The fuel level in the tank is measured by a special sensor equipped with a float. If this mechanism malfunctions, the arrow on the dashboard may indicate the presence of fuel when the tank is completely “dry” - the engine cannot be started without fuel.

Pump. Depending on the type of engine and the fuel consumed, the pump can be located in the tank or in the area of ​​the engine group. Designers of injection engines equip their products with an electric pump, the operation of which can be heard in the cab when you turn the key. Carburetor engines supply fuel to mechanical pumps that operate from a central shaft drive. The reasons why the device does not supply fuel may be wear of the electric motor brushes and other parts. Failure to start a diesel engine can also occur as a result of airing of the high pressure fuel pump or a malfunction of the silencing valve.

Fuel filter. After several unsuccessful attempts to start the engine, it is worth checking the condition of the fuel filter. This component does not allow water, dirt and other foreign matter to enter the engine. Failure to replace the filter in a timely manner leads to its complete clogging and blockage of fuel.

Injectors and throttle valve. In gasoline engines, fuel is mixed with air and enters the combustion chambers as a finished mixture. The intensity of the air supply is controlled by the throttle valve, which is driven by a mechanical drive or electric motor. A malfunction of the damper may cause the engine to fail to start. To supply diesel fuel to a group of cylinders, nozzles are used - complex and expensive mechanisms designed to pass strictly dosed portions of diesel fuel into the cylinders. Untimely maintenance of the vehicle and the use of low-quality fuel lead to clogging and failure of the injectors, as well as problems with starting the engine.

Ignition system and electronics

The components of the internal combustion engine ignition system include: battery, high-voltage wires, ignition coil, spark plugs. Also in modern cars, an important component of the ignition system is the electronic control unit (ECU), which receives signals from various sensors built into the engine and controls the operation of the vehicle systems.

Failure to start the engine can be caused by: low battery charge, breakdown of high-voltage lines, faulty ignition coil, spark plugs.

Useful tips

Additionally, experts advise turning your attention, when all other options have already been excluded, to the timing belt - when replacing it, the technicians could have set the phases incorrectly.

In addition, a banal belt break or excessive rotation is likely.

Very exceptional situations include a skewed cylinder head (for example, due to overheating), impaired compression in the cylinders and misaligned rings.

Gasoline for VAZ 2114

One should not discount such a banal reason as low-quality fuel: in places far from cities, where there is nothing to choose from, cunning entrepreneurs can pour in a completely indecent mixture.

The engine will not start immediately from such gasoline, which will serve as an additional diagnostic sign, and there can only be one solution - drain the low-quality fuel and fill it with normal gasoline. In such situations, however, there is nowhere to take it from, so you will have to rely on a tow truck or compassionate motorists who will stop to help.

If the starter turns, but the car engine does not start

In this case, first of all you need to check whether there is a spark. You can do this as follows:

You should try to “turn” the starter - if after this a bright blue spark jumps between the central and side electrodes, then there are no problems. If there is no spark or is red, then the spark plug will need to be replaced. Even if out of 4 only one spark plug does not work well, the car will no longer start the first time.