Why is the VAZ 2114 8-valve injector difficult to start?
For some reason, it seems that many drivers of this model will be interested in the question of why the VAZ 2114 injector with 8 valves does not start well. Finding the cause of this phenomenon is not as easy as it might seem at first. This is due to some difficulties when troubleshooting this model, since the injection systems differ from carburetor systems. The algorithm for identifying possible problems will be constructed differently, taking into account the design features of the machine.
Why does the VAZ 2114 injector start 8 valves poorly?
, we will try to consider in this article. In a short article it is impossible to consider absolutely all possible problems; there are some that can only be detected with the help of diagnostic equipment. But, nevertheless, we will try to analyze as many such situations as possible in order to help all VAZ 2114 owners decide what to do in such a situation.
Ignition module
One more problem. ignition module. This malfunction was more common in cars of the Samara-1 generation. In the case of Samara-2, the quality of the part itself has improved, but the root of the problem remains. The module is attached to the cylinder block, so it heats up and the windings burn out. As a result, a hot spark can lose one, several or all cylinders at once.
If the unit does not start hot, check for spark. If not, then this is almost certainly a problem. Usually the problem can be resolved by replacing the module, but if the problem persists, try moving the bracket to a different location. Most often it is installed in front of the engine compartment, near the radiator.
These methods solve most problems with poor starting of a hot engine. But less probable ones are also possible: broken wiring, ECU malfunction, etc.
General faults
It is necessary to distinguish between situations when the car simply cannot start, and when the VAZ 2114 does not start when it is hot. In the first case, the reasons may not be related specifically to a warm engine.
The most common faults include:
- The battery is low - the charge level is not enough to start the car again.
- Problems with the starter - its speed drops, or the relay needs to be changed.
- Poor quality fuel - as a result of using gasoline with impurities, fuel system valves or injectors may become clogged.
Important! If black or white residue accumulates on the spark plugs, there may be problems with the ignition system, fuel system filters, or fuel pump. Therefore, when a plaque is detected, the car needs diagnostics.
Another common reason that the engine does not start, either hot or cold, is problems with the ignition module. This is due to a design solution - the ignition system module is attached to the car’s cylinder block. If the windings get too hot, they may burn out. As a result, the spark does not reach one or several cylinders at once.
To check the serviceability of the VAZ 2114 ignition system, you need to:
- Check the sparks on the spark plugs - the absence of a spark on several spark plugs at once can cause problems with starting the engine, and indicates a problem with the operation of the module.
- Inspect the high-voltage wires - if there is no spark on one spark plug, this indicates a possible wire break. Therefore, it is necessary to inspect the wires for mechanical damage.
Impact of sensors
Most VAZ-2115 cars have been running on the controller since January 5th. When the engine starts, the crankshaft, temperature and throttle sensors are activated.
DPKV malfunctions usually occur regardless of temperature, but it is worth checking its resistance and comparing it with the data in the calibration table.
More common malfunction. diesel fuel. Remove from place, place in a container with a cooler. We measure the resistance with a multimeter: it should be within 1350. 1880 Ohms. If you have a thermometer, check the table. If not, then it doesn’t matter either, we’ll just heat it to any temperature. As T increases, the resistance decreases. On a fully warmed up engine it is 87.109 Ohms. If the ohms do not change or drop to 0. change the diesel engine.
The throttle assembly is completely disassembled and cleaned. One of the problems. dirt, which expands when heated and interferes with the normal operation of the injection. If the TPS malfunctions, the car not only does not start when hot, but also “does not drive” (sometimes stops and does not start) after warming up.
TPS is checked with an ohmmeter with the engine running. Place a multimeter on the input and output contacts, ask an assistant to press the gas. The readings should change, and at XX they will return to the original ones. If the resistance does not change when you press the pedal or the device shows infinity, the sensor is ready for replacement. At the same time, we check the MAC. This usually causes the car to idle rough or stall but start.
A malfunction of the mass air flow sensor on cars since January 5 is recognized by the fact that the car starts hot and immediately stops. The sensor only works after startup. But on the car, since January 7, the mass air flow sensor has been involved in the start-up. Without it the car will not start.
The timing marks on the VAZ are not set correctly
Another reason why the VAZ 2114 does not start may be a discrepancy between the inscriptions (timings) of the gas distribution mechanism. The reason for the discrepancy between the marks may be weak timing belt tension, cut teeth, or the crooked hands of a mechanic at a service station.
A discrepancy of more than two teeth will significantly affect the performance of the fourteenth engine. With a slight deviation, the engine starts a little harder, does not idle, and stops when switching to neutral. If the deviation exceeds 4-5 teeth, the sound of the engine changes, air escaping under pressure through untimely open valves becomes audible, traction is significantly lost, and starting the engine is extremely problematic.
- To check, we need a “10” wrench, which we use to unscrew the three bolts of the timing case.
- Next, put the car in 5th gear and push until the mark on the camshaft pulley and the rear cover coincide, you can also turn the pulley with a key to “17”
- Remove the protective cap from the clutch housing and make sure that the mark on the flywheel corresponds to the mark; if not, you need to loosen the tension roller and install the belt according to the marks.
VAZ 2114 takes a long time to start when cold. The car takes a long time to start when cold and when stopped
Why is the VAZ 2114 8-valve injector difficult to start?
For some reason, it seems that many drivers of this model will be interested in the question of why the VAZ 2114 8-valve injector 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.
Why is the VAZ 2114 8-valve injector difficult to start?
, we will try to consider in this work. In a short article it is impossible to consider absolutely all possible problems; there are some that can only be identified with the help of diagnostic equipment. But, nevertheless, we will try to analyze as many such situations as possible in order to help all VAZ 2114 owners decide what to do in such a situation.
Why might the engine be difficult to start?
You can look for the culprit in such a situation in several directions. Among them, the most important problems are:
- Malfunctions in the ignition of a VAZ 2114 car
- There is no pressure in the fuel rail of the 8-cl VAZ engine
- Air leak into the VAZ intake manifold
- Timing belt marks are misaligned
Engine diagnostics using spark plugs
Let's look at the first option, why the VAZ 2114 doesn't start well. To do this, unscrew the candles and look at their color. If there is black dry carbon on the candles, we can say that the engine has been running for a long time on a rich mixture, which covers the candles with black carbon.
Why does black carbon appear on the spark plugs of an injection car:
- Malfunction of the mass air flow sensor
- The first oxygen sensor has failed
- Fuel pressure regulator is faulty
- Malfunction of fuel injectors
White carbon deposits on the spark plugs of an injection car appear due to a lean mixture, the reasons for the appearance:
- Everything is the same as with black soot
- Malfunction of the fuel pump or clogged fuel filter (check the mesh and fine filter)
- Air leaks through the air flow sensor pipe, the place where the regulator is attached to the XX joints of the manifold.
Checking the spark plug spark
The lack of a spark on one 8-cl spark plug of a VAZ engine will not affect the engine starting, it will be noticeable when idling, tripping and jumping revs. But if the ignition module of the VAZ 2114 is faulty, then the spark disappears in two cylinders 1-4 or 2-3. To check the spark plug spark, take out the fuel pump fuse, unscrew one spark plug or take a spare one, remove the high-voltage wires one by one, put them on the spark plug, then put the whole thing on ground (in this case, the valve cover) and ask a friend to crank the engine with the starter, so we check each spark plug. If there is no spark on one spark plug, most likely there is a defect in the explosive wires; if there is a spark in two or all spark plugs, it is highly likely that the problem is in the ignition module or the wiring to it.
The timing marks on the VAZ are not set correctly
Another reason why the VAZ 2114 does not start may be a mismatch of the timing marks. The reason for the mismatch of the marks may be weak timing belt tension, cut teeth, or the crooked hands of a mechanic at a service station.
A discrepancy of more than two teeth will noticeably affect the operation of the engine of the fourteenth. With a slight deviation, the engine starts up a little worse, does not hold idle, and stalls when switching to neutral gear. If the deviation exceeds 4-5 teeth, the sound of the engine changes, air escaping under pressure through the valves that are not opened in time becomes audible, thrust noticeably disappears, and starting the engine is extremely problematic.
- To check, we need a “10” key; use it to unscrew the three bolts securing the timing case.
- Next, put the car in 5th gear and push it until the mark on the camshaft pulley and the rear cover match, you can also turn the pulley with the key to “17”
- We remove the protective plug from the clutch housing and see if the mark on the flywheel matches the mark; if not, then you need to loosen the tension roller and align the belt according to the marks.
Checking the crankshaft sensor VAZ 2114
Perhaps this is the only sensor without which a VAZ car will not be able to start at all. If, when the engine is cranked with the starter and the ignition and fuel supply are working properly, there is no seizure or ignition of the fuel, then the problem is in the DPKV. The cost of the sensor does not exceed 300 rubles; it is better to replace it. However, there is a way to check: checking the crankshaft sensor video
If after the performed operations it was not possible to determine the breakdown, please write your problem in the comments, I will be happy to answer your question!
Poor starting on a hot VAZ 2114
The VAZ 2115 starts ideally in the cold and when starting hot. stops immediately. After cooling it starts without problems. What could be the reason?
Bad hot
launch. one of the diseases of VAZ cars. Therefore, the question is very common. This is due to the low quality of spare parts and some design features. It happens that the fuel pump is replaced with a new one, but it turns out to be faulty. In "troubleshooting" things change and the problem is discovered in the second round.
If the device does not start hot, we recommend checking the following algorithm:
READ How to Check the Head Gasket of a VAZ 2114
The rest of the information is for the remaining 20% (diagnostics does not reveal problems) and those who do not have qualified specialists in the access area.
26 comments on “The VAZ 2114 car does not start when hot, but when driving everything is fine”
Ignition module! Try shooting it hot and cool.
I also had the same bullshit that the tags got confused over time
Look at the crankshaft sensor
Possibly the ignition switch.
try putting a cold cloth on it
So the fuel pressure
The sleeve (copper) in the bell is already broken and the starter stupidly bites (when it’s hot ). This is only if everything is fine in the cold.
Antokha, it’s okay to start cold
Are the injectors clogged? try draining the fuel from the ramp and get to work
Measure the pressure in km, see Conditions
Miras, this is your 100% addiction. This happened to four last summer. Until it cools down a bit, does it start correctly? If you change it, it costs about 500 rubles. This is the reason
.
I had the same thing, only the reason was the fuel pump, I replaced it and everything is fine
Pennies are glued to the retractor, removed and cleaned, or a new retractor!
Andrey, that’s right, what kind of picture can I send?
Miras, here it is, I couldn’t take it off. There seems to be no way out without removing the starter itself. I poked for an hour and a half, went to work
Here with the starting ipos... First of all, understand, look, you shouldn’t change everything because of this.
what kind of starter do you have starter speed
the fuel pump does not create the required pressure, it seems to be checking
Crankshaft sensor see
Battery. It was exactly the same bullshit. I spent 2 months looking for the problem, they replaced everything, but it turned out to be the battery. I changed the battery and everything is fine
Where does a child's stimulating brain come from? The starter turns the engine, you can hear it perfectly
It's a shame that girls are smarter than boys. But aren't you ashamed?
see tags. the belt sound disappeared
Look at the sensor on the thermostat, this is the temperature, but it is also responsible for the rich and lean mixture of fuel, I suffered for a long time and for the first time changed 3 pieces (enough of the defects), I thought I could grab it from the sound, this is the sensor. if the belt fell, the sound would be different, because some valves are open, the starter would spin more easily, as if there were no compression. To check, try removing the chip from the sensor while it is hot and turn on the starter longer, it will start.
Too rich or lean mixture - air flow sensor
We mentioned above that problems with starting the car can arise due to a malfunction of the mass air flow sensor. mass air flow sensor. This element of the car is one of the most vulnerable to the environment, which is why they often talk about its breakdown. If it is very difficult to start the engine when hot, check the operation of this mechanism. This failure may also be accompanied by the following factors:
The fuel mixture of gasoline and air must have a certain consistency, which is formed by the mass air flow sensors and several other parts of your vehicle's electrical and electronic system. If these defects are faulty, you will have to change them and test the car, get the new equipment working.
The VAZ 2114 car does not start when hot, but when driving everything is fine
The VAZ 2114 car does not start when hot, but when driving everything is fine. And so you can start it with a push. Who knows where to dig. The spark plugs were also replaced with wires. I have a video on my page, check it out.
26 comments on “The VAZ 2114 car does not start when hot, but when driving everything is fine”
Ignition module! Try removing it while it's hot and cooling it down.
I also had the same bullshit, the timing marks were knocked off
Check the crankshaft sensor
Possibly the ignition switch.
try putting a cold rag on it
Engine, fuel pressure
The bushing (copper) in the bell box is already broken and the starter (when hot) stupidly bites. This is only if everything is fine when cold.
Antokha, it’s normal to start when cold
Are the injectors not overfilling? try to drain the fuel from the ramp and start
Measure the compression and check the timing belt
Miras, you are 100% retractable. Last summer the same thing happened at 4. It won't start until it cools down a bit, right? If you change it, it costs around 500 rubles. This is the reason.
I had the same thing, only the reason was the fuel pump, I replaced it and everything became fine
The coins in the retractor get stuck, remove and clean or a new retractor!
Andrey, that’s right, what is this, can you send a photo?
Miras, here it is, I couldn’t take it off myself. There seems to be no way out without removing the starter itself. I tinkered with it for about an hour and a half and took it to the service center.
Here with the starter it’s... First, take it apart, look, you shouldn’t change everything because of this.
what kind of starter are you talking about? the starter turns
The fuel pump does not create the required pressure, it looks like check it
See crankshaft sensor
Akum. It was exactly the same bullshit. I spent 2 months looking for the problem, replaced everything, but it turned out to be the battery. changed the battery and everything is great
What does this have to do with the drawback, why are you hammering the kid’s brains. The starter turns the engine, you can hear it perfectly
disgraces, the girl is smarter than the boys. Not a shame, huh?
see tags. the sound of the belt came off
Look at the sensor that is located on the thermostat, it is temperature, but it is also responsible for the rich and lean mixture of fuel, I suffered for a long time, and changed 3 pieces (there are enough defects) by the sound, the first time it seemed to grab, this is exactly the same sensor. if the belt had come off, the sound would have been different, because... some valves are open, the starter would turn more easily, as if there was no pressure. For the sake of testing, try to remove the chip from that sensor while it’s hot and turn the starter longer, it will start.
Why is the VAZ 2114 8-valve injector difficult to start? You are not alone
Bad fuel or presence of additives in the fuel mixture
Gasoline or diesel fuel is of poor quality. one of the most common variants of this problem. But in this case, you can conduct an experiment that will show the real problem of your car. The fact is that low-quality fuel with a poor hot start will have an even more unpleasant effect when starting the engine in the cold. Therefore, it is enough to cool the car, wait until the engine returns to normal, and start it. In addition, the following fuel problems may occur:
) can cause the following problems;
In the case of carburetor units, everything is quite simple. The engine itself starts very poorly when hot. This is due to the fact that after stopping a car with a hot engine, the temperature in the carburetor area is quite high. Gasoline quickly evaporates under the influence of temperature and fills all chambers and tubes of the carburetor in a gaseous state. But the float chamber remains empty. If you decide to start the engine within five minutes of stopping it, you will have difficulty starting it because there is no liquid fuel in the chambers. Problems are solved by manual pumping or several attempts to start the power unit. However, there cannot be such a problem with injectors, because the fuel is supplied directly from the line. Therefore, it is worth looking for other faults in the fuel supply system.
The starter turns, but the car does not start
This is the most common situation if the passage is from a VAZ 2114. The procedure for solving it must begin with answering the question of whether there is a spark. To do this, take an assistant, unscrew one spark plug, put an armor wire on it and very carefully (avoid touching live parts, hold the insulated part of the wire) apply the spark plug to the cylinder head cover. While the assistant turns the engine, watch the behavior of the spark plug. If there is no spark, you need to look for it.
If there's no spark
The ignition module is one of the key problems of the VAZ 2114 on the injector. It breaks often and sometimes a new one comes with a defect. You can read more about checking the ignition module in other material on our website
Please note that the problem may also lie in the chip that is connected to the module. The presence of power on it must also be checked. DPKV is another reason why there may be no spark
Since this sensor monitors the firing phases of the cylinders, it is one of the key elements of the ignition system. Note that the probability of its failure is lower than that of the ignition module. It is checked by an electrician using an oscilloscope; garage methods do not provide an accurate assessment of the sensor’s condition (only replacement with a guaranteed working one)
DPCV is another reason why there may be no spark. Since this sensor monitors the firing phases of the cylinders, it is one of the key elements of the ignition system. Note that the probability of its failure is lower than that of the ignition module. It is checked by an electrician using an oscilloscope; garage methods do not provide an accurate assessment of the condition of the sensor (only replacement with a guaranteed working one).
KEY-DOP
ECU. “January” is a relatively reliable injector, but the “brains” can also malfunction from time to time. Often the problem with them is identified by a violation of the injection phases: for example, a spark is supplied only to cylinders 2 and 4, or only to cylinders 1 and 3. Sometimes the issue can be resolved by simply cleaning the contacts on the ECU chip; it is also subject to oxidation, which causes signal loss.
If there's a spark
Not often, but this problem does happen. By all indications, the car should start (gasoline splashes into the ramp, the starter turns, there is a spark), but the engine does not catch. There are also pitfalls here.
Injectors. In most cases, the problem is in them, it’s worth taking the car for diagnostics and cleaning it with ultrasound
If trouble strikes you on the road, pay attention to the candles. If the injector supplies the mixture, they must be filled with gasoline; if the spark plugs are dry, the probability of an injector malfunction is high. However, keep in mind that injectors rarely fail suddenly and all at once
As a rule, before the car stops starting, the engine should be running
However, keep in mind that injectors rarely fail suddenly and all at once. As a rule, the engine should start running before the car stops starting.
Poor quality gasoline. It is assumed that a serviceable engine should start almost on water, unless it’s bad
work. In reality this is nonsense. There are enough examples of “dead” engines after refueling (both at “Uncle Ashot” and at completely official gas stations of well-known brands). Keep this in mind. If the car stops gripping immediately or a short time after refueling, you should not discount this option. The solution is to drain the gasoline and add another.
The VAZ 2115 does not start well when hot.
Lack of required pressure in the ramp. Here we return to problems with the fuel system. Perhaps the problem is the pump or problems with the TPS (unlikely). If you have January 7.2, the cause may be a malfunction of the mass air flow sensor. Unlike January 5.1, here this sensor is polled at startup and, if there is an error, the ECU may prevent the engine from starting.
Finally, we note that the reasons for non-starting in the presence of gasoline and spark may include the following:
- the phases are incorrectly set when replacing the timing belt, as well as its breakage or rotation - it’s worth checking;
- due to overheating, the cylinder head “started”;
- uneven compression in the cylinders, “stacking” of the rings.
Why is the VAZ 2114 8-valve injector difficult to start? You are not alone
For some reason, it seems that many drivers of this model will be interested in the question of why it’s bad
The VAZ 2114 injector with 8 valves starts. Finding the cause of this phenomenon is not as easy as it might seem at first. This is due to some difficulties when troubleshooting this model, since the injection systems differ from carburetor systems. The algorithm for identifying possible problems will be constructed differently, taking into account the design features of the machine.
READ Volkswagen Passat B5 Heater Does Not Heat Poorly
We will try to look at why the VAZ 2114 does not start well with an 8-valve injector in this article. In a short article it is impossible to consider absolutely all possible problems; there are some that can only be detected with the help of diagnostic equipment. But, nevertheless, we will try to analyze as many such situations as possible in order to help all VAZ 2114 owners decide what to do in such a situation.
Fuel supply problems
In injection engines, the fuel supply system is slightly different from the system installed on carburetors. Gasoline is supplied from an electric pump with a built-in filter. The filter is not changed on time, there is insufficient fuel supply, which means there will be difficulties with starting and normal operation of the engine. It also wouldn’t hurt to check the fuel pressure in the line and the operation of the injectors.
Engine starting problems in injection systems can also occur due to a malfunction of the fuel pressure regulator. It is impossible to exclude such a trivial problem as an air leak in the power system; it makes it very difficult to start a cold engine. Pay attention to the fuel poured into the tank; its quality also greatly affects engine starting.
About malfunctions in electrical equipment
What could be the problem with this system if the engine starts poorly? There are also two areas: poor starter performance and faults in the ignition system. If the engine crankshaft is not given a certain speed, it will be very difficult to start. This can happen when the battery is discharged or when the starter itself fails.
This may be wear of the brushes, “breakage” of the starter bushings, loss of contact with the working winding, and others. While any driver can charge the battery, not everyone can handle the starter. This test requires a multimeter and experience with electrical equipment. Therefore, it is better to contact a specialist.
Starting a vehicle with a faulty ignition system can take a long time. The culprit may be spark plugs, a high voltage coil, or an electronic unit that sends impulses to the coil. Inspection and maintenance of spark plugs are available to owners, as is diagnostics of the high-voltage coil, but electronics require knowledge and special equipment.
Why might the engine be difficult to start?
There are several ways to find the culprit in such a situation. Among them, the most important are the following problems:
Readers that do not start at all and do not start properly have several common causes of malfunctions that need to be configured immediately. Today the emphasis will be on a poorly started engine. Let's talk about this in more detail.
- Why might the engine have difficulty starting?
- About electrical faults
- Fuel supply problems
- What else affects engine starting?
What else affects engine starting?
The smart hardware of this model, which requires a lot of effort to start the engine, may also be to blame. Let's try to figure this out. One of the “problems” may be the crankshaft position sensor. The controller controls the injectors and ignition system using its own signals. Malfunctions of this device prevent normal startup.
Another similar source of difficulty. the most expensive of the sensors. mass air flow . According to his testimony, the control unit creates an air-fuel mixture. This is easy to check; just turn off and check the engine. If the problem goes away, the sensor needs to be replaced.
Carburetor engines have difficulty starting due to clogged carburetor jets (try bleeding). It is known that the injector does not have a carburetor, but the throttle body can create similar problems. This is especially true for engines with high mileage. Flushing with carburetor cleaning fluid solves these problems.
The temperature sensor informs the on-board computer about the condition of the coolant. If in carburetor engines it does not affect engine starting, then in our case its performance is 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 warm engine will be very difficult.
To more accurately identify faults, specialists use special equipment that accurately identifies the faulty unit. It has been said about why the 8-valve injector of the VAZ 2114 does not start well, but at the end I want to give one more piece of advice. Look under the hood of your car often. This will allow you to notice poor connections, air leaks, and other minor problems and save you from unnecessary worries.
The first problem is that the starter turns, but does not engage
Let's consider the following situation when the VAZ-2114 does not start, but the starter continues to turn. You should also take into account the nuance that the starter still does not engage. The mechanism of the problem is as follows:
- the key is inserted into the ignition;
- the fuel pump pumped up the fuel mixture;
- during the ignition startup process, the starter turns in idle mode (experts call this process “the starter does not catch”).
Experienced motorists note that a similar situation occurs in VAZs with high mileage, so we can talk about wear of either the starter itself or its parts. So, most often the overrunning clutch or “Bendix” suffers; the main element here is the gear. It is this overrunning clutch gear that causes a lot of trouble, because its teeth are often subject to wear. The mechanism of the malfunction appears as follows:
- the driver turns the key;
- the starter starts to spin;
- The overrunning clutch gear cannot engage the engine due to tooth wear.
In this case, there is only one way out - replacing the bendix. You can actually carry out this procedure yourself at home, or you can seek help from qualified specialists at a service center.
Even in the starter, its gearbox may fail. This problem is less common than the previous one. This gearbox includes several types of gears, which are also subject to wear due to the long life of the vehicle. There are five gears in total:
- one small;
- three satellite gears;
- one large one, attached directly to the gearbox housing and engaged with the satellites.
Reasons why the injection VAZ 2114 does not start
The design of any modern VAZ 2114 car is no exception, so a successful automobile plant depends on a number of positions. Previously, it was enough for a mechanical pump to supply fuel to the carburetor and spark plugs to have a spark. Today, there are a lot of problems that prevent the engine from starting. The electronic injector requires the participation of several sensors, and they are not limited. In this article we will tell you why the “four” does not start and how to deal with it. In general, all reasons for refusal can be divided into two large categories:
Doesn't start and stalls when starting a hot VAZ 2115
On a VAZ 2115, it starts perfectly when cold, but when starting hot, it immediately stalls. After it cools down, it starts without problems. What could be the reason?
Poor hot starting is one of the diseases of VAZ cars. Therefore, the question is very common. This happens due to the low quality of spare parts and some design features. It happens that the fuel pump is replaced with a new one, but it turns out to be faulty. “In search of a malfunction” everything is changed, and the problem is revealed already on the second round.
If the car does not start when hot, we recommend checking using the following algorithm:
- Point for beginners. Make sure that the problem is related to the “hot” state of the car. Check the battery charge, make sure that the generator is charging (with a multimeter in voltmeter mode). Are there any problems with the starter? If it sometimes turns, sometimes it doesn’t, or occasionally turns poorly, take it to an electrician.
- For everyone else. It is advisable to start repairs with diagnostics - it can help save money. A diagnostician will reveal approximately 80% of the causes of the problem, the faulty part will be replaced, and the car will drive and make you happy.
The rest of the information is for the remaining 20% (diagnostics does not reveal problems) and those who do not have qualified specialists in the access area.
Electrical faults
This is where most of the problems lie, so let’s look at each option in detail:
Nothing happens when I turn the key
At VAZ 2114
usually indicates a problem with the ignition switch. starter wire, but one of the reasons for failure is “for blondes”. battery, don’t forget about it (checked with a voltmeter: it should be at least 11.8 V. and a hydrometer, if the battery is being serviced: at least 1.22 in each bank).
Let's move on. The cause of this malfunction may be a breakdown of the ignition lock cylinder, and the injector has nothing to do with it. If, when turning the key, new sensations appear (something clings, it has become easier to turn or, conversely, more difficult), then this.
Under the panel, approximately above the clutch, there are two relays: an unloading ignition switch and a starter. The cause may be a malfunction of one of them. Checked in the manual of a good electrician or replaced by a reputable worker.
READ Where is the Fog Light Relay for VAZ 2114
Starter. Often the cause may be a jammed “retractor”. If you're standing in a field, try hitting him with something heavy, like a large wrench (without fanaticism). this can help. If the car is parked in a garage, you should remove the starter and try to start it directly from the battery.
To do this, press the housing to the zero terminal of the battery, install a wire with an alligator clip on the positive terminal of the battery and connect it to the positive terminal of the retractor. If the starter tries to jump out of control. everything is fine (be careful, this procedure is not recommended without basic safety knowledge and an assistant!).
If there is no reaction, the problem is in the retractor. If the relay buzzes but the starter does not turn, the problem is in the brushes. If the starter makes a terrible sound but does not return, the problem is in the bendix.
If the starter returns, replace the battery and check the power supply to the microcircuits connected to the starter (with the help of an assistant, one turns the key, the other measures with a multimeter).
VAZ 2110 does not start when hot cause of breakdown
2110 does not start when hot
, one of the reasons for the breakdown, here is the video!! For the development of the channel.
Starter. Often the cause is a jammed “retractor”. If you are standing in a field, you should try hitting it with something heavy like a large key (without fanaticism) - it helps. If the car is parked in a garage, you should remove the starter and try to start it directly from the battery.
For this purpose, press the housing to the zero terminal of the battery, install the wire with the alligator clip on the positive terminal of the battery and bring it to the positive of the retractor. If the starter makes an attempt to jump out of his hands, what can our client do normally (be careful, this procedure is not recommended without basic safety knowledge and an assistant!).
Fuel system problems
The following factors influence engine starting from the elements of the fuel system:
This category also includes electrical components that are directly related to the fuel supply. This is an electric fuel pump and fuel pump relay.
Before checking with other methods, you must be absolutely sure that the VAZ 2114 with an injector is filled. “Yes, another five liters” on a retracted indicator or “I filled it up yesterday, I couldn’t spend so much” is inappropriate. It may be lying around clean, but there may be leaks in the tank or fuel lines. Carefully check the car for fuel leaks; just in case, fill in 5-7 liters of gasoline from a canister.
It's rare for the tank screen to become clogged, leave this option for last, but the fine filter should be replaced if the electrical problems are resolved.
The operation of the fuel pump is checked by ear (after turning the key you should hear it working, if not, then the pump is “dead”, either the pump relay or a broken wire). According to the instructions, you need to connect the pressure gauge to the fuel system. If the pressure is not maintained within 2-2.5 atm, the VAZ 2114 does not compress due to insufficient fuel pressure.
The starter turns, but the car does not start
This is the most common situation in the case of the VAZ 2114. The procedure for solving it should begin with answering the question of whether there is a spark. To do this, take an assistant, unscrew one spark plug, put an armor wire on it and very carefully (without touching the live parts, hold on to the insulated part of the wire) attach the spark plug to the cylinder head cover. While your assistant is cranking the engine, observe the behavior of the spark plug. If there is no spark, you need to look for it.
If there's no spark
Ignition module. one of the key problems of the VAZ 2114 is the injector. He often breaks down and sometimes a new one comes with marriage. You can read more about checking the ignition module in another article on our website. Please note that the problem may also be in the chip that is connected to the module. You should also check the power supply on it.
DPKV. another reason
, which may not produce a spark. Since this sensor monitors cylinder phases, it is one of the key elements of the ignition system. Please note that the probability of its failure is lower than that of the ignition module. This is checked by an electrician using an oscilloscope; garage methods do not provide an accurate assessment of the condition of the sensor (only replacement with a guaranteed good one).
EBU. "January". a relatively reliable injector, but the “brain” can also fail from time to time. Often the problem with them is recognized by a violation of the injection phases: for example, a spark is supplied only to cylinders 2 and 4 or only to cylinders 1 and 3. Sometimes the problem is solved by simply cleaning the contacts on the computer. chip, it oxidizes.
If there's a spark
Not often, but there is such a problem. By all indications, the car should start (gasoline splashes into the ramp, the starter spins, there is a spark), but the engine does not rise. There are also pitfalls.
Injectors. In most cases, they are the problem; you should take the car for diagnostics and clean it with ultrasound. If trouble hits the road, pay attention to the candles. If the injector supplies the mixture, they must be in gasoline; if the spark plugs are dry, there is a high probability of injector failure. However, keep in mind that injectors rarely fail suddenly and immediately. Generally, the engine needs to triple in size before the car will no longer start.
Low quality gasoline. It is assumed that a serviceable engine should start practically on water, perhaps poorly
working. This is really nonsense. There are enough examples of “dead” engines after refueling (both at “Uncle Ashot” and at completely official gas stations of all well-known brands). Remember. If the machine stops gripping immediately or shortly after refueling, do not reduce this setting. Exit. drain the gasoline and add more.
Lack of necessary pressure on the rails. This brings us back to fuel system problems. Maybe it's the pump or problems with the traffic police (unlikely). If you have a January 7, the cause may be a faulty mass air flow sensor. Unlike January 5.1, here this sensor is checked at startup, and if an error occurs, the ECU may prevent the engine from starting.
Finally, please note that reasons for failure to disembark in the presence of gasoline and sparks may include:
Nezavodsky VAZ 2114 is a common situation, and there are many reasons for this. Therefore, it is worth approaching this issue in full force.
Sources:
https://autoflit.ru/1614-pochemu-ploho-zavoditsya-vaz-2114-inzhektor-8-klapanov-vy-ne-odinoki.html https://nadomkrat.ru/ustroistvo-avtomobiley/dvigatel/ne-zavoditsya -vaz-2114
Fuel system vulnerabilities
The fourteenth VAZ model has an injection engine. Regardless of whether it is equipped with an 8 or 16 valve system, the reasons that the VAZ 2114 does not start when hot may be related to the fuel supply:
- too low pressure in the fuel pump - this problem is caused by malfunctions of the pressure regulator on the fuel rail. The pressure in the pump should not exceed 3.2 bar at power modes, but should not fall below 2 bar. The fuel pump may also stop working due to overheating, for example, in hot weather;
Gasoline pump VAZ 2114 - problems with the operation of the bypass valve - when the pressure drops, it begins to “let in” excess fuel;
- The injectors “do not hold” - they continue to let droplets of fuel through when the engine is turned off. In this case, it is recommended to check the pressure level with a pressure gauge approximately 15 minutes after turning off the engine, and start it only if the pressure has dropped (the injectors have leaked fuel). The injectors need to be washed, and if this does not help, replace them.
