One of the most common reasons causing the inability to start a gasoline engine is the banal lack of spark at the spark plugs. Under such circumstances, there is nothing to ignite the combustible mixture on the compression stroke, and as a result, the engine refuses to work. Depending on what kind of power system the car is equipped with, it is determined exactly how to proceed to determine the exact cause of the lack of a spark and measures to return it. We’ll talk in more detail about this problem on injection engines today. Interesting? Then be sure to read the material below to the end.
Checking for spark
Let's say your fuel-injected car has stopped responding to the ignition key and refuses to start. It is quite irrational to immediately complain about a malfunction in the ignition system. First of all, you need to make sure that it is the spark that has disappeared and not something else that has broken. To check spark plugs for the presence of the coveted “light”, you can resort to several procedures at once. Perhaps the most effective and simple ones are the following:
- The first method is a mass test. To implement it, you need to turn off the ignition, unscrew each spark plug in turn and, placing its body against ground (the metal body of the engine), try to start the engine;
- The second method is checking with a multimeter or a tester based on a piezoelectric element. This diagnostic option is quite similar to the method described above, except that the spark plug is applied not to ground, but to the contacts of the tester or multimeter. However, in this case there is no need to “turn” the starter; the spark must come from the devices themselves.
If, as a result of the above-mentioned testing methods, sparking on the spark plug is not detected, or there is a spark, but weak (dimmed, dim, dull), it is necessary to identify the cause of the malfunction. Do not forget that operating a car with a poorly functioning ignition negatively affects engine performance and significantly reduces its service life.
Note! Checking the spark on the injector is an extremely important undertaking, since such cars have very sensitive electronics. Considering this particular feature, it is important to carry out diagnostics carefully and as quickly as possible, that is, without numerous repetitions of the test and using only high-quality testers.
No spark, VAZ injector
Using the 2111 injection engine of VAZ 21083, 21093, 21099 cars as an example, we will understand the causes of the “no spark, injector” malfunction.
Symptoms of a “no spark, injector” malfunction
There are only three signs of a “no spark, injector” malfunction in relation to the ignition system of the 2111 engine.
— The car engine does not start
— The car engine starts and stalls
— The engine “troits” or “doubles” at idle
Causes of the malfunction “no spark, VAZ injector”
— Spark plugs are faulty
Black deposits on the electrodes of the spark plug allow the spark to travel along it to ground.
In rare cases, all spark plugs may fail at once. But most often one or two of them fail. The engine begins to run unsteadily at idle. The cause of spark plug malfunction is a breakdown of the insulator to ground (the spark goes not to the spark plug electrodes, but to the engine), carbon deposits on the electrodes due to the engine running on a rich fuel mixture, a malfunction of the spark plug itself (does not pass current), etc. See "Spark plug malfunctions" and "Checking the spark plugs of an injection engine."
In addition, the reasons for the disappearance of the spark on the spark plugs may be faulty high-voltage wires and the ignition module.
— The ignition module (“coil”) is faulty
The ignition system of the 2111 engine uses an ignition module consisting of four coils. Most often, two of them fail, and the engine, at best, begins to “doubly” - only two cylinders work, but most likely it will not start at all. Under certain conditions, difficult starting and ghosting of a cold engine may occur; when the engine is warm, the problems disappear.
Checking the module (ignition coil) VAZ 21083, 21093, 21099
You can check the ignition module yourself “Checking the ignition module of VAZ 21083, 21093, 21099, injector”.
And in case of malfunction, replace it.
— High-voltage wires are faulty
Checking high-voltage wires using a multimeter (in ohmmeter mode)
High-voltage wires are designed to conduct high-voltage current from the ignition module to the spark plugs (the so-called high-voltage circuit). If a “break” occurs in this circuit, then there can be no talk of any spark. The cause of the “break” may be burnout of the central core of the armored wire, oxidation, or burnout of the contacts (tips). Or a violation of the integrity of the wire insulator (“breakdown”) due to which the spark goes to the “ground” and not to the spark plug.
The signs of malfunction of high-voltage wires are the same as those of spark plugs (“triples”, “doubles”, does not start, stalls).
You can check the high-voltage wires yourself. “Checking high-voltage wires of VAZ 2108, 2109, 21099.”
— The ECM crankshaft position sensor is faulty
In the event of a complete failure of the DPKV sensor or a “break” in its circuit, the ECU does not receive an impulse when the pistons pass the top dead center. Accordingly, there will be no command to ignite the fuel mixture in the combustion chambers, and there will also be no spark on the spark plugs. When the DPKV fails, the “Check Engine” warning lamp (CHEK ENGINE) lights up in the instrument panel.
"DPKV malfunctions"
You can check the crankshaft position sensor yourself using the "Checking the Crankshaft Position Sensor" section.
Checking the DPKV engine crankshaft position sensor
— The low voltage electrical circuit of the ignition module is faulty
The diagram at the beginning of the article shows the electrical circuit of the 2111 engine ignition system. If there is a break in any of the system wires, the ignition system will not work.
Using the diagram, check the reliability of fastening of the wire blocks (chips) and the oxidation of the contacts in them.
— The control unit (ECU) is faulty
If the test establishes that all elements of the ignition system are in working order, then the controller (ECU) of the electronic engine control system (ECM) is most likely faulty, since the ignition system of an injection engine operates on its command.
Or the main relay (position 1 in the picture) and the ignition system fuse (6) in the relay and fuse box under the instrument panel have failed.
Relays and fuses of the ECM for injection VAZ 21083, 21093, 21099
A faulty controller will have to be replaced or sent for repair. You can check the relay and fuse yourself.
Notes and additions
Similar symptoms (the engine does not start, the engine stalls) can occur not only due to a malfunction of the ignition system, but also the power system, control system, or the engine itself. For example, “Signs of a clogged fuel filter, injector.”
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More articles on the 2111 engine of VAZ 21083, 21093, 21099 cars
— No pressure in the fuel rail, reasons
— The speed of the injection engine floats
— Popping sounds in the muffler on an injection engine, reasons
— Forced idle mode of the injection engine
— High fuel consumption on an injection engine, reasons
— Engine ignition system 2111 (ECM January 5.1 and M1.5.4N), diagram
Causes of sparking problems
If there is no spark on the injector, and not, for example, on a carburetor or gear motor, you will have to try to identify the reasons for its loss. This is due to the fact that there are slightly more factors influencing spark formation in injection systems and they look more multifaceted. If we summarize the general list of possible causes of the problem, then it is worth highlighting the following most common ones:
- The spark plug or spark plugs are flooded with fuel - there is either no spark or very weak, the spark plugs themselves are wet;
- The spark plug or spark plugs are faulty - there is no spark at all, deposits on the contacts are usually black or white;
- The crankshaft sensor, ignition module, ignition coil, switch or distributor is faulty - there is no spark at all, the engine shows no signs of “life”, the injector does not work correctly;
- High-voltage wires have broken through or there has been a loss of contacts - one or two spark plugs do not work, the rest are fully operational;
- The injector electronics (ECU or wires) are faulty - the unit does not work correctly, there is no spark at all spark plugs;
- The injector nozzles are clogged - there is no spark at the spark plugs of specific cylinders, the injector is not working correctly.
Please note that for a complete and most accurate diagnosis, it is necessary to carry out several procedures at once:
- Naturally, check for a spark;
- Assess for the presence of the symptoms described above;
- Check for relevant errors on the dashboard or on-board computer screen;
- Check the potentially faulty unit (disassembly, cleaning, diagnostics with a multimeter, etc.).
If, based on the results of all diagnostic procedures, the problem is not identified, then, most likely, a visit to the service station cannot be avoided. Otherwise, it is quite acceptable to carry out repairs yourself, of course, if you have the proper skills, abilities and tools.
What are the reasons for the lack of ignition?
The reason is simple. It consists of a breakdown of any part of the system.
So, for example, a breakdown can occur in:
- Switch. As a result of such a breakdown, the required voltage ceases to flow to the coil.
- Sensor. A broken sensor will not be able to transmit current to the switch.
- Belt. If the belt breaks, the operation of the entire system is disrupted.
- Reel. A breakdown in the coil stops the process.
- Candlelight. Carbon deposits or moisture prevent a spark from forming.
- The distributor cover and its contacts. Such a malfunction does not allow voltage to be transferred to the spark plug.
Also, a malfunction can be detected in the ignition switch itself. Then the process stops before it even begins. Another reason may be a wiring fault, resulting in communication between elements being interrupted.
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:
- 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;
- 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;
- 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.);
- 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!
Possible reasons for absence
Most modern cars are equipped with an abundance of sensors. They make the car owner’s life easier and make repairs more difficult. In the electronics responsible for the operation of an injection engine, there are, of course, several sensors responsible for the spark formation process. However, the prerequisites for the absence of a spark (VAZ-2110, injector, 8 valves) usually occur in other components. There are a number of types of possible breakdowns. The first includes various problems in the car’s fuel system. This includes malfunctions when fuel is not allowed to enter the cylinders or the supply is malfunctioning.
If there is no spark (VAZ-2110, injector, 8 valves), then you will like it due to the fuel system. Often the pump relay or the submersible element itself burns out. The test is done by ear.
Next come the tasks related to the electronic part. These are some of the most common defects. With such breakdowns, an electronic discharge does not reach the spark plug. The mixture will not be set on fire. In the midst of global problems - a complete failure of the engine, a broken timing belt. These defects should not be dwelled upon carefully.
The easiest way to check the ignition of a VAZ-21099
This technique does not require the use of special tools and devices. In this case, the entire ignition circuit is checked, with the exception of the Hall sensor. To work, you only need a nail or paper clip and a small piece of wire with stripped ends.
First, we pull out the high-voltage wire from the distributor cover. During the verification process, it must be kept at a distance of about 10 mm from the mass. Turn on the ignition. We remove the Hall sensor connector and insert one end of the wire into its middle contact, to which the green cable fits. With the other end of the wire we touch ground several times. There should be a spark during separation. If there is a spark, it means that either the Hall sensor has failed or there is no contact. Quite often, the wires inside the distributor are chafed by the plate, and it happens that the connector simply becomes loose. However, there may be such an option. When checking there is a spark, but when connected to the distributor cover, there is no spark on the spark plug caps. In this case, the slider should be replaced. When the VAZ-21099 carburetor does not spark when checking, the switch may have failed or the ignition interlock circuit, if provided, is broken.
Often the reason for the lack of a spark may be wear on the contacts in the ignition switch. In this case, the starter will rotate, but no power is supplied to the ignition system. This problem can be resolved by replacing the ignition switch.
Stage one
Usually the symptoms of difficulty are the following: the starter rotates regularly in its own standard mode, but the engine does not want to start. One of the most possible circumstances is a fuel pump that does not start. When on injection “tens” it is submersible and is located directly in the tank.
There is an option to check the element by the presence of operating sound. Turn on the ignition - there should be a rumble in the area of the rear seats. He is absent from time to time. In our version, you should check the fuses. The VAZ-2110 is a fuel-injected car, and the fuse box is located on the side of the center console of the unfamiliar front passenger. You need to unscrew the fasteners, then remove the cover, check the fuses for functionality and change them as necessary. In this case, the elements are 100% serviceable, then you need to check whether the relay will turn on, both the main one and the fuel pump. Of course, you can feel the moment of switching on with your finger. A corresponding click will also be heard.
If the fuel pump is operational, use a pressure gauge to check the presence of fuel there. If there is no pressure gauge, then press on the spool at the bottom of the fuel rail. myth element may be in a protective cap. The pressure will be completely tangible, although its power cannot be found. A running pump and no pressure indicates an obstruction in the fuel line. This is caused by a clogged fuel filter.
Stage two
If there is no spark on a VAZ-2110 (injector, 8 valves), then spark plugs are often the cause. What, they are inspected if the fuel pump is working. It is best to use a spark gap for testing. If the current is distributed over two spark plugs, then there will certainly be a breakdown to ground.
You can find out why there is no spark on the VAZ-2110 (injector, 8 valves) using a faulty controller. It is also possible that the wires from the controller to the ignition coil will break. If spark on all coils, you should check the power supply. Typical specifications are up to 200 kΩ.
Ignition module and coil
There is an option to check the error codes that are in the car’s memory. On the contrary, the ECU does not have a diagnostic function; a working module must be installed in advance.
It is likely that the wire to the ignition coil has broken or there are breaks in its winding. If a VAZ-2110 car does not have a spark (injector, 8 valves) on 2 wires, then the cause is a non-working ignition coil, also called a controller. In two cases, of course, there is a possibility of high-voltage wires breaking. The myth option is worth checking first. Look at the resistance level.
If there is no electronic discharge for some reason, then the element must be replaced. The system has an ignition module. Therefore, a useful operation would be to check the “minus”.
Possible errors in VAZ injectors
Codes, of course, indicate defects in all parts and components in the car. In most cases this is due to sensors. Temperature sensors suffer in particular - they overheat. Car owners also complain about the injectors. Problems arise due to breaks in the circuit. Once completed, they do not have the basis to work properly. This also includes the popular breakdown on the VAZ-2110 - no spark. The 8 valve injector cannot start normally due to this.
Now about errors related to the engine. The most common one is overheating. The spark plugs also overheat, causing the spark . And therefore the engine does not show any signs of life. Next it’s worth looking at the valves. These parts are usually very dirty, which in the process will lead to their complete closure. They do not allow the required mixture of air and fuel to pass through. And finally, the fans - if they don’t work, then the unit will constantly overheat.
Why is there no spark on the VAZ 2109 Injector
Content
Malfunction of VAZ-2110: no sparks. Injection valves 8: possible causes of blockage
Our client most likely broke VAZ-2110 cars, conventionally divided into three types. This is a problem in the fuel system, various malfunctions in electronics and electricity, as well as in addition to global problems (ICE, transmission). If there are obstacles in the car's ignition system, they are immediately diagnosed and the spark is gone . It is necessary to consider why there is no spark on the VAZ-2110 (injector, 8 valves). What are the prerequisites for such a malfunction?
Possible reasons for its absence
Most modern cars are equipped with many sensors. They make life easier for motorists and complicate repairs. In the electronics responsible for the injection engine, of course, there are several sensors responsible for the ignition process. However, the prerequisites for the absence of a spark (VAZ-2110, injector, 8 valves), as a rule, exist in other components. There are a number of types of potential harm. The first concerns various problems in the car's fuel system. These include malfunctions when fuel does not enter the cylinders or the supply does not work.
If there is no spark (VAZ-2110, injector, 8 valves), then you will like that it is connected to the fuel system. The pump relay or the submersible element itself often burns out. The audit is carried out “by ear”.
Below are the tasks associated with the electronics part. These are some common disadvantages. With such breakdowns, the electronic discharge does not reach the spark plug. In addition, the mixture is not flammable. In the midst of global troubles. Complete engine failure, timing belt failure. We need not dwell on these shortcomings.
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Diagnostic methods
Why did the spark disappear?
(VAZ-2110, injector, 8 valves) Questions must be explained very carefully and step by step. And for the search precondition to be successful, a multimeter is also useful, as well as a spark gap.
First stage
Typically the symptoms of the problem are that the starter is turning properly at its normal speed and the engine does not want to start. One of the most likely circumstances is a gas pump that does not start. When at “tens” the injector is submerged and located directly in the tank.
Check if there is an audio option. Turn on the ignition. a failure should occur in the rear seats. From time to time he is not there. In our version, check the fuses. VAZ-2110. This is a fuel injected car and the fuse box is located on the side of the center console for the unfamiliar front passenger. It is necessary to unscrew the fasteners, then remove the cover, check the fuses for proper operation and, if necessary, replace them. In this case, the elements are fully operational; it is necessary to check whether the relay is broken, both from the main and the fuel pump. Of course, turn on the moment with your finger. A corresponding click will also be heard.
If the fuel pump is running, use a pressure gauge to check the fuel. If there is no pressure gauge, press the coil at the bottom of the fuel rail. The element of myth may be in the protective cap. The pressure will be very noticeable, although its capacity cannot be found. A running pump and insufficient pressure indicate an obstruction in the fuel line. You'll love a clogged fuel filter.
There is no spark at the injector motor. We are looking for the reason without a scanner.
How to find the right video. about this step here Support the project! MAP.
Why sparks do not occur on VAZ cars (Kalina, 2109, 2110 2114 2115)
Why are there no sparks?
VAZ
cars (Injector)? Analysis of the main circumstances: spark plugs, explosive wires, ignition module.
READ Where is the Daf 105 Oil Pressure Sensor located?
Second phase
If there is no spark on the VAZ-2110 (injector, 8 valves), then lighters are often a prerequisite. What, they're checking that gas pump. For testing, it is best to use a space. If the current is divided into two spark plugs, then a breakdown “to ground” inevitably occurs.
Find out why there is no spark on the VAZ-2110 (injector, 8 valves), possibly on a faulty controller. It is also possible to break the wires from the controller to the ignition coil. If spark is not available on all coils, it is worth checking the supply location. Typical characteristics. up to 200 kOhm.
Ignition module and coil
You can check the error codes in the car's memory. On the contrary, the computer does not have a diagnostic function; The pre-installed module must be pre-installed.
This option is likely when there is a gap in the ignition coil or a gap appears on the coil winding. If there is no spark in a VAZ-2110 car (injector, 8 valves) for 2 conductors, then the necessary conditions. in the ignition coil at idle, as the controller is called. In 2 cases, of course, a break in the high-voltage wires is possible. The myth is an option that should be checked first. Look at the resistance level.
If for any reason there is no electronic discharge, the element must be replaced. The system has an ignition module. Therefore, the replacement operation will check for “minus”.
Possible errors in the VAZ nozzle
Codes, of course, refer to defects in all parts and components of the machine. In most cases this is due to sensors. In particular, temperature sensors suffer. they overheat. Car owners also complain about the attachments. Obstacles arise due to broken circuits. Once completed, they have no reason to work. This includes popular VAZ-2110 breakdowns. no sparks Because of this, the 8 valve injectors cannot start normally.
Now about engine-related errors. The most common one is overheating. The spark plugs also overheat, so the spark . Therefore, the motor shows no signs of life. Next is to make the fittings. These parts tend to be very dirty, which will eventually cover them completely. They do not allow the necessary mixture of air and fuel to pass through. But the fans. if they do not work, the unit will constantly overheat.
READ How to Check the Clutch of a VAZ 2109
Other faults
If the starter does not rotate, the spark disappears between the ignition switch and this element. This often happens with a low or faulty battery. A typical battery during testing is approximately 11.8 V. Faulty ignition cylinders will appear immediately when the driver inserts and returns the key. If the key rotation is very light or heavy, you need to change the lock. The starter relay or ignition system is also one of the possible circumstances of lack of spark. But it is impossible to check these nodes without outside help. In the starter, the retractable device may jam. In this case, the spark is lost along the way. Owners of experienced cars hit the starter with a key, in other words, a hammer, to return the spark. However, this is only important at the point of failure.
What if the spark disappears in a VAZ-2110 car? Test the starter in a garage with a battery. If you push the body of the device towards the negative of the battery and pull the positive wire towards the retractor, the device will come to life. Often the spark may disappear when power is applied to the starter. It is advisable to look at this diagram using a multimeter. You can't cope on your own. an assistant works with the key during measurements.
Conclusion
Source
Other faults
If the starter does not spin, the spark disappears between the ignition switch and this element. This often happens when the battery is discharged or faulty. When tested, a regular battery indicates approximately 11.8 V. A faulty ignition cylinder will immediately appear just when the driver inserts and turns the key. If turning the key is very easy or difficult, you need to change the lock. The starter relay or the accounting ignition system is also one of the likely circumstances of the lack of a spark. But there is no way to check these nodes without the help of others. The “retractor” device may be stuck in the starter. In this case, the spark is lost along the way. Experienced car owners hit the starter with a key, or in other words, with a hammer, to return the spark. However, this is only relevant at the site of the breakdown.
What to do if there is no spark at the injector? Possible problems
One of the most common reasons causing the inability to start a gasoline engine is the banal lack of spark at the spark plugs. Under such circumstances, there is nothing to ignite the combustible mixture on the compression stroke, and as a result, the engine refuses to work. Depending on what kind of power system the car is equipped with, it is determined exactly how to proceed to determine the exact cause of the lack of a spark and measures to return it. We’ll talk in more detail about this problem on injection engines today. Interesting? Then be sure to read the material below to the end.
