- 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.
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:
- 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.
- 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.
- 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.
Carburetor internal combustion engines
Of course, the engine may not start due to a malfunction of individual carburetor elements (contamination of jets, channels) or incorrect adjustment. If fuel does not flow, it is necessary to defect the fuel pump parts.
If you understand that fuel is being supplied to the intake manifold, but there is no ignition of the fuel-air mixture, you should “dig” in the following direction:
- Unscrew the spark plugs and evaluate the carbon deposits. If you are unable to start the engine right away, you may have already “flooded” the spark plugs. Now it is advisable to unscrew and dry them in any case;
- disconnect the main armor wire, bringing it closer to the metal part. Try turning the motor. You will immediately notice a spark if it comes to the ignition distributor. You should also check the armored wires for “breakdown”;
- If there is no spark on the main wire, carefully inspect the wires for breaks. If the circuit connections are in good condition, you should proceed to checking the coil. It is she who generates the spark;
- ignition distributor and its cover. Check the size of the gap, the cleanliness of the contacts, and the presence of play. Of course, if the ignition is not set correctly, the car will not start.
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.
Other problems starting diesel engines
Another reason why the starter spins for quite a long time, but the engine cannot be started, may be caused by air in the high-pressure pump. First you need to check if there is power to the damping valve. We turn on the ignition and use the control lamp that is already familiar to us. When connected, the valve should make clicks, and their absence may indicate a malfunction.
All that remains is to check the fuel line - unscrew either the injector return line or the plug. If there is a manual pumping option, it should be carried out until diesel fuel flows and air stops flowing. If you cannot bleed, then it makes sense to check the fuel filter, which is often clogged with paraffin from the fuel or ordinary dirt.
Friends, these are the main reasons why the engine may not start even after turning the starter for a long time. If you have not yet joined the number of blog subscribers, I recommend doing so right now. In the coming days, we can expect new useful materials from a variety of areas related to the car and its maintenance. Let's say goodbye for today!
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.
Stalled and won't start 2114
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avs vovan14
salgir
The belt was not torn - I looked. An acquaintance checked the spark - laid the wire from the ignition module from the spark plugs to the engine body and I started it - no spark. My immobilizer was not connected.
Added after 6 minutes
Could the fuse block be in the hood be the cause?
avs vovan14
The timing belt may have jumped several teeth. I'd check the marks
Added after 12 minutes
I'm sorry. there is no spark. then only if the belt is broken
ildarqazxswewq
salgir
ildarqazxswewq
Boblrc
Dimid
Night
On Saturday I will look at everything. There is a suspicion of a timing belt. Since when replacing the timing belt, the timing belt technician tightened the pulley and did not make any play in the belt tension (which should be 90 degrees). I just tightened the pulley, started the car and it started, paid the money and left .And this problem started a week after replacing the timing belt.
Added after 3 minutes
As for the injectors, the injectors are working, I’m confused by the voltage from the ECU to the injectors + 12, and the rest + 0.6. I changed the ECU (Bosch 1.5.4) - it won’t start. I left the ECU I was using (January 5.1.1-71 - reflash)
Added after 6 minutes
When cranking, the starter spins, there is voltage on the battery (12.5) I replaced the module with a new one, but it does not start.
Added after 11 minutes
If anyone else knows what the reasons may be. Please write. I will be a great thank you.
Added after 16 minutes
And if the DPKV does not work or the wire is broken, does this affect the spark of the spark plugs (will it happen or not?)
avs vovan14
avs vovan14
, and we write, and we write, and we click, and we poke (at the keyboard).
Should I look at the ECM diagram? How about ringing the wiring with a cartoon? How about using a control to look at the impulses on the forces? Or better yet, with an oscil, and forces, and a module, and DPKV. No instruments, circuits, oscillators, scanners? Why would you want to go “there”? Are you living on a desert island? Is there any service station nearby?
I've already had enough. Ignorant in politics, ignorant in construction, ignorant in auto repair.
ervik
tolich48
Guys, PEACE and PEACE.
topic for beginners, let's be lenient
On this topic. avs vovan14
The simplest problem is that the car stalled while driving. The fault is searched for a maximum of 15 minutes. In your case, everything has already been chewed. no spark? The ECU doesn't see the rotation? No signal to the injectors? (ideally, look at the rotation speed with a scanner, or at least with a shuttle bus) This means there is no rotation signal to the ECU. DPKV, connector to it, wire from it. Or there is simply no driver pulley. It doesn't depend on the belt in any way, even though there won't be one at all. Good luck! PS. Maybe it's just not your thing? Give the car to a specialist, and go about your business, and during this time you will earn money for repairs and have enough left over to drink some coffee. No offense?
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.
