VAZ 2114 won’t start: looking for the main reasons

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.

Main reasons and methods for solving them

Figuring out why the engine stalls is not difficult. In addition to typical problems, the following types of problems may be present:

A fairly common problem, especially on 16-valve engines, is a broken timing belt. In this case, the valves on the VAZ 2115 bend. Such breakdowns not only lead to the inability to start the engine. But they require a complete engine overhaul. The situation is similar if the engine knocks. If you can’t start the car even when it’s hot, you should check the air supply channel. Moreover, starting is not always possible the first time.

There are many nuances associated with setting the ignition and ensuring normal engine operation. You will need to carefully understand all the subtleties and nuances. Many problems associated with the inability to start the VAZ 2115 engine are associated with typical malfunctions and repairs take a minimum of time.

Check engine light is on

Difficulty starting the engine is influenced by a number of simple reasons, which you can eliminate yourself in the garage, having a standard set of tools with you.

In the process of rebuilding the starter. The arrow indicates worn brushes.

Fuel problems

In the process of replacing the fuel pump grid. On the right is the old one, and on the left is the new coarse mesh

Small particles of debris getting into the gas tank. This problem is treated by cleaning the fuel system and replacing the filter.

Location of the phase sensor under the hood

Failure or incorrect signal supply from the sensors to the ECU (their diagnostics are required, and if a malfunction is detected, replacement with new ones):

Clogged air filter

Gasoline pump

The fuel pump is located under the rear seat

The fuel pump does not provide the required pressure, which is why the injectors do not spray fuel, but simply splash it. In order to discard this option, you need to measure the fuel pressure with a pressure gauge (the nominal one should correspond to the norm of 3.2 bar).

Engine failure

Reduced compression in the cylinders is one of the most terrible situations for a car owner. In this case, flammable gases enter the crankcase, and new vapors do not ignite.

Preparing to measure engine compression

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.

We diagnose the starter

To remove the starter and inspect it for faults at home, you can use a step-by-step algorithm:

Step 1: put the VAZ-2114 on the repair pit.

Step 2: remove the car engine protection.

Step 3: Open the hood.

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.

The most common reasons: what is the problem?

It is worth noting that a malfunction can be determined by indirect signs without even opening the hood of the car. For example, if the starter turns, but the engine does not catch on or immediately stalls, the problem lies in the fuel system. Without exception, all the reasons for the inability to start the engine can be divided into two main groups:

It is also necessary to include the following in a separate category of faults: the engine “knocked”, the timing belt broke. In this case, expensive repairs will be required. In other cases, you can get by with a little bloodshed.

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

Welcome to ChipTuner Forum.

Theme Options

print version

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.