VAZ 21093 (injector) does not start: what to do?

What to do if the engine of the car VAZ 21093 (injector) suddenly stopped starting? This article will tell you about the most frequent malfunctions that happen on this model of cars. Of course, it will be much easier if you can diagnose the motor. But if trouble with him occurred far from populated areas, and to the nearest SRT hundreds of miles away? Then you need to look for the cause of the malfunction and try to eliminate it.

If the car does not start in winter

For owners of nines with injector motors there will be no secret that these machines are not usually built in the cold season. The reasons for this may be two:

1. Loss of battery capacity.
2. Too fuel the air is too cold.

If the battery has lost capacity, the crankshaft can be scrolled, but the mixture will not ignite. The reason for this is insufficient spark energy and low pressure in the fuel rail.

If, however, cold air is supplied to the injectors, then the flow sensor may have a large error, resulting in an incorrect calculation. Consequently, the proportion of the air-fuel mixture is not 14: 1, but quite different. To help the motor start, you can apply warm air to the filter with a conventional hair dryer. And if the battery has sat down, then give it at least a couple of hours to stand on recharging.

Spark plug

Try to always monitor the technical condition of the car. After all, in the case when the engine VAZ 21093 (injector) ceases to start, it turns out that the owner simply did not follow him. In a timely manner, replace all consumables - filters, candles, liquids. Only in this case you are guaranteed stable and confident operation of the motor. And with these elements anything can happen.

First, at a large run, electrodes begin to wear out. The central (positive) is erased to such an extent that the gap is doubled. Secondly, be sure to monitor the color of the electrodes, it will tell you a lot about the state of the engine. Thirdly, they can simply be flooded as a result of the fact that you tried unsuccessfully and for a long time to start the engine.

Nozzles: diagnostics

When it was determined that the spark between the electrodes is (and it has a bright blue color), the gaps are normal, and the motor still does not start, you need to check the injectors. These are devices that inject the fuel-air mixture into the combustion chambers of each engine cylinder. If the engine VAZ 21093 (injector) does not start, the probability that the work of the injectors is broken is extremely high.

To check the injectors of the fuel system, you will need to have diagnostic equipment. But this is for an accurate check. To, as they say, "by eye" to determine the serviceability, you can extract the nozzle and connect it to the food. The ideal form of spraying the fuel-air mixture is a cone-shaped torch. And in the event that the fuel pours or drips with difficulty from the injector, we can say that pollution has occurred. Cleaning the spray guns in this case will help you.

Timing belt

Anything can happen with this element. First, the belt has the property of tearing, and it happens at the most inopportune moment. It is worth noting that on engines with a volume of 1.5 liters, fortunately, the break in the belt does not end with the bending of the valves or the repair of the cylinder head. But more trouble can arise in the event that the timing belt just jumped to 1-2 teeth. This happens when the belt is loose. To make sure the settings are correct, you need to see if the marks on the distribution and crankshafts match. But if the engine VAZ 21093 (injector) does not start, be sure to check the crankshaft position sensor and its connection wire. This device must first of all be diagnosed.

Operation of injector injection system sensors

So, now it is worth to tell a little about the sensors VAZ 21093 (injector), as well as their main breakdowns. Note that the failure of some devices leads to the fact that the electronic control unit reads the wrong information. Consequently, the engine's operation is unstable or it refuses to start at all. For example, the air flow sensor in case of a malfunction causes a signal of an incorrect shape and amplitude. This affects the acceleration of the engine, as well as the number of idle speed.

In the same case, if the car VAZ 21093 (injector) there are dips and tugs at the time of transition from idling, there is a malfunction in the throttle position regulator . Pay attention - this is not a sensor, but an actuator. It does not read, but controls the position of the rotor. Often a liquid temperature sensor in the engine cooling system breaks down. At the same time, there is a slight increase in gasoline consumption and it is sometimes difficult to start up with a hot engine.

Wiring problems

Listen to whether the fuel pump is running when the ignition is switched on. If there is no characteristic sound, then check the car VAZ 21093 (injector) fuses. Namely - the one that is responsible for supplying power to the fuel pump and its electromagnetic relay. It is also superfluous to check the power supply on all sensors of the system. Check for breakage all wiring of the car. But if everything is in order, and the machine does not start, then most likely there is a failure in the software installed in the computer. In this case, you will have to contact the workshop for a complete diagnosis and firmware microcontroller.