VAZ-2107. Injector does not start: possible causes and solutions
Despite the development of the auto industry, classicalVAZ models are still in great demand in the CIS countries. The latest models of the "Classic", namely the VAZ-2107, were equipped with an injector intake system. It is more reliable than carburettor. But what to do, if the VAZ-2107 starts and stalls? Injector - the system is more complicated. But you can solve the problem yourself. Let's look at how to do it.
Is the starter spinning?
First you need to check the voltage in the sidecar network. For a normal start up of the machine, this indicator should not be lower than 12.5 V. To accurately measure the voltage, it is necessary to use a voltmeter.
Starter failure
If there is a short in the casing or wiringthe damaged part should be replaced. How do I check an item? To do this, you need to use a multimeter. One wire connects to the place of friction of the brushes, and the second - to the axis of the armature. If the needle of the instrument deviates from the values, it may be a malfunction of the armature or winding. Check the brushes. They should move easily, and their springs - be elastic and well press down on the anchor. After replacing the damaged components, restart the motor.
Ignition system
What to do if with a well-charged battery andserviceable starter does not start VAZ-2107 (injector)? The reasons can be hidden in the ignition system. Here it is non-contact type. The first thing to check is the state of the candles. They may simply "pour". Unscrew the elements outwards and inspect the condition of the electrode. In the presence of plaque, you should clean the part in alkaline solution and screw back. Also check the gap between the electrode. To do this, use a special probe. The normal reading should be between 0.7 and 1 millimeter.
What if the indicator is not correct? The electrode can be bent. But do it carefully. If the figure is less than the norm, use a minus screwdriver. If more, tap the electrode over the metal part (for example, the engine bonnet). It would be superfluous to check the candles for a spark. For this, a special gun is used. The spark itself should be blue. If the parts have passed more than 60 thousand kilometers, they should be replaced. Also, when this period is reached, the high voltage wires that are coming to them from the ignition distributor change.
When candles are filled
If a bad start VAZ-2107 injector(grasps, but does not start), then the combustion chamber is full of gasoline. The normal ratio of fuel to air should be 1:14. Such a problem often happens on such cars. When you start, the fuel pump pumps a lot of gasoline. By the way, on the injector motors it is electric, submersible type. Installed directly into the tank.
How to dry candles without removing them? To do this, open the throttle when starting. It is here mechanical and is activated by pushing the accelerator's throttle through the cable drive. So the combustion chamber will receive more air and the engine will immediately start.
The songwriter
In the car VAZ-2107 is usedignition. If the machine does not start, check the condition of the contacts on the high-voltage wires. When the season changes, condensation forms on them. The Trembler has five outputs.
Four of them go to the candles of the cylinders, and one(central) to the ignition coil. At the metal ends, a white coating often forms. Because of it, the slider can not transmit impulses to the coil. By the way, the check of the ignition distributor itself will be superfluous. The part looks like this.
If it is burnt, the part should be replaced. The price of the new item is 150 rubles. If a spark is generated on the ignition coil when the motor is started, the high-voltage wire must be replaced. He also "punches" on candles. You can see it at night. Near them are small sparkles of blue color. In this case, the wires change in a set. They are inexpensive. There are new elements of the order of 700 rubles.
The problem with the electric pump
Previously, one of the main problems at the domestic"Classic" concerned a fuel pump, which constantly overheated. But in the injector "seven" it is electric and is cooled by the gasoline itself, which is in the tank. If the element is not supplied with electricity, the machine simply does not start. The first thing you should pay attention to is the fuse block.
On the cover it is written which one of them is responsible for the fuel pump. If the fuse blows, replace it. You can use a 15- or 20-ampere element.
Determine serviceability visually
Is it possible to check if the voltage is applied tofuel pump, without a multimeter? To do this, when you turn on the ignition should carefully listen to his work. When the key is turned to the third position, it must produce a characteristic buzz. It can be heard in the back of the cabin. If it is not there and the VAZ-2107 (injector) does not start, the problem is the power supply. It is worth checking the pump relay. It should produce characteristic clicks. Experienced motorists carry emergency relays and fuses in case of sudden breakdowns. This relay is located on the shelf under the glove box.
Low pressure
Why is not the VAZ-2107 (injector) started? Problems can hide in the low level of fuel rail pressure. For a normal start of the injector engine, at least 2.8 atmospheres is required. Check this by unplugging the feed tube from the ramp. Use a manometer to do this. Malfunctions with the pump can occur due to frequent overheating. But how does this happen if it is submersible? The fuel pump kills driving on an empty tank. If the light comes on, do not tighten it with refueling. The cost of the pump for the injector "seven" is 3 times higher than for the carburetor.
Filter Status
The next situation also happens. You came to your destination, turned off the engine for two minutes, got into the car and could not start it again. What if the VAZ-2107 (injector) does not start on a hot one? The fault can be a clogged fuel filter. Its replacement period is about 50 thousand kilometers. Also, the fault of a hard start is a dirty air filter.
If it passed more than ten thousand kilometers, then it must be replaced. Otherwise, you will encounter startup problems.
VAZ-2107: the injector starts and immediately stalls
In this case, check the mass air flow sensor. It is located immediately behind the plastic filter housing.
This element receives information about the flowair and transfers it to the control unit. As a result, the electronics decides on the composition of the combustible mixture. The unit can intentionally adjust the concentration of fuel and air. Resource sensor DMRV is 150 thousand kilometers. If contaminated, the item may send false readings. Due to the poor mixture of VAZ-2107, the injector does not start or works and immediately stalls. Also check the condition of the air nozzles for leaks. If necessary, replace.
LCPD
If the vehicle has a good fuel systemVAZ-2107 (injector) does not start, check the crankshaft position sensor. If it is defective, the control unit will stop supplying fuel due to lack of information about its position. The cost of this element is from one to one and a half thousand rubles.
Conclusion
So, we found out for what reasons the car VAZ-2107 is not started. As you can see, you can find and fix the malfunction yourself, for a small price.
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