How to check the armor? Verification rules

Despite the growing popularity of dieselauto, Russians continue to drive gasoline cars. These cars have their pros and cons. But the main difference in the method of ignition of the combustible mixture. If in the diesel engine it lights up from the compression force, then the gasoline system provides a whole system. It combines the spark plugs, the ignition distributor and the coils. High-voltage wires are also an integral part. How to check the armor in different ways? We'll talk about this in our today's article.

a brief description of

This item is only available on gasolineengines. It is an integral part of the ignition system. The main task of the high-voltage wire in the car's engine is the transfer of the electric pulse from the coil to the candle.

The number of ignition wires can be different, depending on the number of cylinders in the motor. The element itself consists of:

• Metal contact.
• Isolation.
• Current-conducting vein.
• Protective cap.

When operating it is important to keep the wire in good condition. After all, it depends on it the stability of the motor on all modes.

Main features

How to determine that the high-voltage drive has become unusable? Outwardly, these factors are accompanied by increased fuel consumption, a difficult engine start and unstable operation at idle.

These characteristics can be equated to "troeness"When one of the cylinders does not work in the motor. In fact, so it is - the spark is fed to the candle intermittently or does not arrive at all. As a result, the piston is idling, fuel consumption is observed. Next, we'll look at how to test the armored tube with a multimeter with your own hands.

Diagnosis: Method No. 1

First you need to open the hood and disconnectwire from the seat (where it contacts the candle with one side and with the coil on the other). We set the tester in the resistance measurement mode. How to check the armored car with a multimeter on the VAZ? After that, connect the test leads to both outputs. Polarity does not matter. Then we look at the meter reading. Ideally, it should give out a figure of 3-10 ohms. If the value is lower than the triple or completely zero, then the element has become unusable. Also note that on different motors this parameter will be different. On average, the resistance will be about 5 ohms. Some manufacturers specify this parameter directly on the wire. After measuring the readings, set the wire back in place and proceed to the next. All the results are recorded in a notebook.

Here's how you can check the armored tester. In addition, we note that all indications should not differ significantly. The permissible error is not more than 4 ohms. Even if there is resistance, the wires change entirely with a large difference in readings. This equates to a malfunction.

note

When conducting a diagnosis operation, do notpull out all the wires at once. Each of them is responsible for his own cylinder. If you interchange them in places, the machine simply will not start. Therefore, we check each one in turn, or sign in advance which cylinder he is responsible for.

Diagnosis: method number 2

How to check the armored car at VAZ and other cars,if there is no specialized tester? You can visually inspect the elements. But for this we need complete absence of light. So, start the engine and open the hood. We look at the condition of the wires without a flashlight. If small sparks emanate from them, then the elements have become worthless. This occurs in the breakdown of insulation. Usually sparks have a bluish-white hue and they very quickly slip through. In daylight, it's almost impossible to notice them with the naked eye.

But in the dark they can be clearlysee on the running engine. In this case, the engine will not always trip. A similar phenomenon arises already at a late stage, when the breakdown has come finally. Also you can hear the characteristic clicks. This means that the current from the coil moves not to the candle, but to nearby metal objects - for example, the exhaust manifold.

Now you know how to test an armored tube without a tester. But there is another method that does not require the presence of a multimeter. We will discuss it further.

How to check the armor? Method number 3

Another proven method is to establishnew serviceable wire. The essence of the check is very simple. We take a new packing with wires and start putting everyone in our cylinder one at a time. If the trip is gone, then one of the old ones had a breakdown of isolation. But do not forget that these wires are not universal. Everyone is responsible for his own cylinder. How to determine for which exactly the wire responds from the new packaging? It's simple - you need to find out their length. It is different for each wire.

Causes of malfunction

These items may malfunction due to leakagecurrent and disconnection of the electrical circuit. These are the main causes of faults in high-voltage wires. A chain break usually occurs in a place where the metal contact is connected to the core. This is due to:

• Inaccurate dismantling of the wire (it is strictly forbidden to pull it by the cord - only for the rubber cap).
• Oxidation or destruction of the veins.
• Bad connection with system terminals.

Also, spontaneous sparking occurs at the point of rupture, causing excessive heating and, as a consequence, fusion of the wire.

As for current leakage, it is caused by pollution:

• Contact candles.
• Ignition distributor covers.
• Coils.

Sometimes leakage occurs due to damage to the insulation and rubber cable caps. In view of this, their dielectric properties deteriorate.

Another reason is constant vibration. They can be amplified if one of the motor bearings is worn out. With constant vibration, the contact between the cord and the ignition distributor cover, as well as the spark plug, deteriorates. In winter, the wires become stiff, so their likelihood of damage along with the vibrations increases at times.

Conclusion

So, we figured out how to test the armored tube in different ways with our own hands. If there is a breakage, do not hesitate to fix it. This may adversely affect the performance of the motor.