High-voltage ignition wires are transmitted from the ignition coil electrical pulses for candles. They consist of a protective layer (isolation), conductive veins, protective caps and metal contacts. Today we will talk about possible malfunctions of high-voltage ignition wires and how to detect them.

High-voltage ignition wires, the most common faults

It is possible to understand that high-voltage wires are damaged or failed, on the following features:

1. Increased fuel consumption.
2. Reduced motor power.
3. If the engine stalls.
4. Unstable operation of the power unit on medium and high revs.
5. Difficult launch of a motor in raw weather.

The main malfunctions of high-voltage wires - current leakage and electric circuit break.

Current leakage occurs as a result of a number of reasons:

1. Resistance is too high.
2. Contact malfunctions - in places connections with a coil or candle.
3. Conducting lived broken.
4. The insulating layer is damaged.

High-voltage wires than threatening the gap of high-voltage wire

The rupture of the electrical circuit is formed in the place where the metal contact of the wire and conductive lived, as well as other parts of the ignition system are connected. This can occur during the destruction and oxidation of the veins, removing the wire or poor connection of the findings of certain parts of the ignition system. In places where the compounds are impaired, heating and springs occur, which makes the situation even worse and can lead to burnout of the veins or metal contacts.

Visual inspection of high-voltage wires, to pay attention to

To begin with, it is necessary to inspect the wires for the presence of visible defects, for example, cracks, fractures, breakdowns, and so on.

1. The visual inspection of high-voltage wires should be carried out indoors with muffled light.
2. Next, open the car hood and turn the ignition motor.
3. Now you should pay attention to the presence of breakdowns on the wires - if there is a spark on the wire, it must be replaced.

Resistance to high-voltage wires, check the resistance to the multimeter

The resistance of high-voltage wires should be measured using a multimeter.

1. First we translate the computing device to the module mode.
2. Then pull out the high-voltage wire from the first cylinder and the ignition module.
3. Electrodes from multimeter Crepim to high-voltage wires.
4. Check all the wires and observe the device performance.

All necessary information about the resistance is written on the insulation of the wire. When it normally works, the value of the measuring instrument should be 3.5-10 com. Indicators may differ, according to this satisfactory, they consider the scatter between them about 2-4 com. If the indicators are higher than optimal, it is necessary to replace high-voltage wires.

It is worth saying that experts are recommended to replace armored wires at once with a complete set, in order to avoid lining as a result of the incomprehension of the manufacturer and the wires themselves. Resistance indicators are capable of changing depending on the length of the wire, it is because of this between the fourth and first cylinders, deviations are visible. In addition, the resistance value in the armor guns from various manufacturers also have some differences.

Professional tips when choosing high-voltage wires

When choosing automotive armored wires, it is recommended to consider the type of conductive conductors and insulation material.

type of conductive core

Depending on the type of conductive conductors of the armor, can be divided into three groups:

1. Wires with copper conductor. This type of automotive ignition armored aircraft is considered the traditional and simplest in the device. This carrier conductor with a copper stranded wire, which is covered with a layer of isolation. In such a drive, minimal resistance and a significant level of interference created by it during operation. Therefore, a fur-supplying resistors are included with these wires.
2. Cables with non-metallic conductor and distributed low resistance, which consist of fiberglass, which is saturated with graphite and core, which is made of linen thread. The core is enveloped by a protective sheath with ferroplast, on top of which an intestine is applied from a metal wire. These wires have low resistance, so they require the installation of interference devices.
3. Wires with non-metallic conductor and low distributed resistance that do not require the installation of resistors. Their conductive lives are made of polymers that are impregnated with the particle softeners of cotton yarn and fiberglass filaments sprinkled with graphite. As a rule, the conductive core is a non-metallic reinforcing braid, covered with a layer of isolation.

isolation material

Quite often, for insulation of armored wires, they will apply an inexpensive material - polychlorvinyl or polyvinyl chloride. The temperature range for which its work is calculated - 20 - +120 degrees Celsius.

More reliable is insulation with an elastomer, which is made on the basis of a copolymer of ethylene, propylene and a diene monomer. It has good dielectric properties and high resistance to the effect of aggressive liquids. In addition, it is wear-resistant and can operate at a temperature of -30 to +180 degrees Celsius.

Silicone is the most expensive insulating material for armored wires. It is characterized by high resistance to temperature drops -15 - +250, excellent insulating characteristics and unlimited service life. Such indicators made this inorganic polymer in the most popular and indispensable material in production.

It is worth noting that the insulation of the automotive ignition armored wires may be single-layer and multilayer. When choosing high-voltage wires, we advise you to choose silicone models with a large diameter of the core section. They do not need the installation of additional resistors, overwhelming and they have the best indicators of the current.