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Causes of a car coil malfunction and its signs

Causes of a car coil malfunction and its signs

    The car coil is one of the essential and important parts for the operation of the car. It is a compact electrical transformer that works with a current of 12 volts, and it is mostly found inside the car batteries, as it works to convert the highest voltage inside it to burn fuel and run the engine.

    It should be noted that for each spark plug or what is known In spark plugs, you need a special coil connected to a handle and wires, and fixed on top of the candle, and each candle needs 15,000 or 20,000 volts of electricity to form an electric spark to burn fuel and run the engine, so the coil must be very strong so that it can perform its function, and the coil may be exposed For malfunctions that cause poor fuel intake or engine failure, and this article explains the most important causes of car coil malfunctions and the signs of those malfunctions.

Causes of car coil malfunction

    There are several reasons for a car coil malfunction, including the following:

Causes of a car coil malfunction and its signs
Causes of a car coil malfunction and its signs

1. Car coil overheating

The high temperature of the car coil causes a weak ability to conduct electricity, which leads to the car engine stopping or difficult to operate, and the car coil is usually made of silicon and iron, while the rest of its components and internal hinges differ, so the temperature of its internal parts is less than its temperature much.

2. Increase the electricity inside the coil

The coil is exposed to daily wear or tear, and despite its strength and durability, it will eventually begin to disintegrate and run on additional amounts of electricity during the burning process of car gasoline, which leads to damage to the insulation between the coil and the candles, and thus a mechanical failure in the car.

3. Malfunction of coil resistance

The low resistance of the coil causes a high flow of electricity through it, which leads to the damage of the entire coil quickly, as the different levels of resistance weaken the spark when ignited, which causes the inability to start the car, or stop it during work, so it is necessary to maintain Maintain a constant level of coil resistance.

Signs of a car coil malfunction

    There are several signs of a car coil malfunction, the most important of which are the following:

1. Reverse Bounce

The reverse rebound of the car is one of the important indicators of the beginning of a malfunction of the car coil, and the reverse rebound occurs when the unused or burned gasoline inside the engine begins to exit from the exhaust of the car, or through the spread of black smoke from the exhaust resulting from the smell of gasoline, so it is recommended to solve the problem by Start and work on repairing the coil, to avoid the development of the malfunction and damage to the coil.

2. Low fuel consumption

Low fuel consumption is another indication that the car coil has a malfunction, and this problem can be observed when consuming a small amount of fuel while walking a long distance in the car.

3. Difficulty starting the engine

The weak coil of the car, or a malfunction in it, causes a malfunction and failure to perform the functions of the engine when the car is running, causing vibration or the appearance of loud sounds and noises, in addition to the inability to start the car. The coil malfunction can also appear while driving at high speed, The car starts to vibrate.

4. Sudden stop of the car

A weak or damaged coil of the car causes the car to stop suddenly while driving, and this occurs due to the irregularity of the ignition spark sent to the engine through the coil, which causes the engine to stop, and a problem occurs when trying to restart it.

5. Motor vibration

Engine vibration, annoying noises, or noise during acceleration are indicators of a malfunction in the vehicle's coil.

6. Engine ignition light

The ignition of the engine light on the dashboard is a clear indication of a malfunction in the car coil, as the engine light is a secondary diagnostic tool for most car malfunctions, so it is necessary to check the car coil and repair the malfunction, to avoid aggravating the problem, or damage to the coil or engine.

Tips to avoid car coil failure

    There are several important tips that can be used to avoid a car coil malfunction, including the following:

  • Check the coil plugs regularly, as a malfunction of the plugs can cause a failure in the production of spark to ignite the fuel inside the engine, so checking the plugs helps to keep the handles healthy and good.
  • Inspect the coil cover and make sure that there is no fuel or oil leakage, in addition to checking the wires allocated to the electrical system inside the car. It should be noted that the first signs of a failure in the coil start from the electrical system.
  • Regular maintenance and checking the coil according to the attached instructions from the manufacturer, taking care to do periodic maintenance for the entire car, to make sure that there is no defect in any of its parts, in addition to making sure to resort to the mechanic when noticing any of the symptoms that indicate the coil malfunction.


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