Ignition coil

What is a 125cc motorcycle ignition coil?

Understanding the role of this essential part

La 125cc motorcycle ignition coil is a fundamental part of your two-wheeler's ignition system. It plays a crucial role in transforming the low voltage of the battery into a high voltage needed to create a spark at the spark plug. This spark is essential to ignite the air-fuel mixture in the engine cylinder, thus allowing the engine to start and run.

Without a working ignition coil, it would be impossible to start your motorcycle, making it an essential part for any biker. In addition to its primary role, a quality ignition coil ensures efficient combustion, improves engine performance and contributes to optimum fuel consumption. It is therefore of paramount importance for the efficiency and longevity of your 125cc motorcycle.

How the coil works

The operation of the ignition coil is based on the principle of electromagnetic induction. It consists of two windings: the primary and the secondary. The primary is connected to the battery and receives a voltage of 12 volts. When current passes through this winding, it creates a magnetic field around the iron core of the coil.

When the current is suddenly interrupted, this magnetic field collapses, inducing a high voltage in the secondary winding. This high voltage, which can reach up to 30 volts, is then directed to the spark plug to create the spark needed to ignite the air-fuel mixture. Through this process, your motorcycle's engine can operate optimally, ensuring consistent and reliable performance.

Importance of Ignition Coil in Motorcycle Electrical System

The ignition coil is an integral part of the motorcycle's electrical system. It works in synergy with other components such as the battery, the distributor and the spark plugs to ensure the proper functioning of the engine. All these elements work together to start your motorcycle, supply it with energy and optimize its performance. The ignition coil is therefore inseparable from the electrical system of your motorcycle and requires regular attention and maintenance to ensure optimal performance of your two-wheeler.

The different types of coils for 125cc motorcycles

Original, adaptable and used coil

There are mainly three types of ignition coils for 125cc motorcycles: stock coils, aftermarket coils and used coils. Each of these options has its own advantages and disadvantages. Par Moreover, it is crucial to understand that each type of coil has its specificities, which influence not only their performance, but also their lifespan and adaptability to your two-wheeler.

• Original coils: These reels are manufactured byar the motorcycle manufacturer and are specifically designed for your model. They guarantee perfect compatibility and optimum quality, but can be more expensive. Their use ensures optimum performance and increased longevity.
• Adaptable coils: Made byar From third-party companies, these coils are designed to be compatible with multiple motorcycle models. They often offer a more economical alternative without sacrificing quality. They are ideal if you are looking for a more affordable solution or if your motorcycle model is hard to find.
• Used reels: These coils are used, but still in good condition, parts salvaged from other motorcycles. They can be an interesting economical option, provided they are rigorously inspected before use. They are a viable solution for those looking to save money without compromising the performance of their two-wheeler.

Choosing the right coil for your two-wheeler

When choosing the best ignition coil for your 125cc motorcycle, it is important to consider several criteria, such as compatibility with your motorcycle model, build quality, and reviews from other users. Make sure the coil you choose is compatible with your ignition system and meets your specific needs in terms of performance and durability. It is also relevant to consider the cost of the coil par in relation to its quality and durability, as well as the availability of after-sales service.

Signs of Coil Failure

What are the signs of malfunction?

There are several signs that may indicate a faulty ignition coil on your 125cc motorcycle. These symptoms may vary depending on the severity of the fault, but here are the most common:

• Difficulty starting the engine
• Vehicle power loss
• Excessive fuel consumption
• Misfires
• Abnormal engine vibrations

If you notice any of these symptoms, it is recommended that you check the condition of your ignition coil to prevent damage to other components in the ignition system.

Causes of Coil Failure

Ignition coil failures can be caused by:ar several factors. It is important to understand these causes so that you can take preventive measures and extend the life of your coil:

• Natural wear and tear due to aging
• Exposure to extreme temperatures
• Infiltration of liquids such as oil or water
• Electrical problems such as short circuits or faulty connections
• Using dirty or worn spark plugs

How to test a coil?

Procedure for testing a coil

Testing an ignition coil is a relatively simple process that can help you identify any faults. You will need a multimeter to perform this test. Before you begin, make sure the motorcycle is off and the coil is cool to avoid any risk of electrocution or burns. Here are the steps to follow:

1. Disconnect the ignition coil from the distributor.
2. Set the multimeter to resistance (Ohm) measurement mode.
3. Measure the resistance between the primary terminals of the coil. The resistance value obtained should be in accordance with the manufacturer's specifications.

It is important to note that each manufacturer has its own specifications. Be sure to refer to those for your motorcycle model.

Interpretation of test results

If the measured resistance is greater or less than the specified resistance range par the manufacturer, this indicates a faulty ignition coil that needs to be replaced. However, even if a coil passes the resistance test, it does not necessarily mean that it is in good condition. It may be necessary to test it dynamically, observing its behavior when subjected to a load.

A dynamic test involves starting the engine and measuring the coil output voltage while the engine is running. This method gives a more accurate picture of the coil's performance under real-world conditions.

Replacing a coil on a 125cc motorcycle

When and why should you replace this part?

There is no set lifespan for an ignition coil, but it is generally recommended to replace it every 100 to 000 kilometers, depending on usage and driving conditions. If you experience problems such as difficulty starting the engine, loss of power, or excessive fuel consumption, it is recommended to check and replace the ignition coil if necessary. Replacing the coil also helps maintain the efficiency of the ignition system, optimizes fuel consumption, and improves overall engine performance.

Steps for Coil Replacement

Replacing an ignition coil may seem complicated, but with the right instructions, it's within the reach of even the most amateur mechanic. Here are the steps to follow:

1. Disconnect your motorcycle's battery to avoid any risk of electrocution.
2. Disconnect the spark plugs and remove the old coil.
3. Install the new coil making sure it is securely seated.
4. Reconnect the spark plugs and battery.

All in all, it’s essential to take a proactive approach to maintaining your ignition coil. By following replacement recommendations and performing regular checks, you can ensure that your 125cc motorcycle is performing optimally and reliably.

Maintenance of a coil for a 125cc motorcycle

How to maintain and extend the life of this part?

Regular maintenance of the ignition coil is essential to ensure its performance and durability. Indeed, a well-maintained coil is more resistant and efficient, which translates intoar better efficiency of your 125cc motorcycle. Here are some tips to extend its life:

• Check the coil resistance regularly.
• Visually inspect the coil for signs of overheating or faulty insulation.
• Clean the coil with a clean, dry cloth to prevent dirt build-up.
• Make sure the coil housing is clean and well ventilated to avoid overheating.

Tips to prevent coil failures

To prevent ignition coil failure, it is important to keep the entire ignition system in good condition. This includes not only the ignition coil, but also the spark plugs, wiring, and electrical connections. Here are some tips:

• Replace spark plugs regularly.
• Check wiring and electrical connections for problems.
• Avoid exposing the coil to extreme temperatures or liquids.
• Keep your motorcycle's maintenance up to date to ensure the entire ignition system is functioning properly.

Conclusion: The importance of the coil for your 125cc two-wheeler

The ignition coil is a major part that ensures the proper functioning of your 125cc motorcycle. Its role is undeniable in the starting and performance of the engine. Choosing a high-quality coil, carrying out regular tests and ensuring its maintenance are essential steps to ensure an optimal driving experience. At 50 Factory, we offer a wide selection of 125cc motorcycle ignition coils, designed to meet different model requirements and needs. Investing in a premium coil is undoubtedly the best way to ensure the longevity and reliability of your two-wheeler for miles of riding pleasure.

Be sure to check out the other ignition parts categories to find all your items: spark plug wire and suppressors, CDI box, spark plug, ECU, stator and ignition rotor.