What To Know
- Testing the ignition coil with a multimeter is a simple and effective way to determine if it is the source of your problems.
- Testing the ignition coil with a multimeter is a simple and effective way to diagnose ignition problems on your motorcycle.
- However, it is a good idea to test it if you are experiencing any of the symptoms of a faulty ignition coil.
A faulty ignition coil can lead to a variety of motorcycle problems, including difficulty starting, engine misfiring, and reduced power. Testing the ignition coil with a multimeter is a simple and effective way to determine if it is the source of your problems.
Tools and Materials
- Multimeter
- Spark plug wrench
- 10mm socket
- Ratchet
Safety Precautions
- Disconnect the negative battery terminal before starting any work.
- Wear eye protection and gloves.
- Allow the engine to cool down before touching any electrical components.
Testing the Primary Winding
1. Remove the spark plug. Use the spark plug wrench to remove the spark plug from the cylinder head.
2. Locate the ignition coil. The ignition coil is typically located on the side of the engine, near the spark plug.
3. Disconnect the ignition coil. Use the 10mm socket and ratchet to disconnect the electrical connector from the ignition coil.
4. Set the multimeter to ohms. Select the ohms setting on your multimeter.
5. Connect the multimeter probes to the primary terminals. Touch one probe to the positive terminal on the ignition coil and the other probe to the negative terminal.
6. Read the multimeter display. The multimeter should display a resistance reading of approximately 0.5 to 2 ohms. A reading of infinity indicates an open circuit, while a reading of zero ohms indicates a short circuit.
Testing the Secondary Winding
1. Reconnect the ignition coil. Plug the electrical connector back into the ignition coil.
2. Set the multimeter to volts AC. Select the volts AC setting on your multimeter.
3. Connect the multimeter probes to the spark plug wire and ground. Touch one probe to the spark plug wire and the other probe to a bare metal surface on the engine.
4. Crank the engine. Have someone crank the engine while you observe the multimeter display.
5. Read the multimeter display. The multimeter should display a voltage reading of approximately 10,000 to 20,000 volts. A reading of less than 10,000 volts indicates a weak ignition coil, while a reading of more than 20,000 volts indicates a faulty ignition coil.
Troubleshooting
- If the primary winding test fails, check the electrical connections and wiring for damage. Replace the ignition coil if necessary.
- If the secondary winding test fails, replace the ignition coil.
- If both tests pass, the ignition coil is likely not the source of your problems. Look for other potential causes, such as a faulty spark plug, ignition module, or wiring harness.
Conclusion
Testing the ignition coil with a multimeter is a simple and effective way to diagnose ignition problems on your motorcycle. By following the steps outlined above, you can quickly and easily determine if the ignition coil is the source of your problems and make the necessary repairs.
FAQ
Q: What are the symptoms of a faulty ignition coil?
A: Symptoms of a faulty ignition coil can include difficulty starting, engine misfiring, reduced power, and stalling.
Q: How often should I test my ignition coil?
A: It is generally not necessary to test your ignition coil on a regular basis. However, it is a good idea to test it if you are experiencing any of the symptoms of a faulty ignition coil.
Q: Can I replace the ignition coil myself?
A: Yes, you can replace the ignition coil yourself with basic tools and knowledge. However, it is important to follow the manufacturer’s instructions carefully and to take safety precautions.
