1. Check the ignition coil: Disconnect the ignition coil from the spark plug wire and measure the resistance between the primary and secondary windings with a multimeter. The primary winding should read between 0.5 and 2.0 ohms, and the secondary winding should read between 2000 and 8000 ohms. If the readings are out of specification, replace the ignition coil.
2. Check the spark plug: Remove the spark plug from the cylinder head and inspect the electrode for wear or damage. The electrode should be sharp and clean, and the gap should be set to the manufacturer's specification (typically 0.020 to 0.024 inches). If the spark plug is worn or damaged, replace it.
3. Check the spark plug wire: Inspect the spark plug wire for damage or corrosion. The spark plug wire should be in good condition and connected securely to the ignition coil and spark plug. If the spark plug wire is damaged, replace it.
4. Check the battery: Make sure the battery is fully charged and that the connections are clean and tight. If the battery is weak or the connections are loose, the ignition system may not receive enough power to generate a spark.
5. Check the starter relay: The starter relay is responsible for sending power from the battery to the ignition coil. If the starter relay is faulty, it may not be able to supply enough power to the ignition coil to generate a spark. Check the starter relay for continuity and replace it if necessary.
6. Check the kill switch: The kill switch is a safety device that shuts off the ignition when it is activated. Make sure the kill switch is turned off, or the ignition system will not be able to generate a spark.
If you have checked all of the above and you still do not have a spark, you may need to take your motorcycle to a qualified mechanic for further diagnosis.
