Remove your spark plug. Connect the plug wire back onto the plug, rest the plug on the engine so the electrode ( the little bent metal tab on the threaded end of the plug) is touching a metallic part of the engine. Have someone turn the ignition key to turn over the engine. Now you should see the spark arcing. If the spark is orange it's weak. If it's blue then it's strong. Make sure the sparkplug is "gapped" correctly.
The stock plugs that come with these buggys are garbage. Replace with an NGK or Champion plug. If you replace the coil buy an orange performance type.
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