My 2004 Lifan C25 250 V-Twin has no spark. It has 10,000 miles on it.  On extremely rare occasions when you try to start it, it will run for about 3 to 8 seconds and go dead.  I discovered if you hold the start button in like you were going to start it and turn the key on it will fire up and run for about 3 seconds.  But basically there is not spark at all 100% of the time.  The plugs are new and there is no spark.  Is the CDI bad? 

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