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post #1 of (permalink) Old 05-02-2005, 06:57 PM
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no spark

I have a 1985 yamaha moto 4 80cc.My problem is I get an intermittent spark.I changed all the inline connecters and the ignition switch.I also tightened all the grounding screws I could find & cleaned all the plug connectors and it still didn,t help.If I bounce the bike around I will get spark.then when I ride it and hit a bump it looses power then eventually stalls and I have no spark again.Is there any way to find out if its the ignition module,coil,trigger,or just a short.any help would be appreciated.
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