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Discussion Starter · #1 ·
Hi,
I'm new here...
And working on my 86 TRX 125,
when i switch it on with the batt. charged and pull the cord my volt meter reads juice to the spark plug, but the plug is not sparking, i just gapped it so any ideas?
 

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You should not be able to "read juice to the spark plug". It should be a 35,000 to 45,000 volt pulse about 1/1000 of a second duration. You need to use an oscilloscope to see the pulse and measure the voltage. The fact that you read something means the system has some functional parts. Are you using a new plug to test for spark?
 
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