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Bad coil? Bad cdi? Help!


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From how it was explained, it sounded like either a weak spark issue or reeds.  Weak spark only because it sounds like "spark snuffing" or blowing out the spark kernel during heavy breathing.  Spark plug gap, grounds, connections, etc, any of those could cause it.  

 

Reeds can also be problematic though they typically show up at lower rpm too.  

 

Certainly not the park brake rev limit, as this kicks in just above idle and you indicate you were riding it.  

 

 

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From how it was explained, it sounded like either a weak spark issue or reeds.  Weak spark only because it sounds like "spark snuffing" or blowing out the spark kernel during heavy breathing.  Spark plug gap, grounds, connections, etc, any of those could cause it.  
 
Reeds can also be problematic though they typically show up at lower rpm too.  
 
Certainly not the park brake rev limit, as this kicks in just above idle and you indicate you were riding it.  
 
 
The wires to the coil were on backwards. a friend was helping me and changed and reversed the orange and black wires. I changed them around and it runs like a scalded dog now.

Sent from my LG-H918 using Tapatalk

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4 hours ago, Bamabansheeboy said:

The wires to the coil were on backwards. emoji17.png a friend was helping me and changed and reversed the orange and black wires. I changed them around and it runs like a scalded dog now.

Sent from my LG-H918 using Tapatalk
 

That's odd, as an OEM will work hooked up either way.

Good to know though.

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