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Discussion Starter · #1 ·
I have a 1987 yamaha moto 4 350 with gas , compression and spark but wont start. spark seems weak but when i take off the spark plug and boot the end of the coil wire produces bright blue spark to ground, i replaced boot and plug but still weak spark at plug ???? please help
 

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Discussion Starter · #3 ·
yes, weak spark was not the problem ended up being throttle cable stuck, causing it to flood, finally fired up and she was reving up full throttle, i guess the spark only looked weak to me, my dirt bike sparks much brighter than the moto 4. unseized the cable now shes running good.
 
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