Question about 2003 Yamaha YZ 125

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Weak spark I have a similar problem, on my 1994 yamaha yz 125 2 stroke. the spark is there it comes of every time i kick start it, but just that it is so weak. i took of the gas tank looked underneath and realized that the igniton coil was a little messed up so i fixed that now, the spark is strong but goes off every like 2-3 engine rotations...

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If there was a probem with the coil the extra loading from the short circuit may have caused a problem with the trigger coil for the main coil. I don not have the spec but this value can be check with an ohm meter. Let me know how you make out...

Posted on Sep 25, 2009


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