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b04 Yamaha c90 timing issues

creativecustoms

New member
I currently have an '04 ya

I currently have an '04 yamaha c90 in my shop that will run fine in limp home mode but misses and pops back into the crank case in normal mode. I don't have a shop manual on this particular model and need to know what the idle timing specs should be ( this one is at 10 atdc at idle but still goes up with throttle) if you put it in limp home mode it locks timing to tdc and runs fine). Any one know the timing spec on this motor or had a similar problem with a cdi pack?
 
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