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Dirt Bike Discussions By Brand
Yamaha MX & Off-Road Dirt Bikes
Mystery YZ250 Problem
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[QUOTE="Crazymlh, post: 1077851, member: 58317"] It's been a while but I spotted this old thread I started a while back and thought I would finish it off with what turned out to be the real problem. Turns out it was the CDI. It had a vortex CDI on it and remember thinking "Oh It can't be the Vortex CDI ...they are too good to fail arn't they....?" But shure enough I actually tried a stock CDI when going through the fault finding process but only kicked the bike over by hand to see If the spark looked any different. Well after messing around with the jetting and what not I finally had the $hits well and trully and while sittiing on the bike trying to get it to rev I hit the CDI with my hand and ...... RING A DING DING DING then boog boog boog. Every time I hit it with my hand it would rev perfectly. So back into the shed swaped out the CDI with a 99 YZ250 CDI and have never had a problem since. [/QUOTE]
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Dirt Bike Discussions By Brand
Yamaha MX & Off-Road Dirt Bikes
Mystery YZ250 Problem
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