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Dirt Bike Discussions By Brand
Yamaha MX & Off-Road Dirt Bikes
2003 YZ250 jetting
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[QUOTE="intmach, post: 670284, member: 28322"] O.k. I have an 02 yz250 and my friend has a 01. Both bikes at 1 point this summer fouled plugs all the time.. I changed both bikes to a 48 pilot and now the only bike that fouls is the 01. everytime he starts it he has a plug in hand. It's that bad.. his rings are need of replacment and we are doing it next weeknd. I'm thinking that maybe part of his problem but none the less i am going to put a 45 in his if the problem continues. I will let you guys know what i find out.. I just think Yamaha sent these out really fat on the bottom. What are the kx 250's running as a pilot from the factory.. We are using the same carbs.. Paul [/QUOTE]
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Dirt Bike Discussions By Brand
Yamaha MX & Off-Road Dirt Bikes
2003 YZ250 jetting
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