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Dirt Bike Discussions By Brand
Yamaha MX & Off-Road Dirt Bikes
YZ250F fouls plugs!
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[QUOTE="PowerStroke, post: 289177, member: 16854"] Double check all connections. Check the spark plug boot. I have had 3 out of 3 yamaha (wr250(2) yz80 all 2-strokes) go bad. This leads to a plugs always fouling. Even with jetting a little off the 4 strokers can usually keep the plugs alive. Also a bad batch of fuel maybe from last season can kill plugs. Get some new fuel. Also take off the plug boot and make sure it is screwed into the copper real good. Good luck.JR [/QUOTE]
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Dirt Bike Discussions By Brand
Yamaha MX & Off-Road Dirt Bikes
YZ250F fouls plugs!
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