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Dirt Bike Discussions By Brand
Yamaha MX & Off-Road Dirt Bikes
2003 YZ450F "ColdBlooded Issue"
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[QUOTE="ashzeigler, post: 1392619, member: 119820"] Well guys me and my friend messed with my bike. We moved the Main Jet down one, messed with the pilot screw in every aspect and it wouldn't run right. Then we ran to the main jet up one (1 above normal) and then messed with the pilot screw in every aspect and it ran like crap. Lastly we returned the main jet to its stock settings and messed with it in every aspect and it STILL backfires like there is no tomorrow. I do not know what to do so hopefully one of you guys will have an idea. Im going to go up to my local shop tomorrow and hopefully they can give me some pretty detailed ideas. Anyway, thanks for the help guys, I guess my bike is just being dumb. Stupid Full System FMF Titanium4 Exhaust... Lol. [/QUOTE]
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Dirt Bike Discussions By Brand
Yamaha MX & Off-Road Dirt Bikes
2003 YZ450F "ColdBlooded Issue"
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