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Yamaha MX & Off-Road Dirt Bikes
rmz 450 2007 problems
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[QUOTE="RMZ450FIRST4T, post: 1427840, member: 123882"] Hi I'm new to this forum(as a registered member, been reading some of the threads). I'm sorry to go right to my problems but I'm desperate! I bought a RMZ450 2007 that has been standing for 2 years(last time started December last year), I'm waiting for new backweel and other ods and ends. I got the motor started and it was backfiring alot, header glowing bright red, almost white hot after only a couple of minutes. All simtoms point to it running lean exept for the fact that there is black smoke coming out of the exaust intermittently when revving it up. I know some theory about thumper engines but am no mechanic and don't want to open the motor if I don't have to. I think I also have to mention that I have a custom made exaust(seems like good quality but don't know about design). Can someone please help and give me some pointers as to what might be wrong(already cleaned carb). [/QUOTE]
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Dirt Bike Discussions By Brand
Yamaha MX & Off-Road Dirt Bikes
rmz 450 2007 problems
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