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Yamaha Raptor 350 & Warrior Forum

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Joined
Mar 17, 2013
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Location
Evans Mills, New York
I have a 1987 warrior 350... Fresh rebuild with hot rods stroker +4mm crank, hot cams stage two, Vito's trimming key, vertex piston, minkuni vm-38mm carb brand new and I just installed a UFO... Has 160 main jet 25 pilot and a 3.3 needle seat. With the needle on the middle clip there is no airbox just a k&n air filter... I've tried every combination of jetting I can think of and nothing ever changes... It falls on its face when it starts getting higher in rpms... Today I switched to a 16/38 gearing and it wast bad until it started to warm up then back to fallin on its face wide open throttle... I'm thinkig electrical but have no idea what is causing it the CDI? Or the stator? or the coil?... This has me and a good friend of mine whose a atv mechanic both stumped anybody have any idea what my problem is??!!!
 
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