Question about 2002 Yamaha TT-R 250
Hey i have a ttr250 2000 model i had a very similar problem, it was misfiring and dropping out at high revs. i striped the carb cleaned everything out adjusted jet pins, oils, air/ fuel screw changed the spark plug nothing worked. in the end i got a can of carbi cleaner and sprayed it while the engine was running into the intake after alot of smoke coming out the exhaust. hey presto suddenly my bike works and revs fine. with a little bit of tuning good as new. so might be worth a try. I think it was from over oiling the air filter and the oil messing with the valves. hope this helps
Posted on Jun 10, 2011
When the cam chain stretches beyond adjustment the cam on the exhaust side can skip over a tooth upon stalling the bike will still run but will have no power to speak of and if you keep playing and trying to start it it will skip another tooth then wont run if you keep playin it can eventually have the piston hit the valves and catastrophy .new cam chain .set valve timing correctely.fixed .no tuning carb or spark problems .
Posted on Jan 08, 2010
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Posted on Jan 02, 2017
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