davross Posted October 12, 2007 Report Share Posted October 12, 2007 Hi, I hope some one can point me in the right direction! I have a Ty250 pinky and it has a power problem. It runs spot on at the bottom end but sounds like its missing when you rev it up and it has no power, anything above half throttle and it dies a death. I have taken the exhaust off to make sure its not carboned up and it does not look too bad, cleaned the airfilter and changed the sparkplug but its still the same. Can someone please tell me what to try now?? Thanks very much, Dave. Quote Link to comment Share on other sites More sharing options...
yamahaty250xox Posted October 12, 2007 Report Share Posted October 12, 2007 make sure the plug is a resistor type plug. mine run like a dog with a normal in. now dont go on it from me but aparently the stator is gone. i dont know what yours is like but mine is mega splutury. also look if you have a power back box or a smooth one Quote Link to comment Share on other sites More sharing options...
davross Posted October 13, 2007 Author Report Share Posted October 13, 2007 make sure the plug is a resistor type plug. mine run like a dog with a normal in.now dont go on it from me but aparently the stator is gone. i dont know what yours is like but mine is mega splutury. also look if you have a power back box or a smooth one I put a NGK BR6ES plug in it,It's what was in. Im assuming the R stands for resistor??. How do i tell the difference between the back boxes? and what difference do they make? Thanks very much for the reply, Sorry for all the Questions. Quote Link to comment Share on other sites More sharing options...
kevin j Posted October 15, 2007 Report Share Posted October 15, 2007 is it running our of fuel? check lines, petcock, filter, carb cleaning, etc. Quote Link to comment Share on other sites More sharing options...
davross Posted October 15, 2007 Author Report Share Posted October 15, 2007 Right good call, i'll will check all those tommorrow. Cheers mate. Quote Link to comment Share on other sites More sharing options...
davross Posted November 7, 2007 Author Report Share Posted November 7, 2007 Finaly figured it out! It was a blocked pilot jet, the previous owner had wildly adjusted the carb to try and compensate. So thats why it was running like a bag of *****. I cant wait to get out and try it. Quote Link to comment Share on other sites More sharing options...
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