davey 123 Posted October 4, 2010 Share Posted October 4, 2010 Hi All i have a missfire over 7000 rpm on my tzr-r 125 belgrada, i have noticed that when i open the throttle all the way it missfires but if i open it very slowly as it accelerates it doesnt seem as bad although it still jerks above 8000rpm , it doesnt do it in the first 3 gears. I have no real history on this bike, so if anyone out there knows what the correct standard jet sizes are it would be a good starting point, and or any tips as to carb and air mixture setting . it to me seems its either getting to much fuel and air or not enough. thanks Dave Link to comment Share on other sites More sharing options...
Guest gary evans Posted October 11, 2010 Share Posted October 11, 2010 Hi All i have a missfire over 7000 rpm on my tzr-r 125 belgrada, i have noticed that when i open the throttle all the way it missfires but if i open it very slowly as it accelerates it doesnt seem as bad although it still jerks above 8000rpm , it doesnt do it in the first 3 gears. I have no real history on this bike, so if anyone out there knows what the correct standard jet sizes are it would be a good starting point, and or any tips as to carb and air mixture setting . it to me seems its either getting to much fuel and air or not enough. thanks Dave hi 180 main jet your air mixture should be 1 and 3 quarters out and your needle jet should be 4th from the top and float setting should be 21mm give it a good clean before putting it back together gary Link to comment Share on other sites More sharing options...
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