Questions & Answers for: Pit over revving

i have a 125 pit bike and it ticks over fine but when you rev it it backfires does any body no how to fix it. i have done the timing, cleaned the carb, cheked the spark plug. any body no how to fix it

over revving 110 xsport 110 xport over revving need help have tryed all screws on carb cant seem to sort it out any one no

jingke carburetor choke off engine stops Engine will start no problem with the choke on and idle fine. When revved at half throttle in will be fine for 10 seconds or so then stop. The engine will not ...