Hi, couldnt figure out this issue so this is my first experience with this fourm. Just finished building a 49cc chinese bike kit, and wont start. Pops a couple times here and there but nothing lasting. After riding for 50ft spark plug is totally blackened. Figured it was running to rich, even after adjusting c-clip to leanest setting, same issue. Spark works well agains frame, got good fuel in carb, testing with air filter off so gots air. Maybe im just doing something totally wrong, would appreciate any advice.
Try removing the spark plug with the fuel shut off and pedal around until the mixture coming from the open cylinder is dry to the touch. The engine crankcase may be full of fuel mixture in which case it has to come out before the engine can start.
I thought you said that you had spark earlier. Any way she is going and that is the main thing.
Does this mean it actually starts for a second and smoke comes out of the exhaust pipe and then it dies?
