hi to everyone. the problem is my thunder tiger pro 21 engine is leaking fuel or oil from the pull start and where the pull start cord hole is can anyone tell me what is causing this and how to cure it because my engine only idles for about 5 seconds and dies thanks

well for starters, you need to learn to tune, read ALL OF THIS http://www.*********.org/cars_eng-tuning.htm if your engine runs for 5 seconds then its running way too rich (most likely) running rich means there is alto fo extra fuel int he engine and its leaking out of the starter shaft