When i use the kick start to start my Piaggio Typhoon 125 engine the compression in solid some times it will go down ok but sometimes it will be solid is there something wrong or isit normal? also theres a little breather hole near my inlet and sometimes it will back fire i cant really explain is but it sounds like a little bang what could this be? thanks :grin:
That breather hole needs covering. it's used as a vacuum basically but if its not sealed then its sucking in too much air.
