i was ridin this dirt bike and i went to give it gas and it was about half throttle and smoke went EVERYWERE i lost power but it starts but runs like **** and smokes like a fraight train and i just put a new head gasket on it and the issue is still going on??? I NEED HELP WITH THIS

 

Start it up and open the radiator cap. If you see bubbles its a good bet
the head gasket went.