yesterday when i was putting my bike up i dropped it when i got off and oil started coming out of the vent on top of the engine. later that night i go out and fill it back up with oil and let it run for a few minuets, no oil came. out. today i get it out and it wouldnt start for nothing, when it did, it started loosing oil out of the vent again. i dont know what to do, im scared if i have to rebuild it. if anyone can help that would be really great.