ive had the bike for about two weeks , n been ridding it like every other 3 days just around the block since its my first bike , im pretty cofteble with it now , been taking it slow but also been testing its nuts abit lol , but any who the bike has 4000 miles , n just today it gave me a problem , i try to accel an the motor sounds loud but the bike wont accel what could b causing this the bike was fine b4 that happend if somebody had a familier problem plz let me know what it could b