waxamilion

whats up all!? I am a brand new owner of a yamaha xj650 maxim and am having some issues that hopefully some of you guys can help me out with... 1. I'll turn on the engine but sometimes as I put the bike in 1st gear, then theres a lil jolt to the bike....?? 2. as soon as I try to give it some throttle into first..the bike dies.....once in awhile theres a lil puff of black smoke that comes out of the carb holder if im revving.....?? thanks for whatever input you might have...