My 2001 883 ran great last week, then sat for 5 days and now it's really really hard to start, choke makes practically no difference. Once I finally get it running I start to ride and it dies, or lasts about about a minute but I can barely make it to 2nd gear. It backfires really hard also. Someone told me it might be in the timing.. the piece behind the 5 speed emblem on the side cover.. I'm not sure I've only had bike for a couple months.