Hi, got a 2010 fatboy and she has been sitting well over 12 months drained. Removed the rocker covers to put in new pushrod covers. Tank was also drained and removed. Put all back together but when starting just back fires, smoke from exhaust and sometimes a bit of flames. But sounds like a shotgun. Checked compression and both on 200. Any ideas or help? Thnx.

Solved. New spark leads and wala!!! 

A good outcome, and another hurrah for check the simple (and cheap !) things first