i got a 2006 ltr450 with a cherry bomb and lid off air box. the light doesn't turn on right away. first all three lights turn on then all turn off but the neutral light. the quad has a super hard time starting. it turns over. then the light turns on and then the quad back fires a couple times then i eventually get it running but starts to give off black smoke when revving it. after its warmed up it runs fine and starts right up. any help? i was thinking the vavles but why would the FI light turn on for the valves?