Honda Shadow Forums banner

black smoke

  1. 88' Shadow 600 black smoke and fire out of one exhaust pipe

    Technical Discussion
    Issue: I have one tailpipe (back engine block) putting up black smoke and fire w/ throttle. Bucs hard at 1/4-1/2 throttle. I have played with the mixture screws all the way from 1/2 turn to 3 turns 1/2 turn = pings at idle, afterfire on decel, bucks hard... all symptoms of lean. 1 - 3 turns = a...