ATV General Discussion Honda rancher 420 2010 smoking April 16, 2015 My wheeler has been smoking recently it was so bad before I put my new hmf pipe on but now it’s just a cloud of blue smoke when I start it up. It last for about 5 min then stops. Any ideas on what it might be? Share this:Click to share on Twitter (Opens in new window)Click to share on Facebook (Opens in new window) Related