Honda FourTrax 87 Fourtrax Intermitent spark, CDI? June 22, 2015 I just bought this machine and they guy said it just started doing it. Sometimes it wont start but if you tap this box under the front rack it will usually start. Is this the CDI? If so do i need one exactly for this year and machine? Thanks! Share this:Click to share on Twitter (Opens in new window)Click to share on Facebook (Opens in new window) Related