Honda FourTrax trx 350 1986 back fire December 29, 2015 Hi i got a problem with my trx 350 that is impossible to start and constantly backfiring. Timing is good and carburator seem not to shoot too much gas. Does anybody know what could be the problem? Thx! Share this:Click to share on Twitter (Opens in new window)Click to share on Facebook (Opens in new window) Related