i know when i was working at my old job , had a real honda 15hp? i think on a compressor for air , in summer it almost blew the muffler off !! but winter seemed ok , anything over maybe 28c and it sut down with a bang . ok but not at face level ! and took maybe 1 1/2 seconds , just enough time to sneak one out while closing the door , scared the #%!* out of anyone was so loud ,
changed the idle a little and richened it a tad and seemed better . then they seviced it and back to backfiring it went
