I have the same bike, same year. First I'd say, is it really backfiring (small explosions in the tailpipes) or more "popping" when you let off the gas? I think backfires might be more common on giving an engine gas, not letting up...
Mine was popping (which I originally referred to as 'backfiring', as well), and the diagnoses was that the engine was running lean, and when I had the carbs cleaned, it went away completely.
running lean can cause your 400ex to backfire ..if it backfires on deceleration its lean ...if it pops on acceleration its running rich.====carb issues
what doesit mean when you start a 1984 200x atc and the motor is racing
It is on the throttle body just below the throttle linkage.
Twist the Throttle - 2009 Honda 1-1 was released on: USA: 2009
REPLACE THE THROTTLE CABLES
on the back of the throttle body
Twist the Throttle - 2009 Honda 1-1 is rated/received certificates of: Australia:G
he rides a custom made Honda (for fun) and a (#46) custom made Honda (competitions)
The Throttle Position Sensor is located on the throttle body
In the back of the Throttle Body right side for 94 accord DX.
the throttle sensor function is to stabilize the ref of the car engine
Under the throttle body