Fastfreddy

Could the idle air sensor be bad. Someone on another forum said unplug it and if it doesn’t act any different that it could be bad so I unplugged it and it ran the same. 2007 rancher 420 trx

The sensor is plugged in yes it acts the same way hot or cold. No mods all stock. And no valves have not been adjusted. 

Hey guys  I have a Honda 420 rancher starts right up runs fine idles fine. if you ease on the throttle it will Rev fine.  but if you hammer it it bogs and backfires I’ve change the fuel pump fuel filter same thing nothing changed oh sorry I also change the spark plug. Can someone help