Hi all,
Ive been working on my 2006 beta rev 3 trails bike for days now trying to find the cause for an issue im having.
Bike runs and idles ok although the exhaust does pop a little but im unsure if this is normal with it being a two stroke.
The issue im having is that when i rev it up even on the stand and in neutral, the bike takes way longer than expected to return back down to idle. Ive chased a whole host of potential problems and I cant seem to find any faults. ive checked the airbox for cracks or holes and found none, ive checked the airbox to carb rubber boot and found no issues there and then ive taken the carb apart and cleaned out all the ports by spraying carb cleaner down them and cleaner comes out of the ports(at the other end). Ive checked and resealed the carb to engine rubber hard boot too and that seems fine.
throttle cable seems fine although the snap back at the carb (mikuni) isnt as sharp as i thought it would be but it does shut quickly.
The research i have done suggests air is coming in somewhere but i cant see where?or how?
Does anyone have any suggestions to what it could be?