imported post
Bigeesteve wrote:
Since I have owned my Aspy I have had to keep it partially choked or it dies at idle and backfires during deceleration, I replaced the air cut-off valve but that did nothing. any help will be greatly appreciated.
Bigeesteve, if the engine runs acceptable at constant cruise & runs good at all but idle speeds & acel. your problem is probably in the pilot jet channels or slow air jets.
Before pulling those carbs you might try removing the pilot jet adjusting needles & spraying some carb cleaner in through the pilot jet needle channels. Be sure to count the number of turns to seat those needles BEFORE removing them so you can get them back where they are now.
In a lot of cases a good cleaning of the pilot jets will improve your idle & acceleration. If you do attempt to do those pilot jets with the carbs on the bike
don't use a high pressure air blow gun to blow them out as that could collapse the carb floats due to extreme high internal carb pressures.
When those pilot jets are clean, then do a pilot jet idle drop adjustment & re-balance the carbs.
Twisty