QUOTE(machina @ Apr 14 2007, 08:38 PM)
runs rough at idle and part throttle, if i remove the idle jets and the mixture screws, do i want to blow it out down from the jet openings or up from the mixture openings?
i seem to remember that its better to do it one way in particular so you don't jam debris into the passages.
also, any advice for synching the carbs?
for the jet's, you wanna blow them out opposite to the gas flow. meaning, you blow into the little hole so the obstacle hopefully comes out the big hole ...
as for the passages, make sure the bowls are empty of gas, otherwise you'll have a nice mist of gas all over the engine and your face ...
on a empty carb, i had good success blowing out passages with carb-cleaner, not air.
syncing carbs is easy if you have the right tool. BUT, it's pretty much useless if you don't know when your valves were done last.
adjust valves first, then sync carbs. set carbs manually close to the disired settings, then use the sync tool to get them all to breath the same.
if one carb somehow lags behind the others, use the lowest one as your baseline and turn the others down to match ...
Andy