12-27-2004, 08:05 PM
i have a 1988 indy 650 ---and i want to make sure that it isnt running lean and the carbs are insync ---i understand the screws on the side are the idle and the flat headed ones are the air screws ---could someone help me with setting them up so im not running lean and still have power yet keeping the reliability ---im sorta broke so any non spending help would be preferd thanks
12-27-2004, 08:15 PM
also if someone could tell me the right way to turn them----ie. if u turn the air screw clockwise/counterclockwise it will do?
same with the idle screw --so on and so on thanks very much for any help
12-27-2004, 10:53 PM
I would start with one turn out from lightly seated, and adjust for best idle (even if it's high), then bring down the idle with the idle adjustment on the side if necessary. Air screws control air, so out is more air (less fuel), in is less air (more fuel). If it is idling smoothly, it is probably fine. The idle circuit only affects operation from idle to about 1/4 throttle and seldom is a cause for a lean burn, unless something gets really plugged.
If you have no change when you move the screws, the pilot jets may be clogged; a good cleaning never hurts.
Hope that helps